MACLOSKIE: LEGUMINOS^E. 511 



d. Legume 7 8-jointed, rough pendent. pendulum. 



d2. Legume 3-jointed, with feathery bristles. longipes. 



c6. Leaflets 13. Legume 3-4-jointed, glandular. confertum. 



cj. Leaflets 7-8 pairs, obcordate, viscid-punctate. Legume 9-1 3-jointed. retrofractum. 

 c8. Leaf-rachis produced phyllodially. Racemes few-flowered, pedicels bracteolate. 



graminidium. 

 bj. The racemes terminal on the branches. Leaflets 3 pairs. Flowers orange. Legumes 



many-jointed. tehuelchum. 



68. Flowers paniculate. Leaflets 58 pairs and a terminal spine. Standard erect, maroon- 

 colored. Legume silky, muricate. mucronalum. 

 by. Racemes long, lax. 



c. Leaflets 1012 pairs, oblong, glabrous. Fruit lo-jointed, hispid. latifolium. 



c2. Leaflets 411 pairs, linear-oblong, hoary. Fruit 2-jointed, hispid. incanum. 

 bio. Flowers minute, hidden. Leaves small, crowded ; leaflets 4 pairs, subobovate. 



aphananthum. 

 A2. Spinescent shrubs. 



b. Flowers solitary in the axils or fasciculate. 



c. Low, cespitose, with black, subterraneous stem and ground-leaves. Hoary. Legume 



4-jointed. subterraaeum. 



c2. Branching, hoary shrubs. Leaflets 56 pairs, thickish. Flowers orange, with red 



lines. Legume 4-jointed. negeri. 



c$. Flowers on spinescent branches. Leaflets 2-3 pairs, thickish. Legume i -jointed. 



patagonicum. 

 b2. Flowers in racemes. 

 c. Leaflets 4 pairs. 



d. Erect, hairy ; leaves fasciculate. gracile. 



d2. Cespitose, hoary ; old branches spiny. karraikense. 



c2. Pubescent. Leaflets 3-5 pairs, small. Legume 3-S-jointed, bristly, trijugum. 

 ^3. Leaflets 57 pairs, hoary. Black spot on pubescent standard. pungens. 



b$. Flowers paniculate. Leaflets 4-6 pairs, hoary. Legume twisted, 3-4-jointed. 



canescens. 



i. PATAGONIUM AFFINE (Hook. f.). 



Unarmed; racemed ; glandular-pubescent. Stem herbaceous, branch- 

 ing. Leaves odd-pinnate, with small stipules. Leaflets 6-7 pairs, peti- 

 olulate, linear-oblong, emarginate-truncate, obscurely ciliate-dentate. 

 Peduncles axillary, long, naked. Flowers small, calyx equal at the base, 

 its segments acute. Standard half exceeding the calyx. 



Patagonia, from Bahia Blanca to Magellan. 



2. P. AMEGHINOI (Speg.). 



Unarmed. Perennial, low, cespitose. Leaves apically crowded, densely 

 pubescent. Leaflets 3 pairs, obovate, thick, entire. Flowers apical, soli- 



