Claytonia perfoliata subsp. mexicana

Leaves: blades usually green, epidermal gas pockets usually absent; basal leaf rosettes suberect to flattened, 2-30 cm, blade deltate, apex apiculate drip tip, mucro 1-2 mm; cauline leaves perfoliate, blade 1-10 cm diam., margins notched or deeply cleft, apex often with twin apiculate, curved tips. Seeds 2-3 mm. 2n = 12, 24, 60.

Flowering Feb-Apr. Rockslides, landslides, along animal trails; 0-2000 m; Ariz., Calif., N.Mex.; Mexico; Central America (Guatemala).

In the Channel Islands and Arizona, flowering apparently follows spring rains.