| Heterotheca subaxillaris | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Heterotheca |
| Species: | H. subaxillaris |
| Binomial name | |
| Heterotheca subaxillaris | |
| Synonyms [2] | |
Synonymy
| |
Heterotheca subaxillaris, known by the common name camphorweed, [3] is a North American species of flowering plant in the family Asteraceae. [4]
It is widespread across much of the United States (from California to Massachusetts) as well as Mexico and Belize. [5] [6]
H. subaxillaris may be found in habitats such as upper beaches, longleaf pine-wiregrass savannas, and pine-scrub oak sand ridges. [7]
Heterotheca subaxillaris is a perennial, aromatic herb up to 203 centimeters (80 inches or 6 2/3 feet) in height, often with several erect stems. The stems are hairy to bristly. The inflorescence contains 3-180 flower heads in a flat-topped array. Each head contains 15–35; yellow ray florets surrounding 25–60 disc florets at the center. [8]
The leaf volatiles from which the name "camphorweed" is derived include camphor, but as a minor constituent (less than 2%); of 41 documented volatiles, for example, caryophyllene, pinene, borneol, myrcene, and limonene each comprised over 5% of the total. [9]
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