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Holozonia
''Holozonia'' is a North American genus of flowering plants in the daisy family. It contains only one known species ''Holozonia filipes'', which is known by the common name whitecrown. It is endemic to (found only in) California.〔(Biota of North America Program 2014 county distribution map )〕〔(Calflora taxon report, ''Holozonia filipes'' (Hook. & Arn.) E. Greene, Greene's white crown, Holozonia, whitecrown )〕
''Holozonia filipes'' is a scraggly rhizomatous perennial herb growing a hairy, glandular, branching stem 30 centimeters (1 foot) to 1.5 meters (5 feet) long. The lower stem is gray-green and the upper stem branches are green to red in color. The lance-shaped leaves are up to 10 centimeters (4 inches) long and covered in resin glands. They are arranged oppositely on the lower part of the stem. The flower heads appear at the ends of the stem branches in a loose inflorescence. Each head has layers of sticky, hairy phyllaries. The ray florets are each divided into long lobes and are white in color. The disc florets are white with large purple anthers.〔(Flora of North America, ''Holozonia'' Greene, 1882. )〕〔Thompson, W. C. 1983. A Biosystematic Study of ''Lagophylla'' (Compositae: Heliantheae) and Related Taxa. Ph.D. dissertation. University of California, Davis.〕
== 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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