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・ Streptanthus diversifolius
・ Streptanthus drepanoides
・ Streptanthus farnsworthianus
・ Streptanthus fenestratus
・ Streptanthus glandulosus
・ Streptanthus gracilis
・ Streptanthus hispidus
・ Streptanthus howellii
・ Streptanthus insignis
・ Streptanthus longisiliquus
・ Streptanthus morrisonii
・ Streptanthus niger
・ Streptanthus oliganthus
・ Streptanthus polygaloides
・ Streptanthus tortuosus
Streptanthus vernalis
・ Streptartemon
・ Streptartemon glaber
・ Streptavidin
・ Streptaxidae
・ Streptaxis
・ Streptaxoidea
・ Streptazolin
・ Streptoalloteichus
・ Streptobacillus
・ Streptobacillus moniliformis
・ Streptocarpus
・ Streptocarpus rexii
・ Streptocaulon
・ Streptocephalus


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Streptanthus vernalis : ウィキペディア英語版
Streptanthus vernalis

''Streptanthus vernalis'' is a rare species of flowering plant in the mustard family known by the common name early jewelflower. It was first observed in the 1970s but not actually described to science until 2005.〔O'Donnell, R. and R. W. Dolan. (2005). (A new species of ''Streptanthus'' (Brassicaceae) from Three Peaks in Lake County, California. ) ''Madroño'' 52(3) 202-6.〕 It is endemic to Lake County, California, where it is known from a single occurrence at Three Peaks near the Napa County line. It is apparently limited to serpentine outcrops in forested and chaparral habitat. Genetic analysis indicates that the species is distinct from other ''Streptanthus'' and is most closely related to ''Streptanthus morrisonii'', which it resembles.〔 It is a hairless annual herb producing an erect branching or unbranched stem 2 to 20 centimeters tall. The ephemeral basal leaves have thick, fleshy leaves which are green and unmottled on top and purple on the undersides. Leaves higher on the stem are linear to lance-shaped and lack petioles. Flowers occur at intervals along the upper stem. Each flower has an urn-shaped calyx of sepals which is solid green with no purple or yellowish tinge. The petals emerging from the tip are white without darker veining. The fruit is a flattened straight silique 3 to 5 centimeters long containing orange seeds.
==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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