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・ Erigeron modestus
・ Erigeron morrisonensis
・ Erigeron muirii
・ Erigeron multiceps
・ Erigeron multifolius
・ Erigeron multiradiatus
・ Erigeron nanus
・ Erigeron nauseosus
・ Erigeron nematophyllus
・ Erigeron neomexicanus
・ Erigeron nivalis
・ Erigeron ochroleucus
・ Erigeron oreades
・ Erigeron oreganus
・ Erigeron oreophilus
Erigeron ovinus
・ Erigeron oxyphyllus
・ Erigeron pacayensis
・ Erigeron pallens
・ Erigeron parishii
・ Erigeron parryi
・ Erigeron pauper
・ Erigeron peregrinus
・ Erigeron petiolaris
・ Erigeron petrophilus
・ Erigeron philadelphicus
・ Erigeron pinnatisectus
・ Erigeron piperianus
・ Erigeron piscaticus
・ Erigeron poliospermus


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Erigeron ovinus : ウィキペディア英語版
Erigeron ovinus

''Erigeron ovinus '' is a rare North American species of flowering plant in the daisy family, called the sheep fleabane.〔 It is has been found only in the southeastern part of the US State of Nevada (Clark County + Lincoln County).〔(Biota of North America Program 2014 county distribution map )〕
''Erigeron ovinus '' is a perennial herb up to 15 centimeters (6 inches) tall, with a large taproot, forming clumps of many individuals close together. Leaves are pinnatifid with long narrow lobes. The plant generally produces one or two flower heads per stem, each head with numerous yellow disc florets but no ray florets. The species grows on ridges and in cracks in rocks in conifer woodlands.〔(Flora of North America, Erigeron ovinus Cronquist, 1947. Sheep fleabane )〕
The oldest name for this plant is ''Erigeron caespitosus'' subsp. ''anactis.''〔(Blake, Sydney Fay 1922. Proceedings of the Biological Society of Washington 35(34): 175 ) as ''Erigeron caespitosus'' subsp. ''anactis''〕 Conquist in 1947 sought to raise this from subspecies to the level of species, but opted to forgo the common (but not mandatory) practice of using the subspecific epithet as a species epithet. He chose a new epithet instead, ''ovinus.''〔Cronquist, Arthur John. 1947. Brittonia 6(2): 164〕
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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