Part 2, 1920] FABACEAE: PSORALEAE 95 



puberulent, 10-ribbed; lobes deltoid, half as long as the tube. Corolla white Wings and 

 keel-petals inserted far below the middle of the staminal tube, the blades oblong or oblanceolate 

 with a rounded basal lobe. Pod puberulent. 



114. Parosela eysenhardtioides (Hemsl.) Rose, Contr. U. S. 

 Nat. Herb. 10: 104. 1906. 



Dalea eysenhardtioides Hemsl. Diag. PI. Nov. 6. 1878. 



A shrub, 2-4 m. high, with ascending branches; branches finely puberulent, sparingly 

 glandular-dotted; leaves ascending, 3-6 cm. long; stipules subulate, 4-5 mm. long- petiole 

 1-1.5 cm. long; rachis finely puberulent; leaflets 7-13, oblong- oblanceolate or oblong-obovate 

 mucronate, 1-2 cm. long, glandular-dotted on both sides; spikes paniculate, sessile or short- 

 peduncled, dense, 1-3 cm. long, 6-7 mm. thick; bracts ovate or lanceolate, acuminate puberu- 

 lent, shorter than the calyx; calyx-tube turbinate, 10-ribbed, puberulent, 2 mm long- lobes 

 deltoid, acuminate, about half as long as the tube; corolla white; blade of the banner ovate- 

 subcordate, 2.5 mm. long, the claw 2 mm. long; blades of the wings 3 mm. long, those of the 

 keel-petals obliquely oblanceolate, with a rather indistinct basal lobe, the claws of both 1 mm 

 long; pod somewhat broadly lunate, puberulent. 



Type locality: Oaxaca. near the Pacific Ocean 



Distribution: Guererro, Oaxaca, and Michoacan. 



115. Parosela leucostachys (A. Gray) Rose, Contr. U. S. 

 Nat. Herb. 10: 104. 1906. 



Dalea leucostachys A. Gray, Mem. Am. Acad. II. 4: 32. 1849. 



A shrub, 5-10 dm. high; branches ascending, leafy, finely puberulent to short-villous 

 almost velutinous, somewhat glandular-dotted; leaves 3-5 cm. long; stipules setaceous, cadu- 

 cous, 2-3 mm. long; petiole 1 cm. long or less; rachis minutely puberulent, glandular-dotted- 

 st.pels gland-like; leaflets 5-9, oblanceolate or cuneate-oblong to obovate, obtuse or retuse' 

 sometimes mucronate; spikes short-peduncled or subsessile in the upper axils and a few panicled 

 at the end of the branches, 1-3 cm. long; bracts lanceolate, acute, puberulent shorter than 

 the calyx; calyx-tube turbinate, 10-ribbed, densely puberulent, fully 2 mm long- lobes tri- 

 angular, acute, one-third as long as the tube; corolla white; blade of the banner rounded- 

 cordate, 3.5 mm.long, the claw nearly 2 mm. long; blades of the other petals obliquely oblan- 

 ceolate, with a rather large basal lobe, 3.5 mm. long, the claws 1 mm. long; pod pubescent. 



Type locality: Cosiquirachi [Cosihuiriachic], Sierra Nevada, Chihuahua 

 Distribution: Chihuahua to Durango and Jalisco. 



XXIX. Lumholtzianae. Perennials, suffruticose at the base. Leaflets many linear 

 more or less involute. Spikes dense, short, capitate; bracts closely imbricate, persistent ovate 

 or obovate, short-acuminate, conspicuously glandular-dotted. Calyx-tube short, sparingly 

 silky ; lobes lanceolate, half as long as the tube. Corolla white. Blade of the banner obovate 

 subcordate at the base. Wings and keel-petals inserted near the middle of the staminal tube 

 all free. [Approaching Thornbera and Petalostemon in habit and the distinct keel-petals.] 



116. Parosela Lumholtzii (Rob. & Fern.) Vail, Bull. Torrey 

 Club 26: 117. 1899. 



Dalea Lumholtzii Rob. & Fern. Proc. Am. Acad. 30- 1 15 1894 

 farosela arizonica Vail, Bull. Torrey Club 24: 14. 1897 

 Dalea arizonica K. Schumann, Bot. Jahresb. 27': 493. 1901. 



A perennial, with a suffruticose branched caudex; stems 1.5-3 dm. high puberulent 

 sparingly glandular-dotted; leaves ascending, 2-4 cm. long; stipules subulate, minute; rachis 

 sparingly pubescent or glabrate, sparingly gland-dotted; stipels gland-like; leaflets 17-27 

 linear, 4-6 mm. long, obtuse, glabrous or sparingly minutely silky when young; peduncles 

 terminating the branches, 3-7 cm. long; spikes dense, subglobose or short-oblong, 1 cm long or 

 less; bracts silky on the margins and near the base, glabrate on the back; calyx-tube sparingly 



