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FNA | Family List | FNA Vol. 9 | Rosaceae | Horkelia

7. Horkelia clevelandii (Greene) Rydberg, Bull Torrey Bot. Club. 25: 54. 1898.

Potentilla clevelandii Greene, Pittonia 1: 102. 1887 (as clevelandi); Horkelia bolanderi A. Gray subsp. clevelandii (Greene) D. D. Keck; P. bolanderi (A. Gray) Greene var. clevelandii (Greene) Jepson

Varieties 2 (1 in the flora): California, nw Mexico.

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).

Lower Taxon


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