May

8

Simon Mantell

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Simon Mantell (born on April 24, 1984 in Bridgwater, Somerset) is an English field hockey forward, who made his international senior debut for the national squad on November 9, 2005 versus Ireland at Beeston. He is nicknamed Logger, and played club hockey for Firebrands.

Currently Mantell is playing for Reading H.C.. He was a member of the English squad that finished fifth at the 2006 Men’s Hockey World Cup in Mönchengladbach. His older brother Richard was also on that side.

As well as winning plaudits on the pitch, Simon has been winning fans off the pitch as well. His chiselled features and muscular physique have seen him rise to ‘Uber Babe’ status in late 2006. Simon also has an above average sized phallace for a man of his stature (in both length and girth).

May

8

Dade County Resistance

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Dade County Resistance was a South Carolina power-pop/punk rock band started by former members of Guyana Punch Line, Self and Insult To Injury.

Debut album, “Every Last Chance” was released by trend is dead! records in 2002. The record was critically acclaimed, and the band given opening slots supporting bands like The Ataris, Snapcase, J Church, Hot Water Music and more. Just when the band seemed poised to take over the world, Dade County Resistance exploded, like every good band should.

May

8

Flowers for Rhino

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“Flowers for Rhino” is a critically acclaimed Spider-Man story by Peter Milligan and Duncan Fegredo. Published in 2001, it is a pastiche of the classic Science Fiction story “Flowers for Algernon.” Rhino, a brutish and dim-witted enemy of Spider-Man, undergoes a brain operation that turns him into a super-genius, but has the unfortunate side-effect of eroding his ability to experience joy and delight. The woman he increased his intelligence to impress leaves him, claiming he no longer seems human. A chimpanzee who had the same operation has committed suicide out of boredom and despair, and Rhino sees that he will follow that unhappy road. He saves himself by ordering the surgeons to restore him to his former state, and even make him a bit stupider than before. Soon he is restored to his former stupid but happy self, delightedly crashing through walls. The moral of the story is that intelligence is good, but joie de vivre is better. “Flowers for Rhino” appeared in Spider-Man’s Tangled Web #5-6.

May

8

Heisenberg model (classical)

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The Heisenberg model is the <math>n = 3</math> case of the n-vector model, one of the models used in statistical physics to model ferromagnetism, and other phenomena.

It can be formulated as follows: take a d-dimensional lattice, and a set of spins of the unit length

<math>\vec{s}_i \in \mathbb{R}^3, |\vec{s}_i|=1</math>,

each one placed on a lattice node.

The model is defined through the following Hamiltonian:

<math>\mathcal{H} = -\sum_{i,j} \mathcal{J}_{ij} \vec{s}_i \cdot \vec{s}_j</math>

with

<math> \mathcal{J}_{ij} = \begin{cases} J & \mbox{if }i, j\mbox{ are neighbors} \\ 0 & \mbox{else.}\end{cases}</math>

a coupling between spins.

The general mathematical formalism used to describe and solve the Heisenberg model and certain generalizations is developed in the article on the Potts model.


See also

  • Heisenberg model (quantum)
  • Ising model
  • XY model


External links

  • Absence of Ferromagnetism or Antiferromagnetism in One- or Two-Dimensional Isotropic Heisenberg Models
  • The Heisenberg Model - a Bibliography

May

7

Sympetaly

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Sympetaly is the condition of some flowers in which the petals are fused together (sym- together). in some of these flowers, like with Gentiana asclepiadea are only partially fused at the base, but in other flowers, such as Gentiana andrewsii, they are fully fused and never open. Flowers with sympately may be self-pollinated, while others may have small holes and be pollinated like regular plants.

May

7

Stylophorum diphyllum

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The poppywort (also known as stylophorum, celandine poppy, wood poppy, or yellow poppy) is a member of the poppy family native to eastern North America, with yellow-orange flowers. The flowers are 4 showy sepals that are petal like, with many stamens in the middle. Plants grow about 1.5 feet tall, with pinnatifid shaped leaves. The flowers are produced in umbels that can have one to a few flowers each, the umbels terminate the stems and after blooming a pod like fruit is produced that hangs down under the foliage. When the seeds are ripe in mid summer, the pods split open along four valves. The plants have a yellow-orange sap that can stain hands. Plants are relatively long lived and readily self seed under garden conditions, were they are grown under part shade.


