MACLOSKIE: LEGUMINOS/E. 521 



37. PATAGONIUM TRIJUGUM (Gill.) Reiche. 



Armed ; racemed. Shrub, pubescent, or tomentose, or glabrous. 

 Branches short, stout, intricate, their apex naked, repeatedly forking and 

 spinescent ; spines simple or strong and forking. Leaves fasciculate from 

 tubercles, pinnate. Leaflets 3-5 pairs, small, ovate-cuneate, retuse or 

 mucronate, entire or toothed, sessile. Pedicels racemosely crowded at the 

 ends of the branches, rather long. Calyx long, its teeth narrow-lanceo- 

 late. Legume 3-5-jointed, covered with long, feathery bristles. 



Patagon., mountains of Chubut ; Puerto Deseado, Rio Sta. Cruz. 



38. P. VILLOSUM (Hook, f.) Reiche. 



Unarmed ; not racemed. Soft-silky herb, 5-7 cm. high, with pros- 

 trate, ascending stem and pinnate leaves. Stipules rather large, produced 

 upward into auricles. Leaflets 5-7 pairs, obovate-cuneate. Pedicels 

 shorter than the petioles, axillary, i -flowered. Flowers large. Calyx- 

 teeth long, linear-subulate. Standard slightly exceeding the calyx. 

 Style long. Legume 2-3 jointed, hairy. 



S. Patagon., Puerto Deseado ; Rio Chico. By Rio Chubut and Lago 

 Musters. 



P. villosum typictim Speg. All rufescent-villous. Leaflets obtuse or 

 emarginate. 



P. villosum acutifolium Speg. All ashy-villous. Leaflets oblanceo- 

 late, acute, entire. 



P. villosiim glabratum Speg. Branches, petioles and leaflets glabrous ; 

 pedicels and calyx ashy-villous. Killik Aike (by Barnum Brown). 



21. VICIA Linn. Vetch. 



Climbing or trailing herbs, with tendril-bearing, pinnate leaves (the 

 terminal tendril sometimes represented by a small setula), semisagittate 

 or entire stipules, and axillary, sessile or racemed, blue, violet, or yellow 

 flowers. Calyx-tube slightly oblique, the teeth equal, or the posterior pair 

 longer. Standard obovate or oblong, emarginate, clawed. Wings ad- 

 hering to the shorter keel. Stamens diadelphous, i and 9, or all united 

 below. Style tufted near the tip. Ovules several. Legume flat, dehiscent. 



Species 120, widespread in Temperate regions. "Their Southern limit 

 is in the Strait of Magellan ; and they are more on the West than on 



