Trifolium rollinsii
Madroño 21: 453, fig. 2. 1972.
Herbs perennial, 5–20 cm, glabrous. Stems ascending, cespitose, branched. Leaves mostly basal, palmate; stipules ovate, 1 cm, margins entire, apex blunt; petiole 2–6 cm; petiolules to 1 mm; leaflets 3, blades obovate or rhombic, 0.6–1.3 × 0.6–1 cm, base cuneate, veins prominent, margins denticulate, apex rounded or retuse, apiculate, surfaces pale abaxially, glabrous. Peduncles curved distally proximal to flowers, 3–9 cm. Inflorescences terminal or axillary, 8–15-flowered, appearing turned to one side, obconic, 1.3–1.8 × 1.1–2.5 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally; involucres absent. Pedicels reflexed, 1–1.2 mm; bracteoles minute. Flowers 10–13 mm; calyx purple, campanulate, 5–6 mm, glabrous, veins 10, tube 3.5 mm, lobes equal, subulate, 2 mm, orifice open; corolla purple, often with white tips, 15 mm, banner obovate, 11–13 × 5–6 mm, apex flared. Legumes not seen. Seeds not seen.
Phenology: Flowering Jun–Aug.
Habitat: Wind-swept alpine areas.
Elevation: 3000–3100 m.
Discussion
Trifolium rollinsii is known from the Toiyabe Range in Lander and Nye counties in central Nevada.
Selected References
None.