# Potentilla callida

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{{Short description|Species of flowering plant}}
{{Speciesbox
| image = Ivesia callida.jpg
| status = G1
| status_system = TNC
| genus = Potentilla 
| species = callida
| authority = [H.M.Hall](/source/H.M.Hall)
| synonyms = 
* ''Ivesia callida'' <small>(H.M.Hall) [Rydb.](/source/Per_Axel_Rydberg)</small>
* ''Potentilla shockleyi'' var. ''callida'' <small>(H.M.Hall) Jeps.</small>
}}

'''''Potentilla callida''''', commonly known as '''Tahquitz mousetail''', is a rare species of flowering plant in the [rose family](/source/Rosaceae).<ref>{{Cite web |title=Potentilla callida H.M.Hall {{!}} Plants of the World Online {{!}} Kew Science |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:209056-2 |access-date=2024-06-11 |website=Plants of the World Online |language=en}}</ref> 

The plant is [endemic](/source/endemic) to the [San Jacinto Mountains](/source/San_Jacinto_Mountains) of [Riverside County, California](/source/Riverside_County%2C_California), where it is known from only two occurrences. The plant grows in cracks and crevices of [granite](/source/granite) mountain cliffs. It was named for [Tahquitz Rock](/source/Tahquitz_Rock), a rock formation in its endemic range. The rock formation was named for the Native American spirit [Tahquitz](/source/Tahquitz_(spirit)).

== Description ==
''Potentilla callida'' is a small perennial herb which forms matted patches of hanging foliage on cliff faces. The leaves are strips of oval-shaped green leaflets. Each leaf is up to 7 centimeters long and has several pairs of hairy, glandular leaflets. The thin, green, hanging stems grow up to 15 centimeters long and bear an [inflorescence](/source/inflorescence) of several flowers. Each flower has five hairy, pointed [sepal](/source/sepal)s and five round to oval white petals. The center of the flower contains twenty [stamen](/source/stamen)s with disc-shaped anthers and several [pistils](/source/Gynoecium).

==References==
{{Reflist}}

==External links==
*[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?6677,6772,6781 Jepson Manual Treatment: ''Ivesia callida'']
*[https://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Ivesia+callida ''Ivesia callida'' — U.C. Photo gallery]

{{Taxonbar|from=Q95952083|from2=Q12840696}}

callida
Category:Endemic flora of California
Category:Flora of Riverside County, California
Category:Natural history of the Peninsular Ranges
Category:Flora and fauna of the San Jacinto Mountains
Category:Critically endangered flora of California

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Adapted from the Wikipedia article [Potentilla callida](https://en.wikipedia.org/wiki/Potentilla_callida) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Potentilla_callida?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.