Comprehensive Description
provided by North American Flora
Pediomelum trinervatum Rydberg, sp. nov
Psoralea esculenta Torr. Bot. Mex. Bound. Surv. 51. 1859. Not P. esculenta Pursh, 1814.
A perennial, with a fusiform, tuberous, farinaceous root, the tuberous portion about 5 cm. long, 2 cm. thick; stem above ground very short, less than 5 cm. long; leaves digitately 5-foliolate; stipules ovate or lanceolate, acuminate, 5-10 mm. long; petioles about 1 cm. long, strigose; leaflets obovate, cuspidate, 2-3 cm. long, often more or less undulate-crisp on the margins, strigose on both sides; peduncles 5-7 cm. long; spikes about 3 cm. long, dense; bracts lanceolate, acute, about 5 mm. long; calyx strigose-canescent; tube 4 mm. long; upper 4 calyx-lobes subulate, nearly 1 cm. long, attenuate, the lowest one oblanceolate, 12-15 mm. long, short-acuminate or acute, conspicuously 3-ribbed, at least in age; corolla blue, 15 mm. long; banner oblong; body of the fruit ovoid, 7 mm. long, the beak flat, attenuate, 12-14 mm. long; seeds dull-brown,
6 mm. long, strongly reticulate.
Type collected in the vicinity of Chihuahua, June 5-10, 1908, Edward Palmer 356 (herb. N. Y. Bot. Gard.).
Distribution: New Mexico and Chihuahua.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY