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''Pentachaeta exilis'' is a species of flowering plant in the aster family known by the common name meager pygmydaisy. It is endemic to California, where it is known from the North Coast Ranges to the southern Central Valley, San Joaquin Valley, and Sierra Nevada foothills. It is a member of grassland and woodland plant communities. ==Description== ''Pentachaeta exilis'' is an annual herb with a hairy stem no more than about 6 centimeters tall. The narrow linear leaves are up to 3 centimeters long but only about a millimeter wide. The inflorescence is a solitary flower head, with up to 23 heads per plant. The two subspecies of the plant have different types of heads. Most incidences of the plant are ssp. ''exilis'', which has long reddish disc florets in its head but only rudimentary ray florets. The rare subspecies ''aeolica'', which is known from just a few occurrences in the Central Coast Ranges, generally produces some white ray florets around a center of yellow disc florets. ==External links== *(Jepson Manual Treatment - ''Pentachaeta exilis'' ) *(USDA Plants Profile: ''Pentachaeta exilis'' ) *(Photo gallery: ''Pentachaeta exilis'' ssp. ''aeolica'' ) *(Photo gallery: ''Pentachaeta exilis'' ssp. ''exilis'' ) 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「Pentachaeta exilis」の詳細全文を読む スポンサード リンク
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