Diphysa humilis Oerst.

Diphysa humilis Oerst.; Benth. & Oerst. Vidensk
Meddel. 1853: 12. 1853.
*
A low shrub, with horizontal stem ; branches 1 .5-3 dm. high, the floral ones short, glandularpuberulent and sparingly hairy; stipules caducous; leaves 4-7 cm. long; leaflets 5-9, oval to broadly oblong, about 1 cm. long, rounded or obtuse at the apex, 2-2.5 cm. long; racemes 3-5 cm. long; peduncles and pedicels glandular-puberulent; pedicels about 6 mm. long; bracts and bractlets ovate, strongly striate; calyx sparingly glandular, especially on the margins of the lobes, the tube with the hypanthium 5 mm. long, the uppermost two lobes ovate, obtuse, 2 mm. long, the lowest lobe lanceolate, acute, somewhat longer; all pellucid-punctate, venose; corolla yellow, 10 mm. long; pod 3-4 cm. long, puberulent and glandular, somewhat quadrangular in cross-section, the sutures carinate.
Type locality: At the base of Vulcan Rincon, province of Guanacaste, Costa Rica. Distribution: Costa Rica.