Part 2, 1920] FAB ACEAE : PSORALEAE 73 



48. Parosela Lagopus Cav. Descr. PI. 187. 1802. 



Psoralea Lagopus Cav. Ic. 1: 59. 1791. 



Dalea Lagopus Willd. Sp. PI. 3: 1340. 1803. 



Dalea elata Mart. & Gal. Bull. Acad. Brux. 10 ; : 41. 1843. Not D. data H. & A. 1840. 



Dalea lagopoda St. -Lag. Ann. Soc. Bot. Lyon 7: 124. 1880. 



A stout annual; stem 5-10 dm. high, glabrous, somewhat glandular-warty, branched above; 

 leaves 4-10 cm. long; stipules subulate, 4-6 mm. long; petiole about 1 cm. long; rachis margined, 

 glabrous, sparingly and minutely glandular-dotted; stipels gland-like; leaflets 21-51, oblong, 

 retuse or obtuse, 4-8 mm. long, glabrous on both sides, glandular-dotted beneath; peduncles 

 terminating the branches, 5-15 cm. long; spikes dense, 2-10 cm. long, 12-14 mm. thick; bracts 

 lanceolate, acuminate, glabrous, membranous, deciduous, equaling the calyx; calyx-tube cam- 

 panulate, 10-ribbed, glabrous, with conspicuous yellow glands between the ribs; lobes with a 

 triangular base and long filiform silky-pilose tips equaling the tube; corolla blue; blade of the 

 banner broadly oval, subcordate or truncate at the base, 4 mm. long, the claw 2 mm. long; 

 blades of the wings and keel-petals 3-4 mm. long, with obscure basal lobes, the claws 1 mm. 

 long; keel-petals soon distinct; pod minutely glandular-dotted above, ciliate along the back, 

 otherwise glabrous. 



Type locality: Mexico. 



Distribution: Veracruz to Costa Rica. 



Illustration: Cav. Ic. pi. 86; G. Don, Gen. Hist. 2: f. 36. 



49. Parosela exserta Rydberg, sp. nov. 



A low annual; stem about 2 dm. high, glabrous, striate, sparingly glandular-dotted; 

 leaves 3-4 c m. long; stipules subulate, minute; rachis glabrous; stipels conic, gland-like; leaf- 

 lets 13-17, oblong, 5—8 mm. long, glabrous, minutely glandular beneath; peduncles 5-8 cm. 

 long; spikes dense, 3-6 cm. long, 12 mm. thick; bracts lanceolate, acuminate, deciduous, 

 glabrous, glandular-dotted on the upper half; calyx-tube 4 mm. long, campanulate, mem- 

 branous, glabrous, with a row of conspicuous oblong glands between the 10 veins; lobes fili- 

 form from a lanceolate base, plumose-pilose, 3 mm. long; corolla purplish-blue; blade of the 

 banner cordate, 3.5 mm. long, the claw 2.5 mm. long; blades of the wings and keel-petals with 

 the basal lobe rather poorly developed, 2 mm. long, the claws about 0.5 mm. long; pod mem- 

 branous, slightly pilose and glandular at the summit. 



Type collected at Colima, February 27 and 28, 1891, Edward Palmer 1312 (U. S. Nat. Herb. 

 no. 208865). 



XI. Urceolatae. Glabrous annuals of the habit of section XIII. Leaflets many, small, 

 oblong or oval. Spikes dense and short. Flowers sessile ; bracts lanceolate or ovate-lanceolate, 

 not exceeding the calyx. Calyx-tube campanulate to urceolate, with 10 blackish ribs, split 

 on the back to near the base; lobes ovate with subulate tips. Banner blue or violet, the blade 

 orbicular to cordate. Wings (if present) inserted near the middle of the staminal tube, the 

 blades elliptic or oblong, very short-clawed. Keel-petals wanting. Stamens 7 or 8. (Ap- 

 proaching the annual species of Petaloslemon in habit and in the small number of stamens.) 



50. Parosela urceolata (Greene) Standley, Contr. U. S. Nat. Herb. 

 13: 194. 1910. 

 Dalea urceolala Greene, Leaflets 1: 199. 1905. 



A slender glabrous annual; stem branched from the base, 1-1.5 dm. high; leaves 2-4 cm. 

 long; stipules setaceous, 2 mm. long; petiole about 3 mm. long; rachis slightly margined, 

 glabrous; stipels minute, gland-like; leaflets 11-21, oblong to cuneate-oblong, emarginate, 

 3-5 mm. long, glabrous, sparingly and minutely glandular-dotted beneath; peduncles at the 

 ends of the branches, 1-3 cm. long; spikes dense, 1-2 cm. long, 1 cm. thick; bracts lance-ovate, 

 slightly membranous-margined, acuminate; calyx-tube ellipsoid-campanulate, 3-3.5 mm. 

 long; lobes triangular, acuminate, ciliate, half as long as the tube; corolla light-blue; blade of 

 the banner rounded-cordate, 2 mm. long, nearly equaling the claw; blades of the wings oblong, 

 1.5 mm. long, the claws very short; pod obovate, glabrous and with a few glands, ciliate above. 



Type locality: Mogollon Mountains, New Mexico. 



Distribution: Known only from the type locality. 



