Part 1, 1919] FABACEAE: PSORALEAE 61 



pedicels fully 1 mm. long, with a gland at the apex; calyx distinctly articulate to the pedicel, the 

 tube turbinate, 3.5-4 mm. long, 10-costate; lobes lanceolate, acute, as long as the tube; banner 

 usually white, sometimes purplish, the blade suborbicular, about 2 mm. long, the claw rather 

 short; wings and keel- petals obliquely broadly obovate, 4 mm. long, short-clawed, violet; pod 

 included' 



Type locality: Barranca of Tequila. Jalisco. 

 Distribution: Known only from the type locality. 



32. Parosela Greenmaniana Rose, Contr. U. S. Nat. Herb. 8: 303. 

 1905. 



Dalea unifoliata Rob. & Greenm. Proc. Am. Acad. 29: 383, in part. 1S94. 



A slender annual; stem glabrous, diffusely branched from the base, 2-4 dm. high, minutely 

 glandular-punctate, usually reddish; leaves 1-3-foliolate; stipules minute, subulate; petioles 

 about 5 mm. long; stipels minute; terminal leaflet suborbicular or rounded-oval, 5-15 mm. long, 

 strongly veined beneath, glabrous, with conspicuous marginal glands, and sparingly and min- 

 utely glandular-punctate beneath; lateral leaflets, if present, scarcely half as long as the ter- 

 minal one; petiolules about 0.5 mm. long; racemes terminating the branches, lax, including 

 the peduncle 4—6 cm. long; bracts lanceolate, acuminate, 1.5-2 mm. long, slightly ciliolate, 

 deciduous; pedicels 0.5-1 mm. long; flowers reflexed ; calyx distinctly articulate to the pedicel, 

 the tube turbinate, strongly 10-costate, about 2.5 mm. long; lobes ovate, shorter than the tube, 

 acute; petals purple; blade of the banner suborbicular, about 1.3 mm. long, and usually slightly 

 broader, the claw less than 1 mm. long; wings and keel-petals similar, the blades obliquely obo- 

 vate, fully 1.5 mm. long, the claw 0.5 mm. long; pod included, broadly and obliquely obovate, 

 with a minute beak. 



Type locality: Las Sedas, Oaxaca. 

 Distribution: Oaxaca. 



VII. Vetulae. Branched annuals, glabrous up to the inflorescence. Racemes elongate, 

 dense; bracts lanceolate, sparingly hairy, equaling the calyx; pedicels very short. Calyx hir- 

 sute; lobes lanceolate, longer than the tube. Corolla shorter than the calyx. Blade of the 

 banner rounded. Wings and keel-petals subequal, inserted near the upper end of the staminal 

 tube, with small basal lobes; keel-petals free. 



33. Parosela vetula (Brand.) Rose, Contr. U. S. Nat. Herb. 10: 

 105. 1906. 



Dalea vetula Brand. Proc. Calif. Acad. II. 2: 146. 1890. 



An erect annual; stem branched, about 3 dm. high, glabrous, sparingly glandular-dotted; 

 leaves 4-5 cm. long; stipules subulate, 2 mm. long; rachis glabrous; stipels minute; leaflets 

 21-25, obcordate, or the terminal ones orbicular or ovate, 2 mm. long; peduncles terminal, 1-2 

 cm. long; racemes rather dense, 2-5 cm. long, acute; flowers with very short pedicels; calyx- 

 tube broadly campanulate, 1.5 mm. long, silky-pilose; lobes lanceolate, 3.5 mm. long, pilose, 

 with 2 rows of small glands; corolla included in the calyx, purplish ; blade of the banner rounded, 

 somewhat cordate at the base, 1 mm. long, 1.5 mm. wide, the claw 1.5 mm. long; blades of wings 

 and keel-petals broadly obliquely obovate, with a small basal lobe, 2 mm. long, the claws 

 short; pod conspicuously glandular-dotted, pubescent. 



Type locality: Comondu, San Gregorio. Lower California. 

 Distribution: Known only from the type locality. 



VIII. Calycosae. Perennials, usually branched and woody at the base, or P. Berlandieri , 

 shrubby. Leaflets small, usually many. Racemes dense; bracts narrow; pedicels short. 

 Calyx pubescent; lobes lanceolate, longer than the tube. Corolla longer than the calyx. 

 Blade of the banner cordate or reniform. Keel-petals much longer than the wings, inserted 

 below the middle of the staminal tube. 



