Species sessiliflorae mexicanae Parasolae generis generiee commutatae. 251 



19. Parosela revoluta (S. Wats.) Rose, 1. c, p. 105. 



Dalea revoluta S. Wats.. Proc. Am. Acad., XXII, 404; 1887. 



20. Parosela laevigata (G. Don) Rose, 1. c, p. 25. 

 Dalea laevigata G. Don. Hist. Dichl. PI., II, 224; 1832. 



21. Parosela cyanea (Greene) Rose, I. c. p. 105. 

 Dalea cyanea Greene, Pittonia, I. 153; 1888. 



22. Parosela nigra (Mart. & Gal.) Rose, 1. c, p. 105. 

 Dalea nigra Mart. & Gal., Bull. Acad. Brux., X 2 . 43; 1843. 



23. Parosela erythrorhiza (Greenman) Rose, 1. c, p. 105. 

 Dalea erythrorhiza Greenman, Zoe, V, 185; 1904. 



24. Parosela luisiana (S. Wats.) Rose, 1. c, p. 105. 



Dalea luisiana S. Wats., Proc. Am. Acad., XVII, 341: 1882. 



25. Parosela sericea (Lag.) Rose, 1. c, p. 105. 

 Dalea sericea Lag., Nov. Gen. & Sp., XXIII; 1816. 



26. Parosela gracilis (Kunth) Rose, 1. c, p. 105. 

 Dalea gracilis Kunth, Mimos.. 166. pi. 48; 1819. 



27. Parosela painteri Rose. 1. c, p. 105. 



Stems bushy, forming large clumps 30 to 50 cm high, woody below ; 

 branches clothed with short appressed pubescence, dark-colored, with 

 few or no glands; leaflets 5 to 7 pairs, oblong, 5 mm long, refuse, 

 glabrous and glandless above, glandular and slightly pubescent beneath; 

 spikes at first globular, becoming in fruit 3 cm long; bracts ovate, acute, 

 a little hairy, deciduous; calyx tube broad, glabrous and shining without 

 and bearing a row of black glands between the ribs; calyx teeth linear, 

 somewhat unequal, about the length of the tube; petals yellow or the 

 keel and wings somewhat reddish; fruit pubescent. 



Type U. S. National Herbarium no. 453017, collected by J. N. Rose 

 and Jos. H. Painter on a stony hillside near San Juan del Rio. 

 Queretaro, August 18, 1905 (no. 9526). Resembling P. plumosa, but 

 leaflets smaller and glabrous above, stems darker-colored, spikes 

 shorter, etc. 



28. Parosela pauciflora Rose, 1. c, p. 106. 



Woody at base, much branched, about 60 cm - high, the young 

 branches finely pubescent; leaflets 7 to 9 pairs, sometimes reduced to 3 

 pairs, small, 4 to 7 mm long, oblong, acute or mucronate, hairy on both 

 sides, glandular beneath; bracts lanceolate, acuminate, rather conspicuous, 

 hairy; calyx tube short, hairy, the teeth ovate at base tapering into 

 long subulate tips longer than the the calyx tube; petals small, white; 

 keel and wings borne on the stamen tube a little below the top; 

 ovary hairy. 



Type U. S. National Herbarium no. 316752, collected by C. G. 

 Pringle in shaded places on hills near Guadalajara. Jalisco, December 

 12, 1888 (no. 1825). 



29. Parosela watsoni Rose, 1. c, p. 106. 



Perennial, with at least upper branches herbaceous, very villous; 

 leaflets 9 to 11 pairs, hairy on both sides, linear-oblong, obtuse, 3 to 



