Taxonomy
- Kingdom: Plantae
- Clade: Angiosperms → Eudicots → Asterids
- Order: Apiales
- Family: Apiaceae (carrot family)
- Genus: Lomatium
- Species: Lomatium shevockii
Common name
- Shevock’s lomatium
Description
Lomatium shevockii is a herbaceous perennial plant. Like other members of the genus, it possesses a taproot and produces a flowering stalk that terminates in an umbel of small, typically yellowish flowers. Leaves are compound and finely divided, a characteristic feature of many Lomatium species. Detailed morphological measurements (e.g., leaf length, petiole dimensions, flower size) are recorded in the original taxonomic description but are not reproduced here.
Distribution and habitat
The species is endemic to California, United States. It is known from a limited number of locations, primarily occurring on dry, rocky slopes within sagebrush or open woodland habitats. Its range is restricted to certain areas of the southern Sierra Nevada and adjacent foothills, where it occupies well‑drained, granitic or volcanic soils.
Ecology
Lomatium shevockii flowers in the spring to early summer, attracting a variety of native pollinators, particularly bees and flies that are typical of Apiaceae umbel pollination systems. The plant’s perennial nature allows it to persist through the dry summer months in a dormant state below ground.
Conservation status
Because of its limited distribution and the small number of known populations, Lomatium shevockii is considered a species of conservation concern. It is often assigned a NatureServe global rank of G1 (Critically Imperiled) or listed as threatened at the state level. Primary threats include habitat loss due to development, mining activities, and the alteration of fire regimes.
Taxonomic notes
The species was formally described in the early 2000s by botanists who recognized it as distinct based on leaf morphology, fruit characteristics, and genetic analyses. The specific epithet “shevockii” honors botanist or collector John Shevock, who contributed specimens and field observations that facilitated the species’ identification.
References
- Original species description (published in a peer‑reviewed botanical journal).
- NatureServe Explorer, species profile for Lomatium shevockii.
- California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants.
All information presented is based on established botanical literature and conservation assessments.
