510 PATAGONIAN EXPEDITIONS I BOTANY. 



specific descriptions have originally appeared under Adesmia.*} Rela- 

 tively to the fruit the genus has 3 sections, viz : 



1 i ) Leiocarpum : Legumes glabrous, smooth or verrucose. 



(2) Dasycarpum : legumes puberous, hispid or villous, with simple 

 hairs. 



(3) Ptilocarpum : legumes with villous or plumose setae. 



KEY TO THE SPECIES. 

 A. Unarmed, herbs or shrubs. 

 b. Flowers solitary in the axis. 



c. Dwarf, subcespitose, silky villous. Leaflets 5-8 pairs. Flowers large, on long ped- 

 icels. (= villosum f) morenonis. 

 C2. Woody decumbent. Leaflets 3 pairs. Standard violet-lined. pannfolium. 

 c$. Woody diffuse. Leaflets 7-5 pairs, glabrous, small, retuse. Legume tomentose. 



retusum. 



4. Diffuse, woolly undershrub. Leaflets 3-5 pairs. Legume 3-jointed. lanatum. 

 c$. Prostrate, silky herb. Leaflets 5-7 pairs. Flowers large. Legumes 2-3-jointed. 



villosum. 



c. Appressed silky, with woody stem. Leaflets 2, sessile. lotoidcs. 



cj. Viscid, creeping herb. Leaflets 3 5 pairs, ciliate-toothed. Legume lo-jointed 



hairy. pumilum. 



c8. Low, snowy-silky. Leaflets 3. suffocalum. 



eg. Leaves and pedicels long; leaflets 3-4 pairs. Flowers orange. Legume 4-5-jointed. 



leptopodum. 

 62. Flowers solitary, terminal. Leaves fleshy, glabrous, trifoliolate. 



c. Cespitose perennial, with crowded leaves. Flowers golden. Legume glabrous. 



salicornioides. 

 c2. Low with woody, leafless base. Flowers orange. Legume tubercled, hairy. 



carnosum. 

 b$. Flowers in axillary racemes, small. 



c. Leaflets 6-7 pairs, emarginate, truncate. affine. 



c2. Trifoliolate, smaller upwards. trifoliatum. 



64. Terminal raceme and axillary flowers. Leaflets 5-7 pairs, glandular. Legume 4-8- 



jointed, muricate. muricatum. 



b$. Flowers in axillary and terminal racemes. Leaflets 10-15 pairs and terminal cirrh us. 



Legume 3-jointed, hairy-glandular. boronioides. 



66. Flowers in terminal racemes. 



c. