Osmadenia

Osmadenia
Osmadenia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Osmadenia
Nutt.
Species: O. tenella
Binomial name
Osmadenia tenella
Nutt.
Synonyms

Calycadenia tenella

Osmadenia is a monotypic genus of flowering plants in the daisy family containing the single species Osmadenia tenella, which is known by the common name false rosinweed. It is native to the hills and canyons of southern California and Baja California, where it is an uncommon member of the flora in local habitat such as chaparral. It is a hairy, glandular, aromatic annual herb producing an erect stem approaching 40 centimeters in maximum height with threadlike branches. The linear leaves are alternately arranged, the largest low on the plant measuring up to 5 centimeters. The inflorescence is a cyme of several flower heads. Each head has 3 to 5 three-lobed ray florets which are white or pink-tinged and often have a pink spot, and several narrower disc florets. The fruit is an achene; those arising from disc florets have pappi.

External links


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  • Osmadenia tenella — ID 58311 Symbol Key OSTE Common Name false rosinweed Family Asteraceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution CA Growth Habit Forb/herb Duration …   USDA Plant Characteristics

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