106 NORTH AMERICAN FLORA [Volume 24 



XXXV. Lasiostachyae. Glabrous or glabrate much branched shrubs. Leaflets of 

 several pairs, small. Spikes rather dense, mostly oblong; bracts deciduous. Calyx-tube 

 densely silky; lobes filiform from a broader base, plumose, longer than the tube (except in the 

 first species). Corolla rose-purple to nearly white. Wings and keel-petals inserted far below 

 the middle of the staminal tube, the keel longer than the wings. Pod more or less pubescent. 



146. Parosela Smithii Rydberg, sp. nov. 



A shrub, about 1 m. high or more; stem glabrous, somewhat glandular-tubercled, often 

 chestnut-brown; branches numerous, ascending; leaves 3-7 cm. long, spreading; stipules 

 subulate-setaceous, 2-3 mm. long; rachis glabrous; stipels conic, gland-like; leaflets 13-21, 

 oblong, obtuse, 5-8 mm. long, glabrous on both sides, conspicuously glandular-dotted beneath; 

 spikes terminating the branches, short, dense, 1.5-4 cm. long, fully 1 cm. thick; rachis densely 

 velutinous; bracts deciduous, lanceolate, silky and sparingly glandular-dotted; calyx- tube 

 campanulate, 2.5 mm. long, densely silky and with a row of glands between the ribs; lobes 

 subulate, from a broad base, 2 mm. long; corolla rose-purple; blade of the banner round-reni- 

 form, 3 mm. long, 4 mm. broad, the claw 2.5 mm. long; blades of the wings 4—4.5 mm. long, 

 those of the keel-petals broader, 5 mm. long, the claws of both about 2 mm. long; pod densely 

 silky above. 



Type collected in Sierra de San Felipe, Oaxaca, November 19, 1894, Charles L. Smith 343 (U. 

 S. Nat. Herb. no. 3 J 2832). 



Distribution: Oaxaca to Hidalgo(?). 



147. Parosela glabrescens Rydberg, sp. nov. 



A shrub, at least 5 dm. high; stem glabrous or slightly pubescent when young; leaves 

 ascending, 2-3 cm. long; stipules subulate, about 2 mm. long; rachis sparingly pubescent 

 when young, soon glabrate; stipels gland-like; leaflets 15-21, elliptic, acute at both ends, 

 sparingly pilose when young, conspicuously glandular-dotted beneath, channeled above; 

 peduncles terminating the branches, 2-4 cm. long; spikes dense, 1.5-3 cm. long, fully 1 cm. 

 thick; bracts narrowly lanceolate, acuminate, densely silky-pilose, longer than the calyx; 

 calyx-tube campanulate, 2.5 mm. long, densely silky-pilose, obscurely glandular-dotted be- 

 tween the 10 ribs; lobes subulate-filiform from a lance-triangular base, fully equaling the tube; 

 corolla light-rose or almost white, the petals usually with a conspicuous gland near the apex; 

 blade of the banner cordate, 3 mm. long, the claw about the same length; blades of the wings 

 nearly 5 mm. long, those of the keel-petals broader and 6 mm. long. 



Type collected in the region of San Luis Potosi, 1878, Parry &■ Palmer 150 (U. S. Nat. Herb. 

 no. 24371). 



Distribution: San Luis Potosi. 



148. Parosela lasiostachya (Benth.) Rose, Contr. U. S. Nat. 

 Herb. 10: 107. 1906. 



Dalea lasiostachya Benth. PI. Hartw. 11. IS39. 



A shrub, 1 m. high or more; branches glabrous, reddish, sparingly glandular-dotted, 

 in age brown; leaves 1.5-3 cm. long; stipules subulate-setaceous, 3 mm. long; rachis 

 glabrous and glandular-dotted, margined; stipels gland-like; leaflets 13-17, oblong or linear- 

 oblong, with involute margins, glabrous on both sides, minutely glandular-dotted beneath, 

 acute, 3-6 mm. long; spikes terminal, cylindric, 2-4 cm. long, 1.5 cm. thick; peduncles 3-5 cm. 

 long; rachis densely villous; bracts narrowly lanceolate, silky- villous, nearly equaling the calyx, 

 caducous; calyx-tube turbinate, silky-villous, 10-ribbed, with a row of small glands between 

 the rows, 3 mm. long; lobes filiform from a lance-triangular base, 4—5 mm. long; corolla rose 

 or purple; blade of the banner rhombic-cordate, 4 mm. long, retuse, the claw 3 mm. long; 

 blades of the wings 4 mm. long, those of the keel-petals 5 mm. long; pod densely villous. 



Type locality: Not given [but Graham collected near City of Mexico, Tlalpuxahua, and Real 

 del Monte, probably the first named locality]. 



Distribution: State of Mexico, Federal District, and Puebla. 



