to the Rocky Mountains. 193 



or 4 tog-ether) about 2 inches long 4 , smooth, canaliculate above ; pinnae 

 glandular at the base, abruptly pinnate; leaflets 6-7 pairs, oblong-linear, 

 and subfalcate, an inch or more in length, obtuse, subcoriaceous, very en- 

 tire, articulated by small glands to the petiole, marked with elevated veins, 

 particularly on the under surface. Spikes racemose, 3-4 inches long - , ax- 

 illary, by pairs. Flowers small, on pedicels about a line in length, perfect? 

 Calyx subcampanulate, 1-sepalled ; border 5-toothed ; the dentures short 

 and broad. Petals 5, oblong-, rather obtuse, twice the length of the calyx, 

 nearly equal; (estivation valvular. Stamens 10, hypogynous, distinct, de- 

 clinate ? ; filaments nearly equal, smooth, exserted ; anthers oblong 1 . Ger- 

 men stipitate, very villous ; style tapering 1 , villous below; stigma simple. 

 Legume linear, about 6 inches long 1 , straight, compressed, the sides rather 

 convex, 2-valved, about 12-seeded, torulose, pulpy within. 



Hab. On the Canadian ? 



Obs. This plant has but little resemblance to the ordinary 

 Mimosese. It has the appearance of a Gleditschia, in its strong 

 spines, but is a genuine species of Prosopis. 



111. Gtmnocladus canadensis, Lam. Mich. fl. ii. p. 

 241. t. 51. DC. prod. ii. p. 480. On the Canadian. 



112. Pomaria glanuulosa, Cav. ic. v. p. i. t. 402. DC. 

 prod. ii. p. 485. 



Desc Shrub much branched, every part, except the under surface of 

 the leaves, covered with black punctures, or minute glands ; branches 

 slender, subpubescent. Leaves abruptly bipinnate; pinna* 2-3 pairs; 

 leaflets 7-9 pairs, ovate, oblique at the base, obtuse, entire, sessile, about 3 

 lines long - , somewhat hairy ; under surface covered with round immersed 

 black glands; upper surface smooth, of a pale green color. Stipules lan- 

 ceolate ? Racemes axillary, longer than the leaves, twice as large as in 

 Cassia nictitans, yellow. Calyx deeply 5-parted, of a yellowish color ; 

 segments equal iu length; the four superior ones linear-lanceolate, acute; 

 the other broader and concave. Corolla 5-petalled, about as long as the 

 calyx ; petals oblong, obtuse, distinctly unguiculate ; upper one concave. 

 Stamens 10, not connected, declined, rather shorter than the corolla ; fila- 

 ments dilated, and hairy below the middle; anthers oblong, brown, all fer- 

 tile. Pistil as long as the stamens ; germen oblong, hairy ; style somewhat 

 declined, hairy below, dilated upwards; stigma capitate. Legume broad 

 much compressed, sublunate, margined, 2-valved, 1-celled, punctate with 

 black glands, and sprinkled with elevated papillae, which are stellately 

 hispid. Seeds 2-3 in each legume, suborbicular, compressed. 



