Pediomelum brachypus

Pediomelum brachypus Rydberg, sp. nov
A perennial, with a fusiform root; stem branched at the base, decumbent, strigose, 1-3 dm. long; leaves pinnately 3-foliolate; stipules ovate, herbaceous, 3-5 mm. long; petioles less than 1 cm. long; leaflets rhombic-ovate or rhombic-lanceolate, glabrous above, sparingly strigose beneath, rarely 1.5 cm. long, acute; peduncles 2-4 cm. long; spikes few-flowered, subcapitate; calyx sparingly strigose; tube about 2 mm. long; lobes nearly equal, 2 mm. long, lanceolate, acute; corolla 6 mm. long, purplish, otherwise as in P. rhombijolium; pod strigose, the body ovate, 4 mm. long, the beak of about the same length, hooked at the apex.
Type collected at Los Naranjos. Oaxaca, August, 1908. Purpus 3049 (herb. N. Y. Bot. Gard.).