530 PATAGONIAN EXPEDITIONS I BOTANY. 



exceeding the leaves, with 6-12 yellow flowers. Legumes linear, gla- 

 brous, veiny. 



(Eurasia and N. Amer.), S. Patagon., by Rio Chico de la Sta. Cruz. 

 (Hatcher.) 



9. LATHYRUS PUBESCENS Hook. & Arn. 



Stem tetragonal or 2-edged, winged, slightly puberulous. Leaves 

 i -ranked; stipules semisagittate, scarcely as long as the petiole; cirrhi 

 long, simple. Leaflets i pair, large, narrow-lanceolate. Peduncle scarcely 

 exceeding the internode, pubescent upwards, 6-i2-flowered. Calyx pu- 

 bescent, teeth acute. Corolla thrice as long, golden. Young legume lin- 

 ear, flat, tomentose. 



Through all Patagonia and Chonos Archipelago to Bolivia. "Alver- 

 jilla." 



10. L. SERICEUS Lam. (L. tomentosus Vog. non Lam.) 



Rather stout and woody, tomentose-silky. Stem 4-angled, striate. 

 Leaves ending in a stout, simple tendril. Stipules semisagittate, equal- 

 ling the leaflets and exceeding the petiole. Leaflets 2-4, linear or linear- 

 oblong, paralled-veined. Peduncles mostly 4-flowered, or i-2-flowered. 

 Legume linear, 3-5 cm. long, rather inflated. 



N. Patagon., by Rio Negro and northwards. 



11. L. STIPULARIS Presl. 



Smooth, with weak, tetragonal stem. Leaflets linear-lanceolate, mucro- 

 nate. Stipules large, ovate-sagittate, with long, descending auricles, nar- 

 row, acute. Peduncles i-(2-)flowered, at first shorter than the stipules, at 

 length elongating. 



Patagon., by Rio Chubut and Carren-leofu. 



L. STIPULARIS PATAGONICUS Speg. 



Leaflets more acute and smaller. 



12. L. SUBULATUS Lam. 



Pilose. Stems cespitose, filiform, tetragonal. Leaves shortly petiolate, 

 with very short tendrils. Leaflets i pair, linear, acute. Stipules semi- 

 sagittate, linear, nearly as long as the leaflets. Peduncles i-3-flowered. 



