Ranunculus triternatus A. Gray

C. L. Hitchcock et al. (1955-1969, vol. 2) considered the name Ranunculus triternatus A. Gray to be an illegitemate homonym and used the illegitimate (superfluous) name R . reconditus A. Nelson & J. F. Macbride for this species. The name Ranunculus triternatus Poiret was not validly published (not accepted by Poiret) and does not invalidate R . triternatus A. Gray.

Stems prostrate or ascending, 5-20 cm, glabrous, each with 1-6 flowers. Roots cylindric, 2-3 mm thick. Basal leaves persistent, blades rhombic to deltate or reniform in outline, 3-4×-dissected, 1.1-3.4 × 2-3.1 cm, segments linear, base obtuse, margins crenate, apices of segments narrowly rounded. Flowers: pedicels glabrous; receptacle short-pubescent; sepals 4-8 × 2-5 mm, abaxially glabrous or nearly so; petals 5, 6-15 × 4-10 mm; nectary scale glabrous. Heads of achenes depressed-globose, 4-6 × 5-8 mm; achenes 1.8-2.2 × 1.2-1.8 mm, finely pubescent; beak subulate, straight, 0.8-1.5 mm.

Idaho, Nev., Oreg., Wash.

Flowering spring (Apr-May).

Grassland or sagebrush; of conservation concern; 900-1700m.

Ranunculus glaberrimus Hooker var. reconditus L. D. Benson