Part 2, 1920] FABACEAE: PSORALEAE 93 



108. Parosela lanata (Spreng.) Britton, Mem. Torrey Club 



5: 196. 1894. 



Dalea lanata Spreng. Syst. Veg. 3: 327. 1826. 



Dalea lanuginosa Nutt.; T. & G. Fl. N. Am. 1: 307. 1838. 



A perennial, with a woody long root; stems several, decumbent, 3-5 dm. long, densely 

 and shortly villous-tomentose; leaves spreading, 2-3 em. long; stipules subulate, 3-5 mm. long; 

 rachis villous-tomentose; stipels represented by glands; leaflets 9-13, obovate, cuneate, or 

 rarely oblong, usually emarginate, 4-12 mm. long, densely short-villous ; peduncles opposite 

 leaves, 1-3 em. long; spikes elongate, in fruit lax, 3-8 cm. long; bracts broadly obovate, abruptly 

 acuminate, equaling the calyx, persistent, villous and with a few conspicuous glands on the 

 back; calyx densely villous; tube turbinate, membranous, 2.5 mm. long; lobes lanceolate, 

 acuminate, shorter than the tube; corolla blood-red to purple, rarely white; blade of the banner 

 rounded-cordate, with a deep sinus, more or less cucullate, 3 mm. long, the claw 2 mm. long; 

 blades of the wings oval with a rounded basal lobe, 3 mm. long, those of the keel-petals broadly 

 obliquely obovate, with a smaller basal lobe, 3 mm. long, the claws of both 1 mm. long; pod 

 half-reniform, finely villous. 



Type locality: On Arkansas River, North America. 



Distribution: Kansas and Colorado to Arkansas; Chihuahua. 



Illustrations: Britt. & Brown, 111. Fl./. 2015; ed. 2, f. 2508. 



109. Parosela terminalis (M. E. Jones) A. Heller, Muhlenbergia 

 6:96. 1910. 



Dalea terminalis M. E. Jones. Contr. W. Bot. 12:8. 1908. 



A perennial, with a deep woody root; stems several, divaricately branched, prostrate, 

 3-6 dm. long, densely and softly short-villous; leaves 2-3 cm. long; stipules minute, caducous; 

 rachis densely short-villous; stipels gland-like; leaflets 7-13, cuneate-obovate, retuse, thick, 

 5-8 mm. long, densely short-villous on both sides, conspicuously glandular-dotted beneath; 

 peduncles opposite the leaves and terminal, 1-3 cm. long; spikes elongate and lax in fruit, 

 4-8 cm. long; bracts rhombic-obovate, very villous, caudate-acuminate, with a few conspicuous 

 glands; calyx-tube turbinate, slightly ribbed, membranous, finely puberulent when young, 

 soon glabrous and shining; lobes triangular, villous, scarcely half as long as the tube; corolla 

 deep red-purple; blade of the banner rounded-cordate, 2.5-3 mm. long, the claw 1-2 mm. long; 

 blades of the other petals 2.5-3 mm. long, those of the keel-petals slightly broader, the claws 

 less than 1 mm. long, pod semi-reniform, short-villous. 



Type locality: El Paso, Texas. 



Distribution: Texas to southern Utah, Arizona, and Chihuahua. 



110. Parosela subvillosa Rydberg, sp. nov. 



A perennial, with a slender deep yellow root; stems divaricately branched, spreading, 

 3-5 dm. long, sparingly villous and sparingly glandular-dotted; leaves about 2 cm. long; stipules 

 subulate, 2 mm. long; rachis villous, with scattered yellow glands; stipels gland-like; leaflets 

 9-11, cuneate-obovate, retuse, 4—7 mm. long, sparingly villous on both sides, conspicuously 

 glandular-dotted beneath; peduncles opposite the leaves, 1-3 cm. long; spikes elongate, lax, 

 in fruit 5-10 cm. long; bracts rhombic-obovate, abruptly acuminate, sparingly villous, con- 

 spicuously glandular-dotted; calyx-tube turbinate, membranous, 2 mm. long, minutely glandu- 

 lar, glabrous, except at the apex; lobes triangular, acute, densely villous, about 1 mm. long; 

 corolla rose-purple, resembling that of the preceding ; pod glabrous, sparingly glandular-dotted. 



Type collected on sand near Paso del Norte, Chihuahua, September 23, \SS6, Pringle 720, in 

 part (herb. Cloumbia Univ.). 



111. Parosela glaberrima (S. Wats.) Rose, Contr. U. S. 

 Nat. Herb. 10: 103. 1906. 



Dalea glaberrima S. Wats. Proc. Am. Acad. 22: 470. 1887. 

 Dalea arenaria M. E. Jones, Contr. W. Bot. 12: 8. 1908. 



An annual or perennial, with a long slender deep root; stems erect to prostrate, diffusely 

 branched, 3-6 dm. long, glabrous, sparingly glandular-dotted; leaves spreading, 2-3 cm. long; 