References

May

7

Brother Down

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For the song, see Brother Down (song)

Brother Down is the first studio album by Sam Roberts, a Canadian rock musician and singer/songwriter. Although some of the songs on the debut appear on later albums, Brother Down did not have a lot of success when it was originally released.

A rerecorded version of the album’s title track, which appeared on the later release The Inhuman Condition, was Roberts’ breakthrough hit single in Canada.


Track listing

All songs written by Sam Roberts

  1. “Step Inside”
  2. “Climb Over Me”
  3. “Brother Down”
  4. “For The Ladies”
  5. “Got Soul But No Money”
  6. “(Baby You) Got Me On The Run”
  7. “Embrasse-Moi”
  8. “Durban Poison”
  9. “Magic On My Mind”
  10. “Sunny Lemon Tina”
  11. “Canadian Dream”
  12. “You Would Never Make Me Cry Now”

May

7

Thomas Wood

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Thomas Wood can refer to:

  • E. Thomas Wood, an American journalist and author
  • Thomas Barlow Wood, Professor of Agriculture at Cambridge University
  • Thomas Charles Wood, Canadian war artist
  • Thomas Harold Wood, Canadian politician
  • Thomas Mills Wood, American film and television character actor, aka Tom Wood
  • Thomas Wood (bishop), an Anglican bishop
  • Thomas Wood (composer), an English composer and author.
  • Thomas Wood (politician), a British MP
  • Thomas Wood (priest), a Roman Catholic chaplain to Queen Mary of England


See also

  • Tom Wood disambiguation page

May

7

Matt Vogel

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Matthew J Vogel II (born October 6, 1970 in Kansas City, Kansas) has been a Muppet performer for the Jim Henson Company since the 1990s. On Sesame Street, Vogel served as the assistant puppeteer for Ernie, performing either one or both hands while Steve Whitmire performed the head and vocal. Eventually, Vogel’s ability to mimic the sound and performance of Carroll Spinney’s Big Bird was put to use. As of 2006, Vogel’s primary performances as Big Bird are the “Journey to Ernie” segments. Coincidentally, “vogel” is the Dutch word for “bird”.

In addition, Vogel has been known to provide voices for Muppet characters originally performed by Richard Hunt, such as Janice and Scooter.


External links

  • Mighty Weaklings Official Site

May

7

Van Wert

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Van Wert may refer to:


Geographical

  • Van Wert, Iowa
  • Lima-Van Wert-Wapakoneta, OH Combined Statistical Area
  • Van Wert County, Ohio
  • Van Wert, Ohio


Biographical

  • Isaac Van Wert (also known as Isaac Van Wart)


Event-related

  • Van Wert and Putnam County 2001 Tornadoes


Other

  • Cartersville and Van Wert Railroad

May

7

Fragaria × vescana

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Fragaria × vescana is a hybrid strawberry cultivar that was created in an effort to combine the best traits of the Garden Strawberry (Fragaria x ananassa), which has large berries and vigorous plants, with the Woodland Strawberry (Fragaria vesca), which has an exquisite flavour, but small berries.

This cross cannot take place naturally. Fragaria x ananassa has eight sets of chromosomes whereas Fragaria vesca has only two sets. Repeated attempts to cross these resulted in sterile offspring.

Researchers treated tissue from a Fragaria vesca plant with colchicine to create a mutant plant with four sets of chromosomes. This mutant was then crossed with a Fragaria x ananassa plant, and vigorous fertile offspring were obtained. The offspring were found to be decaploid, (having ten sets of chromosomes).

Fragaria × vescana is not yet commercially important, but remains under development. While the plants are vigorous like their F. × ananassa parents, and the berries have the excellent flavour of the F. vesca parents, the berries are still quite small.


F. x vescana cultivars

The following decaploid strawberries were released by the Swedish breeding program at Balsgård:

Annelie (1977)

Sara (1988) — Annelie x [(Sparkle x F. vesca 4x) open pollinated]

Rebecka (1998) — (Fern x F. vesca 4x) x F. x ananassa F861502

German F. x vescana cultivars:

Spadeka (1990?)

Florika (1990) — (Sparkle x F. vesca semperflorens) x Klettererdebeere H.


