Hemizonella minima
| Hemizonella minima | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Hemizonella |
| Species: | H. minima |
| Binomial name | |
| Hemizonella minima A.Gray | |
| Synonyms | |
|
Madia minima | |
Hemizonella minima — (syn. Madia minima), known by the common name opposite-leaved tarweed, is a species of flowering plant in the aster family.
The plant is native to western North America from British Columbia and Montana through Southern California, where it grows in many types of forest, scrub, and chaparral habitats, from mountains to deserts. It is found in the Sierra Nevada and Cascade Range, and Mojave Desert.
Description
Hemizonella minima is a small annual herb producing a thin, fuzzy stem up to about 15 centimetres (5.9 in) in maximum height. The pointed, hairy leaves are no more than 2.5 centimetres (0.98 in) long.
The inflorescence produces one or more tiny flower heads which are oblong or shaped like tops on close inspection. Each is a few millimeters wide, enclosed in phyllaries studded with stalked resin glands, and tipped with minute yellowish florets.
The fruit is an achene a few millimeters long with no pappus.
External links
- Jepson Manual Treatment — Hemizonella minima
- USDA Plants Profile: Hemizonella minima (opposite-leaved tarweed)
- Flora of North America
- Hemizonella minima — U.C. Photo gallery