Past 2, 1920] FABACEAE: PSORALEAE 85 



84. Parosela frutescens (A. Gray) Vail; Rose, Contr. U. S. 

 Nat. Herb. 8: 303. 1905. 



Dalea frutescens A. Gray, Bost. Jour. Nat. Hist. 6: 175. 1850. 



A shrub, 3-10 dm. high; branches striate, glabrous, very sparingly glandular-punctate; 

 leaves spreading, 1-2.5 cm. long; stipules setaceous-subulate, 2 mm. long; petiole 5 mm. long; 

 rachis glabrous, slightly margined; leaflets 13-17, glaucous- verdigris, glabrous, minutely 

 glandular-punctate beneath, obovate, retuse, 3-8 mm. long; peduncles terminating the 

 branches, 1-5 cm. long, glabrous; spikes at first subcapitate, dense, about I cm. long; bracts 

 ovate, acute, conspicuously glandular-punctate ; calyx-tube turbinate, 3 mm. long, with con- 

 spicuous orange glands between the 10 strong ribs; lobes triangular, with short subulate tips, 

 villous-ciliate on the margins; corolla purple; blade of the banner cordate, nearly 5 mm. long, 

 the claw 3 mm. long; blades of the other petals 6 mm. long, the claws 1.5 mm. long; pod 

 broadly obliquely obovate, glabrous, conspicuously glandular-punctate. 



Type locality: On the Guadalupe, Texas. 



Distribution: Texas and New Mexico to Chihuahua and Nuevo Le6n. 



85. Parosela laxa Rydberg, sp. nov. 



A shrub, perhaps 1 m. high; branches glabrous, straw-colored, terete, ascending; leaves 

 1.5-2 cm. long, spreading; stipules minute, subulate; rachis slightly margined, on the upper 

 side glandular : punctate; stipels gland-like, acute; leaflets more or less cuneate, 4-5 mm. long, 

 slightly retuse, glabrous, glandular-dotted beneath; peduncels terminating the branches, 



1 cm. long; spikes slender and lax, 2-4 cm. long; bracts ovate, glabrous, conspicuously glandu- 

 lar-dotted, early deciduous; calyx glabrous, except the ciliolate margin; tube 3 mm. long, 

 strongly 10-ribbed, with a row of oblong, yellow glands in each interval; teeth broadly tri- 

 angular, with a short subulate tip, 0.5 mm. long and very broad, the sinuses between them 

 rounded; corolla rose-purple or with a yellowish banner; blade of the banner cordate, 4 mm. 

 long, the claw 3 mm. long; wings and keel-petals inserted near the middle of the staminal tube, 

 the blades of the wings 5 mm. long, those of the keel 5 mm. long. 



Tvpe collected in the vicinity of Devils River, Texas, October 16, 1913. Rose &• Fitch 17957 

 (herb. N. Y. Bot. Gard.). 

 Distribution: Texas. 



86. Parosela hospes Rose, Contr. U. S. Nat. Herb. 12: 272. 1909. 



A slender shrub, 2-3 m. high; stem divaricately branched, glabrous throughout, sparingly 

 minutely glandular-punctate, more or less purplish; leaves glabrous, 1-3 cm. long; stipules 5-7, 

 oblong to cuneate, retuse or rounded at the apex, 6-10 mm. long, glabrous, minutely but densely 

 glandular-punctate on both sides; petiolules 0.5 mm. long, somewhat thickened; spikes lax, 

 2-4 cm. long, terminating the branches or sub-opposite the leaves, 5-12-flowered, glabrous; 

 bracts ovate, 2 mm. long, caducous; pedicels very short; calyx-tube turbinate, 3.5-4 mm. long, 

 10-costate, glabrous or slightly puberulent when young; upper 4 lobes very short, broadly 

 triangular, densely ciliolate, the lowest one lanceolate, larger, half as long as the tube; petals 

 creamy-white to pale-purple; blade of the banner rounded-cordate, 3 mm. long, the claw about 



2 mm. long; wings and keel-petals similar, their blades 4—5 mm. long, the claws about 1 mm. 



long; pod included, obliquely ovate, silky-pubescent. 



Type locality: Sierra Madre. above Monterey, Nuevo Le6n. 

 Distribution: Coahuila and Nuevo Le6n. 



XX. Acutifoliae. Glabrous shrubs. Leaflets comparatively large, acute at each end. 

 Spikes lax; bracts ovate, minutely ciliolate, caducous. Flowers sessile. Calyx pubescent; 

 tube strongly 10-ribbed, obsoletely glandular in the intervals; lobes triangular-lanceolate, 

 acuminate, equaling the tube. Corolla at first yellowish, turning purple. Blade of the banner 

 rounded-ovate. Wings and keel-petals inserted near the base of the staminal tube, the blades 

 broadly obovate, with a large basal lobe, those of the keel-petals larger. Pod silky-villous. 



