5 22 PATAGONIAN EXPEDITIONS I BOTANY. 



the East coast." (J. D. Hooker.) Not native in Argentina, nor in 

 Australia. 



KEY TO THE SPECIES. 

 A. Peduncles I -flowered. Stipules semisagittate. 



b. Leaflets i pair, rarely 2 pairs, long-linear, glabrous. magellanica. 



b2. Leaflets 2 pairs, small, obovate, setula instead of cirrhus. bijuga. 



3. Leaflets 2-3 pairs, linear mucronate. Cirrhi undivided. solisi. 



A2. Peduncles i-2-flowered. Stipules semisagittate. 



6. Leaflets 1-2 pairs, obovate, oblong, silky. Cirrhus undivided. patagonica. 



l>2. Leaflets 3-5 pairs, grass-like. Cirrhus branching. graminea. 



AT,. Peduncles 2-flowered. Leaflets 3-4 pairs, narrow- linear, acuminate. Cirrhus undivided. 



Stipules narrow. hookeri. 



A^. Flowers in pairs in axils. Leaflets 2 pairs, oblanceolate, silky. Cirrhus undivided. 



Stipules ovate. sericella. 



A$. Peduncles 2-4-flowered. Leaflets 2 pairs (i pair), linear. Stipules semisagittate. All 



glabrous. morenonis. 



A6. Peduncles 3-5 -flowered. Leaflets 5 pairs, oblong-basicuneate, mucro instead of cirrhus. 



Stipules ovate-lanceolate. ecirrata. 



A"j. Peduncles 4-5 -flowered. Leaflets 4 pairs, oblong-linear. Cirrhus sometimes divided. 



Stipules semisagittate-subulate. Pubescent. vicina. 



AS. Peduncles many-flowered. Stipules semisagittate. 



b. Cirrhi undivided. Leaflets 5 pairs, elliptical. Flowers violet. darapskyana. 



62. Cirrhi divided. 



c. Leaflets 6-9 pairs, elliptical. Flowers yellow, with purple. macraei. 



C2. Leaflets 910 pairs, oblong-elliptical. Flowers crowded. Calyx-teeth only 2. 



nigricans. 



i. VICIA BIJUGA Gillies. (Plate XX.) 



Perennial, prostrate, cespitose. Leaflets 2 pairs, small, obovate, retuse, 

 not mucronate, sparsely subvillous ; with short setula ending the rachis. 

 Otherwise like V. solisi, but distinct. Stiptiles semisagittate, ovate, 

 without a nectary. Pedttncles short, puberulous, jointed near their base, 

 2-3 mm. long, lax. Calyx turbinate, puberulous, its teeth subequal, tri- 

 angular. Corolla 6-7 mm. long, ochroleucous. Ovary linear, glabrous, 

 6-ovuled. 



(Argentina); S. Patagon., by Rio Chico. 



V. BIJUGA LONGIPES Speg. 



Lower leaves obovate, obtuse, mucronate. Peduncle at first short, 

 lengthening after anthesis. 



S. Patagon., near Rio Sta. Cruz and R. Scheuen. On pampas by Coy 

 Inlet (O. A. Peterson, "bluish-white" Nov. 18, 1896.) Determined in 

 Royal Gardens, Kew. 