References

Bauer, A. 1993. Progress in breeding decaploid Fragaria × vescana. Acta Hort. (ISHS) 348: 60-64

May

6

List of Minnesota wild flowers

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The List of Minnesota wild flowers lists all of the wild flowers native to Minnesota. Common names follow Minnesota DNR conventions. Where several species of plants share part of a common name, they have been grouped together until that name; this is for indexing purposes and does not always indicate a taxonomic relationship.


A

  • Alexanders

    • Golden alexanders Zizia aurea
    • Heart-leaved alexanders Zizia aptera
  • Anemone
    • Canada anemone Anemone canadensis
    • Cut-leaved anemone Anemone multifida var. multifida
    • Haller’s anemone Anemone halleri
    • Wood anemone Anemone quinquefolia
  • Asters
    • Aromatic aster Aster oblongifolius
    • Awl aster Aster pilosus var. pilosus
    • Bog aster Aster borealis
    • Crooked aster Aster prenanthoides
    • Drummond’s aster Aster drummondii
    • Eastern panicled aster Aster lanceolatus
    • Flat-topped aster Aster pubentior
    • Flat-topped aster Aster umbellatus
    • Heath aster Aster ericoides
    • Heart-leaved aster Aster cordifolius
    • Large-leaved aster Aster macrophyllus
    • Lindley’s aster Aster ciliolatus
    • Long aster Aster x longulus
    • Modest aster Aster modestus
    • New England aster Aster novae-angliae
    • New England aster and Heath aster hybrid Aster x amethystinus
    • Ontario aster Aster ontarionis
    • Red-stemmed aster Aster firmus
    • Red-stemmed aster Aster puniceus
    • Short’s aster Aster shortii (threatened)
    • Sickle-shaped aster Aster falcatus commutatus
    • Side-flowering aster Aster lateriflorus
    • Silky aster Aster sericeus
    • Skyblue aster Aster oolentangiensis
    • Smooth aster Aster laevis
    • Tail-leaved aster Aster sagittifolius
    • Veiny lined aster Aster praealtus
    • Western panicled aster Aster hesperius
  • Autumn sneezeweed Helenium autumnale


B

  • Baneberry

    • Red baneberry Actaea rubra
    • White baneberry Actaea pachypoda
  • Beard-tongues
    • Large-flowered beard tongue Penstemon grandiflorus
    • Pale beard tongue Penstemon pallidus
    • Slender beard tongue Penstemon gracilis
    • White beard tongue Penstemon albidus
  • Bellwort
    • Large-flowered bellwort Uvularia grandiflora
    • Pale bellwort Uvularia sessilifolia
  • Black-eyed Susan Rudbeckia hirta
  • Blanketflower Gaillardia aristata
  • Blazing stars
    • Cylindric blazing star Liatris cylindracea
    • Dotted blazing star Liatris punctata
    • Great blazing star Liatris pycnostachya
    • Northern plains blazing star Liatris ligulistylis
    • Rough blazing star Liatris aspera
  • Bloodroot Sanguinaria canadensis
  • Bluebead lily Clintonia borealis
  • Blueberry
    • Lowbush blueberry Vaccinium angustifolium
    • Velvet-leaved blueberry Vaccinium myrtilloides
  • Blue-eyed grasses
    • Field blue-eyed grass Sisyrinchium campestre
    • Mountain blue-eyed grass Sisyrinchium montanum montanum
    • Narrowleaf blue-eyed grass Sisyrinchium angustifolium
    • Pointed-petal blue-eyed grass Sisyrinchium mucronatum
  • Blue flag
    • Northern blue flag Iris versicolor
    • Southern blue flag Iris virginica var. shrevei
  • Bunchberry Cornus canadensis
  • Butterflyweed Asclepias tuberosa var. interior


