Webber Ivesia (Ivesia webberi)
Where Listed: WHEREVER FOUND
Ivesia webberi is a member of the Rosaceae (rose family). It is a low, spreading, perennial forb up to 9.8 inches (in) (25 centimeters (cm)) across with greenish-gray foliage and dark red, wiry stems (Figure 1). The 1.2–2.8 in (3–7 cm) long leaves are mostly clustered around the base of the stems, with 4–8 pairs of leaflets crowded at the tip, and are generally covered with long, silky grayish hairs. The inflorescence is a capitate or subcapitate cyme (i.e., a flat-topped inflorescence in a head-like or head shaped cluster) with 5–15 flowers per group. Flowers are about 0.4 in (10 millimeters (mm)) across and bright yellow with 5 stamens and petals that are much smaller than the sepals. The whole plant becomes reddish-tinged late in the season. Flowering typically begins in May and extends through June (Witham 2000, p. 9; Ertter 2012; http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29467, accessed November 5, 2012).
- States/US Territories in which the Webber Ivesia, Wherever found is known to or is believed to occur: California , Nevada
- US Counties in which the Webber Ivesia, Wherever found is known to or is believed to occur: View All
- Countries in which the the Webber Ivesia, Wherever found is known to occur: United States
|Status||Date Listed||Lead Region||Where Listed|
|2014-07-03||California/Nevada Region (Region 8)||Wherever found|
» Federal Register Documents
No recovery information is available for the Webber Ivesia.
» Critical Habitat
|Date||Citation Page||Title||Document Type||Status|
|2014-06-03||79 FR 32125 32155||Designation of Critical Habitat for Ivesia webberi; Final Rule||Final Rule||Final designated|
|2013-08-02||78 FR 46862 46889||Designation of Critical Habitat for Ivesia webberi: Proposed Rule||Proposed Rule||Not Required|
To learn more about critical habitat please see http://ecos.fws.gov/crithab
» Conservation Plans
No conservation plans have been created for Webber Ivesia.
» Life History
No Life History information has been entered into this system for this species.
» Other Resources
NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.
ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.