Bidens heterosperma
| Bidens heterosperma | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Bidens |
| Species: | B. heterosperma
|
| Binomial name | |
| Bidens heterosperma | |
Bidens heterosperma, commonly known as the Rocky Mountain beggarticks, is an annual or perennial, herbaceous, flowering plant in the family Asteraceae, tribe Coreopsideae. It is native to northwestern and north-central Mexico, and portions of the southwestern United States.
Description
[edit]Bidens heterosperma is an annual or perennial, herbaceous, flowering plant that grows between 5 to 60 cm (2.0 to 23.6 in) tall. The leaves are opposite, and are attached to petioles that are between 0.3 to 2 cm long; The leaf blades are once or twice pinnately divided, the terminal lobe is linear or filiform and is between 0.2 to 2.5 cm long by 0.5 to 2 cm wide; the leaves sometimes have small, hair-like protrusions on the margins; It usually produces flower heads one at a time on peduncles 1-10 cm long in groups of 5-6. The involucres are cylindric. There are 5-6 lanceolate to lance-elliptic phyllaries. There are 0-3 ray florets with yellow petals, and 5-13 disk florets with yellow corollas.[3][4]
The plant flowers from September to October.[3]
Distribution and habitat
[edit]Bidens heterosperma is native to Mexico (the states of Baja California, Chihuahua, Sinaloa, and Sonora) and portions of the Southwestern United States (the states of Arizona, Colorado, and New Mexico).[3][5]
Habitat
[edit]The plant typically grows on seeps on rocky slopes at elevations of 1,500 to 2,800 m (4,900 to 9,200 ft) from sea level.[3]
Conservation
[edit]As of December 2024[update], the conversation organization NatureServe listed Bidens heterosperma as Secure (G5) worldwide. Individual states have not been ranked. This status was last reviewed on 2 June 1993.[1]
Taxonomy
[edit]Bidens heterosperma was first named by Asa Gray in 1853 in the Smithsonian Contributions to Knowledge, volume 5 journal. The species has no listed synonyms in Plants of the World Online, World Flora Online, and Tropicos databases.[6][7][2]
Etymology
[edit]According to SEINet, the species epithet heterosperma means "different seed". In English, the species is commonly called the Rocky Mountain Beggerticks.[8]
References
[edit]- ^ a b "Bidens heterosperma | NatureServe Explorer". NatureServe Explorer. Retrieved 1 December 2024.
- ^ a b "Tropicos | Name - Bidens heterosperma". Tropicos. Retrieved 1 December 2024.
- ^ a b c d "Bidens heterosperma - FNA". Flora of North America. Retrieved 1 December 2024.
- ^ "Smithsonian Contributions to Knowledge 5(6): 90–91. 1853". Smithsonian Contributions to Knowledge. 5: 90–91. 1853 – via Biodiversity Heritage Library.
- ^ Biota of North America Program 2014 county distribution map
- ^ "Bidens heterosperma A.Gray | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2024-12-01.
- ^ "Bidens heterosperma A.Gray". The World Flora Online. Retrieved 1 December 2024.
- ^ "SEINet Portal Network - Bidens heterosperma". swbiodiversity.org. Retrieved 2024-12-01.