C

  • Canada mayflower Maianthemum canadense
  • Cinquefoil
    • Bushy cinquefoil Potentilla paradoxa
    • Marsh cinquefoil Potentilla palustris
    • Pennsylvania cinquefoil Potentilla pensylvanica
    • Rough cinquefoil Potentilla norvegica
    • Shrubby cinquefoil Potentilla fruticosa
    • Slender cinquefoil Potentilla flabelliformis
    • Spreading cinquefoil Potentilla effusa
    • Tall cinquefoil Potentilla arguta
  • Columbine Aquilegia canadensis
  • Coneflowers
    • Gray-headed coneflower Ratibida pinnata
    • Narrow-leaved purple coneflower Echinacea pallida var. angustifolia
    • Prairie coneflower Ratibida columnifera
    • Sweet coneflower Rudbeckia subtomentosa
    • Tall coneflower Rudbeckia laciniata var. laciniata
    • Three-leaved coneflower Rudbeckia triloba var. triloba (special concern)
  • Coralroot
    • Autumn coralroot Corallorhiza odontorhiza var. odontorhiza
    • Early coralroot Corallorhiza trifida
    • Spotted coralroot Corallorhiza maculata
    • Striped coralroot Corallorhiza striata var. striata
  • Cottongrass
    • Chamisso’s cottongrass Eriophorum chamissonis
    • Delicate cottongrass Eriophorum tenellum
    • Green-keeled cottongrass Eriophorum viridicarinatum
    • Slender cottongrass Eriophorum gracile
    • Tall cottongrass Eriophorum polystachion
    • Tawny cottongrass Eriophorum virginicum
    • Tussock cottongrass Eriophorum vaginatum var. spissum
  • Cow parsnip Heracleum maximum
  • Culver’s root Veronicastrum virginicum


D

  • Dogbane

    • Clasping dogbane Apocynum sibiricum
    • Hemp dogbane, also known as American Hemp, Apocynum cannabinum
    • Intermediate dogbane Apocynum x floribundum
    • Spreading dogbane Apocynum androsaemifolium


E

  • Evening Primroses

    • Common evening primrose Oenothera biennis
    • Cleland’s evening primrose Oenothera clelandii
    • Cut-leaved evening primrose Oenothera laciniata
    • Northern evening primrose Oenothera parviflora
    • Nuttall’s evening primrose Oenothera nuttallii
    • Perennial evening primrose Oenothera perennis
    • Rhombic evening primrose Oenothera rhombipetala
    • Toothed evening primrose Calylophus serrulatus


F

  • False Solomon’s Seal

    • Common false Solomon’s seal Smilacina racemosa
    • Starry false Solomon’s seal Smilacina stellata
    • Three-leaved false Solomon’s seal Smilacina trifolia
  • Fireweed Epilobium angustifolium
  • Flodman’s thistle Cirsium flodmanii


G

  • Gaywings Polygala paucifolia
  • Gentians
    • Billington’s gentian Gentiana x billingtonii
    • Bottle gentian Gentiana andrewsii
    • Downy gentian Gentiana puberulenta
    • Great Lakes gentian Gentiana rubricaulis
    • Greater fringed gentian Gentianopsis crinita
    • Horse gentian Triosteum aurantiacum
    • Lesser fringed gentian Gentianopsis procera
    • Northern gentian Gentiana affinis (special concern)
    • Spurred gentian Halenia deflexa
    • Stiff gentian Gentianella quinquefolia var. occidentalis
    • Yellowish gentian Gentiana flavida
  • Giant Hyssop
    • Blue giant hyssop Agastache foeniculum
    • Purple giant hyssop Agastache scrophulariaefolia
    • Yellow giant hyssop Agastache nepetoides
  • Goldenrod
    • Canada goldenrod Solidago canadensis
    • Early goldenrod Solidago juncea
    • Giant goldenrod Solidago gigantea
    • Gray goldenrod Solidago nemoralis
    • Hairy goldenrod Solidago hispida
    • Missouri goldenrod Solidago missouriensis
    • Riddell’s goldenrod Solidago riddellii
    • Stiff goldenrod Solidago rigida
    • Soft goldenrod Solidago mollis (special concern)
    • Upland white aster Solidago ptarmicoides
    • Zigzag goldenrod Solidago flexicaulis
  • Ground plum Astragalus crassicarpus
  • Gumweed Grindelia squarrosa


H

  • Harebell Campanula rotundifolia
  • Hepatica
    • Sharp-lobed hepatica Anemone acutiloba
    • Round-lobed hepatica Anemone americana
  • Honeysuckle
    • Bush honeysuckle Diervilla lonicera
    • Fly honeysuckle Lonicera canadensis
    • Grape honeysuckle Lonicera reticulata
    • Hairy honeysuckle Lonicera hirsuta
    • Mountain fly honeysuckle Lonicera villosa
    • Swamp fly honeysuckle Lonicera oblongifolia
    • Wild honeysuckle Lonicera dioica


