108 NORTH AMERICAN FLORA [Volume 24 



152. Parosela formosa (Torr.) Vail, Trans. N. Y. Acad. Sci. 

 14: 34. 1894. 



Dalea formosa Torr. Ann. Lye. N. Y. 2: 177. 1827. 



A shrub, 3-10 dm. high, divaricately branched; branches glabrous and sparingly glandular- 

 dotted; leaves usually less than 1 cm. long; stipules subulate, persistent; rachis glabrous; 

 stipels conic, thick; leaflets 7-9, oblong-spatulate, 1.5-2 mm. long, involute, glabrous, glandular- 

 dotted beneath; spikes head-like, few-flowered, short-peduncled, at the ends of the branches; 

 bracts broadly ovate, glabrous, conspicuously glandular-dotted, short-acuminate, deciduous; 

 calyx-tube deeply campanulate, pilose, 10-ribbed, with a row of glands in each interval; lobes 

 filiform from a triangular base, plumose, 6 mm. long; corolla rose-colored with the banner 

 usually yellowish; blade of the banner cordate, 4 mm. long, the claw nearly as long; blades of 

 the wings 5 mm. long, those of the keel-petals 6-7 mm. long, the claws of both 4 mm. long; 

 pod pilose and glandular-dotted above, glabrate below. 



Type locality: On the Platte, Colorado. 



Distribution: Oklahoma and Colorado to Arizona. Sonora, and Chihuahua. 



Illustration: Emory, Notes Mil. Rec. Bot. pi. 1. 



153. Parosela Purpusi (Brand.) Rose, Contr. U. S. Nat. 

 Herb. 10: 106. 1906. 



Dalea formosa Brand. Proc. Calif. Acad. II. 2: 147. 1890. 

 Dalea Purpusi Brand. Rrythea 7: 2. 1899. 



An intricately branched shrub, 3-4 dm. high; stem and branches slightly glandular-dotted 

 and glabrous, or slightly strigulose when young, straw-colored in age; leaves 1-2 cm. long; 

 stipules subulate, 1-2 mm. long; raehis strigose; stipels gland-like; leaflets 3-5, obovate, ob- 

 tuse or retuse, 4-6 mm. long, strigose on both sides, conspicuously glandular-dotted beneath; 

 spikes terminal, ovoid, about 1.5 cm. long; bracts ovate, deciduous, 5-6 mm. long, silky and 

 sparingly glandular-dotted; calyx-tube campanulate, silky-pubescent, 2.5 mm. long, with 

 yellow glands between the 10 prominent ribs; lobes filiform from a lanceolate base, 3.5-4 mm. 

 long, plumose; corolla rose-colored or pink; blade of the banner broadly cordate, 3 mm. long; 

 blades of the other petals obliquely obovate, 4-5 mm. long; pod silky pubescent, glandular- 

 dotted. 



Type locality: Calmolli, Lower California. 



Distribution: Lower California. 



XXXVII. Microphyllae. Branched glabrous shrubs. Leaflets of several pairs. Spikes 

 mostly short, dense; bracts glabrous or pubescent, mostly conspicuously glandular, dark, 

 tardily deciduous. Calyx-tube silky, more or less conspicuously glandular in the intervals; 

 lobes filiform from a broader base, longer than the tube. Corolla yellow, often turning rose- 

 purple, brownish, or almost black in drying. Wings and keel-petals inserted far below the 

 middle of the staminal tube, the latter the larger. Pod villous above, less so or glabrate at 

 the base. 



154. Parosela melantha (S. Schauer) Rydberg. 



Dalea melantha S. Schauer, Linnaea 20: 746. 1847. 



A shrub; stem erect, glabrous, sparingly glandular-dotted, blackening in drying; leaves 

 1-2 cm. long, spreading; stipules subulate, 2 mm long; rachis sulcate, glabrous; stipels conic, 

 fleshy; leaflets 7-13, cuneate, usually emarginate or retuse, 2-4 mm. long, glabrous on both 

 sides, conspicuously glandular-dotted beneath, blackening in drying; peduncles 2-5 cm. long; 

 spikes oblong, 1-4 cm. long; bracts ovate-lanceolate, acuminate, ciliate at the base and along 

 the margins black, glabrous on the back, at least at the tip; calyx-tube campanulate-turbinate 

 2-3 mm. long, strongly 10-ribbed, pilose, with a row of glands between the ribs; lobes filiform 

 from a triangular base, plumose, longer than the tube; corolla yellow, turning almost black 

 in drying; blade of the banner 3 mm. long, cordate, usually with a gland at the tip, the claw 

 2-3 mm. long; blades of the wings 4 mm., those of the keel-petals 5 mm. long, the claws of both 

 1.5 mm. long; pod villous-pilose above, glabrous towards the base. 



Type locality: State of Oaxaca. 



Distribution: Veracruz and Hidalgo to Oaxaca. 



