Part 2, 1920] FABACEAE: PSORALEAE 79 



glandless; stipels minute, gland-like; leaflets 3-9, oblong or oblong-cuneate, 4-10 mm. long, 

 glabrous on both sides, dark-green above, paler beneath, apparently glandless; peduncles 

 terminal, 1-3 em. long; spikes dense, 2-3 cm. long, 8 mm. thick; bracts ovate, ciliate, almost 

 black, short-acuminate; calyx-tube campanulate, 2 mm. long, densely pilose, with 10 dark 

 veins; lobes filiform, with a triangular base, pilose-plumose; corolla blue; blade of the banner 

 round-oval, 2.5 mm. long, the claw 2 mm. long; wings and keel-petals inserted towards the 

 base of the staminal tube; blades of the wings 2 mm. long, those of the keel-petals more oblong 

 and with less distinct basal lobes. 



Type locality: Cultivated specimen from American seeds. 

 Distribution: State of Mexico. 



XIV. Flavae. Tall annuals, sometimes woody at the base, branched above. Leaflets 

 many, oblong or elliptic, minutely glandular-dotted beneath. Spikes dense, cylindric, pedun- 

 cled, opposite the leaves; bracts lanceolate, tardily deciduous, pubescent. Calyx- tube very 

 strongly ribbed, with conspicuous glands in the intervals; lobes subulate, equaling the tube. 

 Corolla ochroleucous, inconspicuous. Blade of the banner small, suborbicular. Blades of 

 the other petals obliquely oblong, short-clawed. Pod villous above. 



67. Parosela flava (Mart. & Gal.) Rydberg. 



Dalea flava Mart. & Gal. Bull. Acad. Brux. 10 5 : 40. 1843. 

 Parosela pauciflora Rose, Contr. U. S. Nat. Herb. 10: 106. 1906. 



An annual or perennial; stem more or less short- villous, 3-12 dm. high, sometimes woody 

 below, with ascending branches, striate or angled; leaves 2-4 cm. long; stipules subulate, 

 2-3 mm. long; petiole 2-5 mm. long; rachis short- villous; stipels obsolete; leaflets 15-25, ob- 

 long, elliptic, or obovate, 4-S mm. long, villous on both sides, conspicuously glandular-dotted 

 beneath; peduncles terminating the branches, 1-2 cm. long; spikes short, cylindric, dense, 

 2-4 cm. long; bracts lanceolate, tardily deciduous, villous, acuminate, longer than the calyx; 

 calyx-tube turbinate, 2.5 mm. long, sparingly silky, strongly 10-ribbed, with conspicuous 

 yellow glands between the ribs; lobes subulate, silky-plumose, equaling the tube; corolla ochro- 

 leucous; blade of the banner orbicular, nearly 1.5 mm. long. 2 mm. wide, the claw 2.5 mm. long; 

 blades of the wings and keel-petals broadly oblong, oblique, with a rounded basal lobe, 2 mm. 

 long, the claws less than 0.5 mm. long; pod villous above. 



Type locality: Zacuapan, Veracruz. 



Distribution: Sonora and Jalisco to Veracruz and Puebla. 



68. Parosela elata (H. & A.) Rydberg. 



Dalea elala H. & A. Bot. Beech. Voy. 416. 1S40. 



A tall annual herb; stem 5-10 dm. high, branched above, glabrous, striate, angled; leaves 

 4—7 cm. long; stipules subulate, small; leaflets 13-21, ellipft:, S— 12 mm. long, glabrous, paler 

 and minutely glandular-dotted beneath; peduncles opposite the leaves, 2-4 cm. long; spikes 

 dense, cylindric, 2-5 cm. long; bracts lanceolate, acuminate, villous, longer than the calyx; 

 calyx-tube turbinate, 2.5 mm. long, glossy and glabrous or with a few scattered hairs, very 

 strongly 10-ribbed, with a row of very conspicuous dark-brown oblong glands in each interval; 

 lobes subulate, silky-plumose, equaling the tube; corolla ochroleucous; blade of the banner 

 suborbicular, about 1-5 mm. long, shorter than the claw; blades of the other petals obliquely 

 oblong, 2 mm. long, short-clawed; pod villous above. 



Type locality: Acapulco. 

 Distribution: Type locality and vicinity. 



XV. Similes. Tall annuals, silky-canesceut throughout. Leaflets numerous, small. 

 Spikes on terminal peduncles, short and dense; bracts densely villous, longer than the calyx. 

 Calyx-tube silky-villous, 10-ribbed, not conspicuously glandular; lobes longer than the tube. 

 Corolla white. Blade of the banner orbicular. Wings and keel-petals inserted above the 

 middle of the staminal tube, the blades elliptic-oblong, short-clawed. Pod villous above. 