I

  • Indian paintbrush

    • Downy paintbrush Castilleja sessiliflora
    • Indian paintbrush Castilleja coccinea
    • Northern paintbrush Castilleja septentrionalis (endangered)
  • Indian pipe Monotropa uniflora


J

  • Jack-in-the-pulpit Arisaema triphyllum
  • Joe pye weed
    • Spotted Joe pye weed Eupatorium maculatum
    • Sweet Joe pye weed Eupatorium purpureum


L

  • Lady’s slippers

    • Andrew’s lady’s slipper Cypripedium x andrewsii
    • Showy lady’s slipper Cypripedium reginae (the Minnesota State flower)
    • Small white lady’s slipper Cypripedium candidum (special concern)
    • Stemless lady’s slipper, also known as Moccasin flower, Cypripedium acaule
    • Yellow lady’s slipper Cypripedium calceolus
  • Leadplant Amorpha canescens


M

  • Marsh marigold

    • Floating marsh marigold Caltha natans (endangered)
    • Common marsh marigold Caltha palustris
  • Milk vetch
    • Alpine milk vetch Astragalus alpinus (endangered)
    • Canada milk vetch Astragalus canadensis
    • Cooper’s milk vetch Astragalus neglectus
    • Field milk vetch Astragalus agrestis
    • Loose-flowered milkvetch Astragalus tenellus
    • Lotus milk vetch Astragalus lotiflorus
    • Missouri milk vetch Astragalus missouriensis (special concern)
    • Prairie milk vetch Astragalus adsurgens
    • Racemose milk vetch Astragalus racemosus (possibly non-native)
    • Slender milk vetch Astragalus flexuosus (special concern)
  • Milkweeds
    • Clasping milkweed Asclepias amplexicaulis (special concern)
    • Common milkweed Asclepias syriaca
    • Green milkweed Asclepias viridiflora
    • Narrow-leaved milkweed Asclepias stenophylla (endangered)
    • Oval-leaved milkweed Asclepias ovalifolia
    • Poke milkweed Asclepias exaltata
    • Prairie milkweed Asclepias hirtella (threatened)
    • Purple milkweed Asclepias purpurascens
    • Showy milkweed Asclepias speciosa
    • Sullivant’s milkweed Asclepias sullivantii (threatened)
    • Swamp milkweed Asclepias incarnata var. incarnata
    • Whorled milkweed Asclepias verticillata
    • Woolly milkweed Asclepias lanuginosa
  • Miterwort
    • Naked miterwort Mitella nuda
    • Two-leaved miterwort Mitella diphylla


O

  • Orchids

    • Hooker’s orchid Platanthera hookeri
    • Intermediate bog orchid Platanthera x media
    • Large round-leaved orchid Platanthera orbiculata
    • Long-bracted orchid Ceologlossum viride var. varescens
    • Ragged fringed orchid Platanthera lacera
    • Ram’s head orchid Cypripedium arietinum (threatened)
    • Small green wood orchid Platanthera clavellata (special concern)
    • Small northern bog orchid Platanthera obtusata
    • Small purple fringed orchid Platanthera psycodes
    • Tall northern bog orchid Platanthera hyperborea
    • Tall white bog orchid Platanthera dilatata
    • Tubercled rein orchid Platanthera flava var. herbiola (endangered)
    • Western prairie fringed orchid Platanthera praeclara (threatened)
  • Ox-eye Heliopsis helianthoides var. scabra


