Lewisia cotyledon var. howellii
Fl. Calif. 1: 479. 1915.
Basionym: Calandrinia howellii S. Watson Proc. Amer. Acad. Arts 23: 262. 1888
Synonyms: Lewisia howellii (S. Watson) B. L. Robinson Oreobroma howellii (S. Watson) Howell
Treatment appears in FNA Volume 4. Treatment on page 480.
Basal leaf-blades: margins strongly crisped. Petals 12–20 mm. 2n = 28.
Phenology: Flowering mid-late spring.
Habitat: Rocky crevices and substrates, sometimes in open woodlands
Elevation: 100-400 m
Variety howellii is more or less peripheral in distribution to var. cotyledon and generally is found at lower elevations.
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