Basal leaf blades linear, 1-15 × 0.5-1 cm. Cauline leaves distinct; blade linear to trullate, 1-5 × 0.5-1 cm, or deeply cleft into 2 ovate segments. Flowers 3-5 mm diam., petals white or pink. 2n = 24, 36.

Flowering Mar-May. Decomposed granite or sandstone; 100-2000 m; Ariz., Calif., Nev.; Mexico (Baja California).

LEAVES: basal leaves linear to narrowly oblanceolate, 1.9-9.1 cm long, 0.1-0.5 cm wide; cauline leaves free.

FLOWERS: 3-9; sepals 1.9-2.5 mm long; petals 2.8-5 mm long, white or pink.

NOTES: Decomposed granite or sandstone, nw corner of AZ: Mohave Co.; 1200-1550 m (4000-5100 ft); Apr; CA, NV; Mex. This taxon intergrades with subspecies parviflora (Miller 2003).

SEEDS: 1.3-1.4 mm long. 2n = 24, 36.

SYNONYMS: [Montia spathulata var. viridis Davidson, M. spathulata var. tenuifolia (Torr. & A.Gray) Munz].

REFERENCES: Allison Bair, Marissa Howe, Daniela Roth, Robin Taylor, Tina Ayers, and Robert W. Kiger., 2006, Vascular Plants of Arizona: Portulacaceae. CANOTIA 2(1): 1-22.