98 Plants Collected in Paraguay, 



A small creeping plant, 15-30 cm. in length, growing in hard 

 soil on the Gran Carapo near Lnque. Prickles few, small, straight, 

 mostly just under the leaves. Flowers a light purple, the heads 

 spreading and very pretty, especially in early morning when the 

 fresh dew is upon them. The heads of flowers upon this small 

 plant are quite striking, and its persistency upon the railroad track 

 over which trains are daily passing, and over which many people 

 are daily tramping, exhibits a toughness of vitality which deserves 

 notice. 



JUimosa polycarpa, Knnth, Mim. 8, t. 3. 



Asuncion (101, 351, 773 and 779). Between Yilla Rica and 

 Escoba (455). November-May. 



An erect, armed shrub 12-15 dm. in height, with beautiful, bluish- 

 purple flowers. Stems striate, covered with small, dark glands, and 

 armed with stout, curved or straight spines. Leaves bipinnate, or, 

 rather, with 2 long pinnate divisions at the end of a petiole 1 cm. 

 in length. Between these divisions is a projecting spine. Pinnae 

 with 30 or more pairs of leaflets, which are spiny-serrate, and with a 

 projecting spine at the apex. Fruit a spine-clothed loment of 3 or 4 

 joints, usually borne in clusters, 4-12 or more in a cluster. Leaves 

 very sensitive. Common in thickets. 



Mimosa rixosa. Mart. ; Benth. in Hook. .Jour. Bot., iv, 361. 



Asuncion (131). November. 



Creeping on the ground or climbing upon other shrubs. Stems 

 slender, clothed with hirsute, spreading hairs and numerous down- 

 wardly curved prickles, which have a dilated base. Flowers a 

 beautiful bluish-purple; heads 8-10 mm. in diameter, often twin, 

 on peduncles 1-2 cm. long. 2 pairs of pinnae at the end of a petiole 

 2-5 cm. long. Leaflets 2 pairs, oblong-elliptical or obovate, the 

 first pair very unequal, one being 2-3 cm. long and 7-10 mm. wide, 

 and the other 3 or 4 mm. long, all of them glabrous above and 

 sparsely setose or hirsute beneath, callous and setose margined, the 

 larger ones mucronate and the smaller aristate. Loments many in 

 a cluster, very setose, 1-2 cm. long, few-seeded. 



mimosa Alleniana, Morong, n. sp. 



A low plant, with angular or striate ferruginous-hirsute stem. A close 

 somewhat glandular down, under the spreading hairs. Leaves mostly conju- 

 gate, but occasionally with 2 pairs of pinnae on divaricate petiolules ; common 



