518 PATAGONIAN EXPEDITIONS: BOTANY. 



thickish. Flowers sparse on the spinescent branches, on short peduncles. 

 Calyx-teeth linear, shorter than the tube. Corolla exceeding the calyx, 

 yellow. Legume small, i -jointed, smooth. 



S. Patagon., along Rio Sta. Cruz and Rio Chico. By Rio Chubut. 

 (More tomentose forms approach P. canescens Gray.) 



26. P. PENDULUM (DC). 



Unarmed; long-racemed. Stems diffuse, scarcely pubescent. Leaves 

 pinnate ; the lea/lets 5-7 pairs, oval-oblong, entire, pubescent, nerveless. 

 Lower flowers of raceme distant. Flowers yellow, reddish outside. 

 Legume pendulous, y-8-jointed, subhispid. 



Argentina to N. Patagon. (?). 



27. P. PUMILUM (Hook, f.) Reiche. 



Unarmed ' ; not racemed. Sparingly viscid-hairy, creeping herb, with 

 short stem, 5-10 cm. long, and pinnate leaves, having broad, sheathing 

 stipules, which are produced upwards as broad auricles. Leaflets 3-5 

 pairs, coriaceous, obovate-cuneate, obscurely ciliate-toothed, 6 mm. long. 

 Peduncles i-flowered, equalling the petioles ; flower erect, incurved in 

 fruit. Calyx campanulate, subequal at base. Standard twice as long, gla- 

 brous outside. Style long. Legume linear-compressed, about lo-jointed, 

 crenate at the joints, pubescent. (Standard purplish ; wings yellow). 



S. Patagon., at Killik Aike near head of Rio Chico (Hatcher) ; Puerto 

 Negro ; Magellan ; Fuegia. 



28. P. PUNGENS (Clos.) Reiche. 



Armed ; shortly-racemed. Hoary shrub, with distorted branches, and 

 short, crowded branchlets, having subulate spines. Petioles of the pinnate 

 leaves produced apically. Leaflets 5-7 pairs, ovate to ovate-lanceolate, 

 apiculate, small, entire, hoary. Racemes terminal on the branches. Ped- 

 icels short. Calyx campanulate ; its teeth lance-linear, twice as long as 

 the corolla. Corolla pubescent externally ; standard with black spot. 

 Legume (?). 



(Chili.) ; Patagon. (?). 



29. P. RETROFRACTUM (Hook & Arn.) Reiche. 



Unarmed ; large racemes. Glandular-hairy, with pinnate leaves. Leaf- 

 lets 7-8 pairs, obcordate, obscurely toothed. Standard broad, striate, 



