Difference between revisions of "Horkeliella purpurascens"

(S. Watson) Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 22: 282. 1908.

Common names: Kern Plateau horkeliella or false horkelia
EndemicSelected by author to be illustrated
Basionym: Horkelia purpurascens S. Watson Proc. Amer. Acad. Arts 11: 148. 1876
Synonyms: Ivesia purpurascens (S. Watson) D. D. Keck Potentilla purpurascens (S. Watson) Greene
Treatment appears in FNA Volume 9. Treatment on page 271. Mentioned on page 272.
FNA>Volume Importer
FNA>Volume Importer
(No difference)

Revision as of 20:36, 24 September 2019

Plants green or grayish green to gray, non-glandular hairs sparse to dense, often obscuring stipitate-glandular ones. Basal leaves (5–)7–17(–20) cm; petiole 1–5 cm; leaflets 15–30(–35) per side, (2–)3–10(–20) mm, divided into 3–6 ultimate segments, hirsute (sometimes densely so) and villous (especially marginally), infrequently viscid-stipitate-glandular, or nearly glabrous except for villous tuft at apex. Cauline leaves 2–4, 2–10 cm. Inflorescences ± open. Pedicels (1–)2–10(–15) mm. Flowers 10–15 mm diam., epicalyx bractlets linear to narrowly ovate, 1.5–3 mm; sepals 3–6 mm, hirsute, sparsely villous, sometimes minutely glandular or stipitate-glandular; petals oblanceolate to narrowly spatulate or oblong, 3–7 mm; filaments 1–2.5 mm, filament opposite center of sepal shorter than those on either side, anthers 0.5–0.8(–1) mm; styles 2.5–4 mm.


Phenology: Flowering summer.
Habitat: Dry granitic meadows at edges of conifer woodlands
Elevation: 1400–2900 m

Discussion

Typical Horkeliella purpurascens occurs on the Kern Plateau on the western slope of the southern Sierra Nevada in Kern and Tulare counties. More densely hairy populations farther south in the Piute, Scodie, and Tehachapi mountains of Kern County tend to have more congested inflorescences, shorter leaves, and fewer carpels; they may merit taxonomic recognition.

Selected References

None.

Lower Taxa

None.
... more about "Horkeliella purpurascens"
Barbara Ertter +  and James L. Reveal +
(S. Watson) Rydberg in N. L. Britton et al. +
Horkelia purpurascens +
Kern Plateau horkeliella or false horkelia +
1400–2900 m +
Dry granitic meadows at edges of conifer woodlands +
Flowering summer. +
in N. L. Britton et al., N. Amer. Fl. +
Endemic +  and Selected by author to be illustrated +
Ivesia purpurascens +  and Potentilla purpurascens +
Horkeliella purpurascens +
Horkeliella +
species +