The following Participating Institutions are custodians for this species in the CPC National Collection:
Rancho Santa Ana Botanic Garden
The conservation of Claytonia lanceolata var. peirsonii is fully sponsored.
Valerie Soza contributed to this Plant Profile.
Claytonia lanceolata var. peirsonii is an endemic to the eastern end of the San Gabriel Mountains of the Western Transverse Ranges. This perennial herb grows at high elevations from a globose corm generally with 2 cauline, reddish-green leaves that emerge right after snow melts (Mistretta and Brown 1987).
Distribution & Occurrence
North and northwest-facing slopes of dry ridges and steep scree slopes, 7500-9000 feet elevation, occurring in lodgepole pine forest and upper montane mixed coniferous forest. Occurring in open sunny, rocky areas or in shady, conifer litter. Populations occur on metamorphic rock (Pelona schist), slopes range from 24-37 degrees (Allan et al. 1995; Hickman 1993; Mistretta and Brown 1987; Soza and Boyd 2000; Tibor 2001).
|Five populations at Devils Backbone (245 individuals in 1987; 205 individuals in 2000), Thunder Mountain (420 individuals in 1987), Telegraph Peak (175 individuals in 1987; 165 individuals in 2000), Kellys Camp (360 individuals in 1987; 1,167 individuals in 2000), and Timber Mountain (475 individuals; 1,279 individuals in 2000), for a total of approximately 1700 individuals in 1987 and 2800+ individuals in 2000. The populations appear relatively stable, naturally fluctuating, with a dramatic increase in several of the populations noted in 2000 (Mistretta and Brown 1987; Mistretta 1994a; Soza and Boyd 2000).|
Conservation, Ecology & Research
Information on life history, seed set, germination success, and plant longevity is unknown and needs study (Mistretta and Brown 1987).
Allan, G.J.; Mistretta, O.; Tommerup, M.; Blassey, K.; Brown, W.J., Jr. 1995. A field guide to the rare plants of the Angeles National Forest. USDA Forest Service, Pacific Southwest Region, Angeles National Forest, in cooperation with Rancho Santa Ana Bot