P

  • Pasqueflower Anemone patens var. multifida
  • Pearly everlasting Anaphalis margaritacea
  • Phlox
    • Blue phlox Phlox divaricata var. laphamii
    • Prairie phlox Phlox pilosa var. fulgida
  • Pitcher plant Sarracenia purpurea var. purpurea
  • Prairie clover
    • White prairie clover Dalea candida
    • Western white prairie clover Dalea candida var. oligophylla
    • Foxtail dalea Dalea leporina
    • Purple prairie clover Dalea purpurea var. purpurea
    • Silky prairie clover Dalea villosa var. villosa
  • Prairie larkspur Delphinium carolinianum var. virescens
  • Prairie smoke Geum triflorum
  • Prairie turnip Pediomelum esculentum
  • Puccoon
    • Hoary puccoon Lithospermum canescens
    • Hairy puccoon Lithospermum carolinense var. croceum
    • Narrow-leaved puccoon Lithospermum incisum
  • Pyrolas (also known as shinleaves)
    • Elliptic shinleaf Pyrola elliptica
    • Green-flowered pyrola Pyrola chlorantha
    • One-flowered pyrola Pyrola unifora
    • One-sided pyrola Pyrola secunda
    • Pink shinleaf Pyrola asarifolia
    • Round-leaved pyrola Pyrola rotundifolia var. americana
    • Small shinleaf Pyrola minor (special concern)


R

  • Roses

    • Prairie rose Rosa arkansana
    • Prickly rose Rosa acicularis
    • Smooth wild rose Rosa blanda
    • Wood’s rose Rosa woodsii var. woodsii’


S

  • Silverleaf scurfpea Pediomelum argophyllum
  • Spiderwort
    • Bracted spiderwort Tradescantia bracteata
    • Ohio spiderwort Tradescantia ohiensis
    • Western spiderwort Tradescantia occidentalis
  • Starflower Trientalis borealis
  • Strawberry
    • Common strawberry Fragaria virginiana
    • Wood strawberry Fragaria vesca var. americana
  • Sunflowers
    • Bright sunflower Helianthus x laetiflorus
    • Common sunflower Helianthus annuus
    • Giant sunflower Helianthus giganteus
    • Hairy sunflower Helianthus hirsutus
    • Maximilian’s sunflower Helianthus maximiliani
    • Nuttall’s sunflower Helianthus nuttallii ssp. rydbergii (special concern)
    • Prairie sunflower Helianthus petiolaris var. petiolaris
    • Sawtooth sunflower Helianthus grosseserratus
    • Stiff sunflower Helianthus pauciflorus
    • Tickseed sunflower Bidens aristosa
    • Western sunflower Helianthus occidentalis var. occidentalis
    • Woodland sunflower Helianthus strumosus


T

  • Tarragon Artemisia dracunculus
  • Touch-me-not
    • Pale touch-me-not Impatiens pallida
    • Spotted touch-me-not Impatiens capensis
  • Trilliums
    • Drooping trillium Trillium flexipes
    • Large-flowered trillium Trillium grandiflorum
    • Nodding trillium Trillium cernuum var. macranthum
    • Snow trillium Trillium nivale
  • Twinflower Linnaea borealis var. longiflora
  • Twistedstalk
    • Clasping leaved twistedstalk Streptopus amplexifolius
    • Rose twistedstalk Streptopus roseus var. longipes


V

  • Violets

    • Arrow-leaved violet Viola sagittata
    • Bearded birdfoot violet Viola palmata var. pedatifida
    • Beardless birdfoot violet Viola pedata
    • Big-leaved white violet Viola blanda
    • Common blue violet Viola sororia
    • Dog violet Viola conspersa
    • Great-spurred violet Viola selkirkii
    • Kidney-leaved violet Viola renifolia
    • Marsh violet Viola cucullata
    • Lance-leaved violet Viola lanceolata (threatened)
    • New England violet Viola novae-angliae
    • Northern bog violet Viola nephrophylla
    • Northern white violet Viola macloskeyi var. pallens
    • Rugulose violet Viola canadensis var. rugulosa
    • Sand violet Viola adunca
    • Yellow prairie violet Viola nuttallii (threatened)
    • Yellow violet Viola pubescens
  • Violet wood sorrel Oxalis violacea
  • Virginia mountain mint Pycnanthemum virginianum


W

  • White camas Zigadenus elegans
  • Wild bergamot Monarda fistulosa
  • Wild calla Calla palustris
  • Wild licorice Glycyrrhiza lepidota
  • Wild onion
    • Nodding wild onion Allium cernuum
    • Prairie wild onion Allium stellatum
    • White wild onion Allium textile
  • Wild sweet William Phlox maculata
  • Wintergreen Gaultheria procumbens
  • Wolfberry Symphoricarpos occidentalis
  • Wood betony Pedicularis canadensis
  • Wood lily Lilium philadelphicum var. andinum
  • Wormwood
    • Sage wormwood Artemisia frigida
    • Tall wormwood Artemisia campestris


