familyRosaceae
subfamilyRosaceae subfam. Rosoideae
genusHorkelia
sectionHorkelia sect. Tridentatae
speciesHorkelia daucifolia
Horkelia daucifolia var. indicta
Novon 17: 319. 2007.
Common names: Jepson’s horkelia
Conservation concernEndemic
Basionym: Potentilla daucifolia var. indicta Jepson Man. Fl. Pl. Calif., 493. 1925
Revision as of 23:11, 16 December 2019 by FNA>Volume Importer
Plants rosette-forming to tufted. Basal leaves green, 7–11 cm; leaflets 5–10(–15) mm, lobes (2–)5–15, linear, 0.4–1 mm wide. Pedicels 5–10(–20) mm, not puberulent, minutely glandular. Flowers: petals broadly obovate to obcordate, 5–7.5 × 4–6 mm; filaments 2–3 mm.
Phenology: Flowering summer.
Habitat: Vernally saturated openings in oak-conifer woodlands, mainly on clay soil
Elevation: 200–700 m
Discussion
Of conservation concern.
Variety indicta was known only from the type in Tehama County until rediscovered in 1990 in western Shasta County, confirming that this is a distinct variety in the forested hills rimming the northern Sacramento Valley (B. Ertter and J. L. Reveal 2007). One other historic collection of Horkelia daucifolia from Shasta County (Montgomery Creek, Smith s.n., CAS) is more similar to var. daucifolia.
Selected References
None.
Lower Taxa
None.