Jamesia
| Jamesia | |
|---|---|
 | |
| Jamesia americana in flower | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Cornales |
| Family: | Hydrangeaceae |
| Subfamily: | Jamesioideae |
| Genus: | Jamesia Torr. & A.Gray |
| Type species | |
| Jamesia americana Torr. & A.Gray | |
| Species | |
| |
| Synonyms | |
|
Edwinia A.Heller | |
Jamesia is a genus of shrubs in the Hydrangeaceae, most commonly known as Jamesia, cliffbush or waxflower. It is native to interior western North America, in the U.S. states of Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming and in northeastern Mexico, where it grows in mountains at 1,600–3,000 m elevation.
Modern species are characterized by grey or reddish-brown bark and five-petaled flowers in white or pink.
Taxonomy
Publication
The genus Jamesia was described by John Torrey and Asa Gray in 1840.
Species
The following species are accepted:
- Jamesia americana Torr. & A.Gray
- Jamesia tetrapetala N.H.Holmgren & P.K.Holmgren
Description
 |
It is a shrub growing to 1–2 m tall and to 3 m or more broad, with opposite simple leaves 3–7 cm long and 2–5 cm broad, with a serrated margin and a crinkled surface. The flowers are produced in erect terminal panicles, each flower white, 15–20 mm diameter, with five (rarely four) petals. The fruit is a dry capsule with numerous small seeds.
Etymology
The genus is named in honor of Edwin James, the botanist on Stephen Long's expedition in 1820 that explored the territory between the Platte and Arkansas Rivers. James was the first to collect this genus for botanical study.
Notes
- ↑ Jamesia | International Plant Names Index. (n.d.). Retrieved January 6, 2024, from https://www.ipni.org/n/328793-2
- 1 2 3 4 5 "Jamesia Torr. & A.Gray". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 28 May 2026.
- ↑ "Cliff Jamesia". www.fs.usda.gov. Retrieved 2026-10-01.
- ↑ Holmgren & Holmgren (1989)
- ↑ "Jamesia americana - Trees and Shrubs Online". www.treesandshrubsonline.org. Retrieved 2026-10-13.
- ↑ Fertig, USDA
References
- Fertig, Walter. "Cliff Jamesia (Jamesia americana)". USDA Forest Service.
- Holmgren, Noel H.; Holmgren, Patricia K. (1989). "A Taxonomic Study of Jamesia (Hydrangeaceae)". Brittonia. 41 (4): 335–350. Bibcode:1989Britt..41..335H. doi:10.2307/2807545. JSTOR 2807545. S2CID 44553697.
- "Jamesia". The Plant List. 2013.
External links
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