References

  • MN DNR - List of Vascular Plants of Minnesota (9/25/02), including native/nonnative status
  • Minnesota DNR - Wildflowers

May

6

Translocation

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Translocation may refer to:

  • chromosomal translocation in genetics
  • transport of food through phloem in plants
  • a process in protein biosynthesis
  • Translocation (Wildlife conservation): Capture, transport and release or introduction or reintroduction of wildlife i.e. wild species of plants and animals etc. from one location to another.

May

6

Floral symmetry

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Floral symmetry refers to whether, and how, a flower can be divided into two or more identical or mirror-image parts.

Most flowers are actinomorphic (”star shaped”), meaning they can be divided into symmetrical halves by more than one longitudinal plane passing through the axis, much as a pie can be cut into several equal and identical pieces. In these flowers, the petals are usually similar in shape, size, and color. Such flowers are also called radially symmetrical or regular flowers. Examples of actinomorphic flowers are the lily (Lilium, Liliaceae) and the buttercup (Ranunculus, Ranunculaceae).

Zygomorphic (”yoke shaped”) flowers can be divided by only a single plane into two mirror-image halves, much like a yoke or a person’s face. Examples are orchids and the flowers of most members of the Lamiales (e.g., Scrophulariaceae and Gesneriaceae). Zygomorphic flowers generally have petals of two more different shapes, sizes, and colors. Least commonly, flowers may be asymmetrical; they cannot be divided into two identical or mirror-image halves on any plane. Such flowers are typical of most members of the Zingiberales, such as cannas and various gingers. In most cases, different kinds of floral symmetry are linked to particular pollinators.

Some familiar and seemingly actinormophic flowers, such as those of daisies and dandelions (Asteraceae), are actually clusters of tiny zygomorphic flowers arranged into a radially symmetric inflorescence.

Peloria or a peloric flower refers to an aberration in which a plant that normally produces zygomorphic flowers produces actinomorphic flowers instead. This aberration can be developmental, or it can have a genetic basis. Many modern cultivars of Sinningia speciosa (”gloxinia”) have been bred to have peloric flowers as they are larger and showier than the normally zygomorphic flowers of this species.


References

  • P.K. Endress. 2001. Evolution of floral symmetry. Current Opinions in Plant Biology 4: 86-91 (abstract here)
  • P.R. Neal, A. Dafni and M. Giurfa. 1998. Floral symmetry and its role in plant-pollinator systems: terminology, distribution, and hypotheses. Annual Review of Ecology and Systematics 29: 345-373 (abstract here).
  • Gentiana by Christa Kletter, Monika Kriechbaum - 2001 - Health & Fitness - 383 pagesIn Gentiana macrophylla PALL, all flowers are concentrated at the top of its stem, like in G. robusta and G. tibetica, but they are bluish-purple with a

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Stichotrich

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The stichotrichs are a group of ciliate protozoa, included among the spirotrichs. Like the hypotrichs, with which they were originally classified, they have body cilia fused into cirri, but these are mostly arranged into rows, running along the ventral surface or edges of the cell. Most stichotrichs are flattened and reasonably flexible. Stylonychia and Oxytricha are representative genera. Some evidence suggests that the hypotrichs may be paraphyletic to them, and that they in turn may be paraphyletic to the oligotrichs.


External links

  • Stichotrich information

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Drift migration

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Drift migration is the phenomenon in which migrating birds are blown off course by the winds at the time they are in flight. It is more likely to happen to birds heading south in autumn because the large numbers of inexperienced young birds are less able to compensate than the adults heading north in spring.

Drift is assisted by disorientating conditions such as mist or drizzle, and can result in large numbers of birds arriving together in an area in which they are not normally seen. In the UK this is called a fall, while in the U.S. it’s known as a fallout, though in the latter case, it need not involve vagrant birds.

An example would be an east wind in September blowing Scandinavian migrants such as Bluethroats, Wrynecks, and the continental race of Robin onto the east coast of England and Scotland, leading to temporary concentrations of these species at headlands like Spurn.

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