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''Veratrum californicum'' (California corn lily, white or California false hellebore) is a poisonous plant native to mountain meadows at 3500 to 11,000 ft elevation in southwestern North America, the Sierra Nevada and Rocky Mountains, and as far north as Washington State and as far south as Durango.〔(Kew World Checklist of Selected Plant Families )〕〔 It grows 1 to 2 meters tall, with an erect, unbranched, heavily leafy stem resembling a cornstalk. It prefers quite moist soil, and can cover large areas in dense stands near streams or in wet meadows. Many inch-wide flowers cluster along the often-branched top of the stout stem; they have 6 white tepals, a green center, 6 stamens, and a 3-branched pistil (see image below). The buds are tight green spheres. The heavily veined, bright green leaves can be more than a foot long. ''Veratrum californicum'' displays mast seeding; populations bloom and seed little in most years, but in occasional years bloom and seed heavily in synchrony. ;varieties〔 # ''Veratrum californicum'' var. ''californicum'' - from Washington to Durango # ''Veratrum californicum'' var. ''caudatum'' (A.Heller) C.L.Hitchc. - Idaho, Washington, Oregon, N California ==Teratogenic effects == It is a source of jervine and cyclopamine, teratogens which can cause prolonged gestation associated with birth defects〔(【引用サイトリンク】title=Prolonged Gestation in Ewes Ingesting Veratrum californicum: Morphological Changes and Steroid Biosynthesis in the Endocrine Organs of Cyclopic Lambs )〕 such as holoprosencephaly and cyclopia in animals such as sheep, horses, and other mammals that graze upon it. These substances inhibit the hedgehog signaling pathway. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Veratrum californicum」の詳細全文を読む スポンサード リンク
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