ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS, 303 
there are still a number of species which need to be more carefully 
studied, and for this reason I shall postpone for the present a full 
synopsis of the genus; but, owing to the fact that a number of new 
species have been distributed, especially by Mr. Pringle, and that 
others have proved to be the hosts of new fungi, I feel compelled to 
put out a partial synopsis of the genus. 
The old genus Dalea has been divided into two subgenera. The 
larger one, Eudalea, is again easily divided into two groups, one hay- 
ing pediceled flowers and the other sessile ones. Below are presented 
practically all the known Mexican species of the first group, that. is 
the Paroselas, with pediceled flowers. The species are arranged 
according to their relationships. 
Parosela unifoliata (Rob. & Greenm.) Rose. 
Dalea unifoliata Rob. & Greenm. Proc. Am. Acad. 29: 383. 1894. 
Parosela greenmaniana Rose, sp. nov. 
Somewhat diffuse, slender, annual, glabrous, 30 to 40 em. high; leaves normally 
with 3 leaflets; terminal leaflet much the largest, orbicular, 10 to 12 mm. in diameter, 
with glandular-dotted margin; racemes dense, spike-like, 2 to 4 em. long; calyx tube 
a little over | mm. long, 10-angled, pubescent on the angles, the Jobes ovate, shorter 
than the tube; petals purplish; keel and wings attached to the stamen tube near its 
middle; stamens 10; ovule one. 
Collected by C. G. Pringle on dry soil at Las Sedas, Oaxaca, altitude 2400 meters, 
September 29, 1994 (no. 4924). 
This species was distributed as Dalea anifoliata, but differs in the number of leaf- 
lets, small calyx, different calyx lobes, ete. 
Parosela filiciformis (Rob. & Greenm.) Rose. 
Datlea filiciformis Rob. & Greenm. Proc. Am, Acad. 29: 382. 1894. 
Parosela calycosa (A. Gray) Heller, Cat. N. A. Pl. ed. 2.5. 1890. 
Dalea calycosa A. Gray, Pl. Wright. 2: 40. 1853. 
Parosela frutescens (A. Gray) Vail, comb. nov. 
Dalea frutescens A. Gray, Bost. Journ, Nat. Hist. 6: 175. 1850, 
Parosela spiciformis Rose, sp. nov. 
Annual, 20 to 30 cm. high, erect and somewhat branching; stem and branches 
glabrous (at least below), purplish, glandular; leaflets 5 to 9, glabrous, oblong, 6 to 
15 mm. long; rounded at apex, bearing small glands beneath, the margins crenulate; 
stipules setaceous; inflorescence a spike-like raceme 2 to 3 cm. long, terminal, on a 
slender peduncle (2 to 38 em. long); bracts lanceolate, acuminate; calyx tube 14 mm. 
long, strongly 10-angled, slightly hairy, glandular between the ribs; the lobes about 
as long as the calyx tube, green except the purplish tips. 
Collected by C. G. Pringle near Iguala, Guerrero, October 8, 1900 (no, 9255). 
Parosela vernicia Rose, sp. nov. 
Annual, 60 to 90 cm. high, slender, glabrous; leaves sessile or nearly so, narrow; 
stipules setaceous; leaflets 21 to 41, narrowly oblong, 5 to 7 mm. long, glabrous on 
both sides, glandular-dotted beneath and especially on the margin, obtuse; peduncles 
slender, 5 to 8 em. long; spike densely flowered, 1 to 3 cm. long; calyx tube covered 
with long glossy silky hairs, the tube 10-angled, 2 mm. long, the teeth unequal; 
corolla deep purple. 
Collected by C, G, Pringle on lava tields near Yautepec, Morelos, October 26, 1902 
(no. 868), 
