Biology:Euphorbia hooveri
| Euphorbia hooveri | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Euphorbiaceae |
| Genus: | Euphorbia |
| Species: | E. hooveri
|
| Binomial name | |
| Euphorbia hooveri L.C.Wheeler
| |
| Synonyms | |
|
Chamaesyce hooveri | |
Euphorbia hooveri is a species of euphorb known by the common names Hoover's sandmat and Hoover's spurge. It is endemic to California , where it grows in the rare vernal pools of the Central Valley. Due to the elimination of most of its habitat, it became a federally listed threatened species in 1997.[1]
This is an annual herb forming flat mats of thin, hairless stems. The stems are ringed with pairs of tiny, minutely toothed round leaves, each gray-green leaf blade only a few millimeters wide. The inflorescence is a cyathium only two millimeters wide. The cyathium is made up of flat, white appendages surrounding a single minute female flower within a cluster of several male flowers. The female flower develops into a spherical fruit containing white seed. The seeds germinate once the pool evaporates with the arrival of summer.[2]
The vernal pools of the Central Valley have nearly disappeared as the land there has been consumed for agriculture and development.[3] This plant occurs in the center of a vernal pool, usually in the deepest part that becomes a mudflat as the pool dries.[3] The plant grows from the cracks in the drying mud.[3] Another threat to the species is invasive plant species that move into its habitat.[3]
References
- ↑ California Native Plant Society Rare Plant Profile
- ↑ Fish & Wildlife Service Chamaesyce hooveri Recovery Plan from Recovery Plan for Vernal Pool Ecosystems of California and Southern Oregon
- ↑ 3.0 3.1 3.2 3.3 The Nature Conservancy
External links
Wikidata ☰ Q8846357 entry
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