|Kelso Creek Monkey-flower|
|Heckard & Bacig.|
|Terry Higgins and Naomi S. Fraga|
The following Participating Institutions are custodians for this species in the CPC National Collection:
Rancho Santa Ana Botanic Garden
The conservation of Mimulus shevockii is fully sponsored.
Terry Higgins and Naomi S. Fraga contributed to this Plant Profile.
Mimulus shevockii (Kelson Creek monkeyflower) is a member of the lopseed family (Phrymaceae). It is an annual herb that is only known from within the Kern River drainage in the southern sierra Nevada of Kern County, California.
Mimulus shevockii blooms from March to May and fruits from April to June. Plants of this species have a very distinctive flower that has a maroon-purple upper lip, and a yellow lower lip. In years of ample rain this species can form carpets on the desert floor, but can be difficult to find in drier years.
Distribution & Occurrence
Mimulus shevockii is a winter annual with a highly restricted distribution. However, the habitat requirements of M. shevockii do not appear to be stringent. Populations occur in Joshua tree or California juniper woodland habitats ranging from 2700 to 4400 ft (825-1340 m) in elevation (CNDDB 2011). The mean annual precipitation in this region is 20 cm (8 in) (Heckard and Bacigalupi 1986). The substrate is typically loamy, course sands of granitic origin on alluvial fans of dry streamlets (BLM 2004; Heckard and Bacigalupi 1986). However, the Cyrus Canyon population grows on finer soils developed from metasedimentary rocks (Heckard and Bacigalupi 1986).
|There are currently 11 known occurrences of Mimulus shevockii.|
Conservation, Ecology & Research
Habitat loss due to water inundation
Pollination Biology of Mimulus shevockii (Naomi Fraga, unpublished)
Continue surveys on public land identified as potential habitat. Document any spillover impacts to public lands from private lands.
BLM will make a determination of regional rangeland health standards on public lands in the Rudnick Common Allotment within five years of Plan approval.
Adaptive management prescriptions are:
Adjust boundaries of conservation area based on survey results.
Change route designation as necessary to protect occupied habitat.
Adjustments in grazing practices and Allotment Management Plans in Kelso Valley will be made as necessary based on results of the rangeland health determinations.
Pursue land purchase or exchange.
Fence BLM/private property boundaries if spillover impacts are evident.
Lands trusts such as the Kern River Preserve, Kern Valley Heritage Foundation, or the Mojave Desert Land Trust may also look into acquiring land that is currently zoned for development on which M. shevockii occurs.
Life history assessment: Study breeding systems, pollinators, and investigate germination requirements by conducting germination trials.
Genetic study: Investigate the genetic structure of the species.
BLM (Bureau of Land Management) . (2004). Kelso Creek monkeyflower . [PDF]. www.blm.gov/ca/pdfs/cdd_pdfs/kelso1.PDF. Accessed: 2004.
California Natural Diversity Database (CNDDB). . (2011). . RareFind 4.0. Sacramento, CA: California Department of Fish and Game.. [ ]. https://nrmsecure.dfg.ca.gov/cnddb/view/que