| Holozonia | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Madieae |
| Subtribe: | Madiinae |
| Genus: | Holozonia Greene |
| Species: | H. filipes |
| Binomial name | |
| Holozonia filipes (Hook. & Arn.) Greene | |
| Synonyms | |
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Holozonia is a North American genus of flowering plants in the family Asteraceae. It contains only one known species Holozonia filipes, which is known by the common name whitecrown. It is endemic to California.
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.
References
- Tropicos, Holozonia filipes (Hook. & Arn.) Greene
- "Map". Retrieved 2024-09-17.
- "Holozonia filipes Calflora". www.calflora.org. Retrieved 2024-09-18.
- 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.
External links
- Jepson Manual Treatment, University of California
- United States Department of Agriculture Plants Profile
- Callphotos Photo gallery, University of California
| Taxon identifiers | |
|---|---|
| Holozonia |
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| Holozonia filipes |
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