90 NORTH AMERICAN FLORA [Volume 24 



100. Parosela polycephala (Benth.) Rydberg, sp. nov. 



Dalea polycephala Benth.; Hemsl. Biol. Centr. Am. Bot. 1: 244; hyponym. 1880. 



A low shrub; branches numerous, gray, puberulent, sparingly glandular-dotted; leaves 

 less than 1 cm. long; stipules minute, subulate; rachis puberulent; stipels conic, gland-like; 

 leaflets 5-9, obovate or oblanceolate, often folded, canescent-puberulent, glandular-dotted 

 beneath, 2 mm. long or less; spikes subsessile, sub-globose; bracts ovate, acute, shorter than 

 the calyx; calyx-tube broadly campanula te, densely villous, inconspicuously glandular-dotted, 

 2 mm. long; lobes 1.5 mm. long, ovate, acute, the lowest more lanceolate and a little longer; 

 blade of the banner yellowish, glandular-dotted towards the base, rounded-reniform, 3 mm. long 

 and slightly broader, the claw 2 mm. long; the other petals rose-purple, inserted near the middle 

 of the staminal tube, the blades of the wings 4 mm. long, those of the keel-petals broader and 

 with a smaller lobe, the claws of both 1-1.5 mm. long; pod pubescent. 



Type collected in San Luis Potosi, 1878, Parry & Palmer 160 (U. S. Nat. Herb. no. 24425). 

 Distribution: San Luis Potosi. 



101. Parosela decora (S. Schauer) Rydberg. 



Dalea decora S. Schauer, I.innaea 20: 743. 1847. 



A shrub, 3-10 dm. high, virgately paniculately branched; branches finely tomentose- 

 canescent and glandular-tubercled; leaves numerous, spreading, about 1 cm. long; stipules 

 subulate, small; petiole very short, tomentose; stipels subulate; leaflets 3-7, obovate-cuneate 

 to oblong, obtuse or retuse, 2-5 mm. long, villous-tomentose, glandular-dotted on both sides, 

 but less so above; peduncles terminating the branches, very short; spikes short and dense, 

 head-like, 1-1.5 cm. long; bracts persistent, broadly obovate, abruptly acuminate, shorter 

 than the calyx, tomentose ; calyx-tube broadly campanulate, 2.5 mm. long, densely white- villous; 

 lobes deltoid, shorter than the tube, acute; banner white or ochroleucous, the blade round- 

 reniform, 4 mm. long and 5 mm. broad; wings and keel-petals inserted far below the middle 

 of the staminal tube, purple, the blades 5 mm. long, the claws 2 mm. long; pod pubescent. 



Type locality: State of Oaxaca. 



Distribution: Oaxaca. 



102. Parosela dorycnoides (DC.) Rydberg. 



Dalea dorychnoidcs DC. Prodr. 2: 245. 1825. 



Dalea pulchella Moric Mem. Soc Geneve 7: 249. 1836. Not D. pulchella G. Don, 1832. 



? Dalea argentea Mart. Del. Sem. Hort. Monac 1846. — Walp. Ann. 1: 228. 1848. Not D. argenlea 



G. Don, 1832. 

 Parosela pulchella A. Heller, Cat. N. Am. PI. ed. 2. 6. 1900. 



A shrub, 5 dm. high or more; branches finely grayish-tomentose and more or less promi- 

 nently glandular- tuberculate; leaves 1-1.5 cm. long, spreading; stipules subulate, 2-3 mm. long; 

 petiole 3-4 mm. long; rachis finely tomentose; stipels gland-like; leaflets 5-7, obovate, retuse 

 at the apex, 3-8 mm. long, densely and appressed silky-canescent; peduncles terminating the 

 branches, 1-3 cm. long; spikes dense, head-like, 1-1.5 cm., rarely 2 cm., long; bracts broadly 

 obovate, abruptly short-acuminate, tomentose, shorter than the calyx, persistent; calyx-tube 

 broadly campanulate, oblique, 2 mm. long, white-villous; lobes deltoid, more than half as 

 long as the tube, the lowest one narrower and almost equaling the tube; banner ochroleucous, 

 the blade rounded, 3 mm. long, the claw 2 mm. long; wings and keel-petals purple, the blades 

 obliquely obovate, with a small basal lobe, 5 mm. long, those of the keel-petals united along 

 the lower edge*, the claws 2 mm. long; pod pubescent. 



TypiS locality: Tropical America. 



Distribution: San Luis Potosi to Hidalgo. 



Illustrations: Mem. Soc. Geneve 7: pi. 7; Moric. PI. Nouv. Am. pi. 7. 



XXIII. Psoraleoides. Pubescent shrubs, branched above. Leaflets rather few, more or 

 less canescent. Spikes many, each at the end of a leafy branch. Calyx-tube campanulate, 

 pubescent; lobes lance-subulate, four of them half as long as the tube, the lowest somewhat 

 longer and nearly equaling it. Corolla rose-purple, rose, or white, with an ochroleucous banner. 



* Hemsley (Biol. Centr. Am. Bot. 1: 245) erroneously described the petals as all free and all ex- 

 cept the banner oblong-elliptic. 



