Lathyrus lanszwertii var. leucanthus
Vasc. Pl. Wyoming, 171, 297. 1988.
Endemic
Basionym: Lathyrus leucanthus Rydberg Bull. Torrey Bot. Club 28: 37. 1901
Synonyms: L. arizonicus Britton L. lanszwertii var. arizonicus (Britton) S. L. Welsh
Treatment appears in FNA Volume 11.
Stems erect, 1–3 dm. Leaves 2–3 cm, terminating in simple bristle, less than 1 cm; leaflets 4–6, blades lanceolate and 25–50 × 5–15 mm, or linear and 35–70 × 2–5 mm. Inflorescences 3–5 cm. Flowers 10–15 mm, corolla white. 2n = 28.
Phenology: Flowering Apr–Jun.
Habitat: In sagebrush, openings in pine, oak, and aspen woodlands.
Elevation: 2000–3200 m.
Distribution
Ariz., Colo., N.Mex., Utah, Wyo.
Discussion
Variety leucanthus includes two distinct sympatric races: one with lanceolate leaflets (= L. leucanthus), and one with linear leaflets (= L. arizonicus Britton).
Selected References
None.
Lower Taxa
None.