Horkelia clevelandii

(Greene) Rydberg

Bull Torrey Bot. Club 25: 54. 1898.

Basionym: Potentilla clevelandii Greene Pittonia 1: 102. 1887 (as clevelandi)
Synonyms: Horkelia bolanderi subsp. clevelandii (Greene) D. D. Keck P. bolanderi var. clevelandii (Greene) Jepson
Treatment appears in FNA Volume 9. Treatment on page 252. Mentioned on page 250, 251, 253.

Discussion

Varieties 2 (1 in the flora).

The component of Horkelia clevelandii occurring in the Sierra San Pedro Mártir and most of the Sierra Juarez of northern Baja California, Mexico, is var. brevibracteata (Wiggins) Ertter & Reveal. It differs from var. clevelandii in tending to have a more compact and matted habit, shorter stems (1–3 dm), more numerous (11–16) pairs of smaller (4–8 mm) leaflets, shorter epicalyx bractlets (1.5–2 mm), and deeper hypanthia (2–2.5 mm).

Selected References

None.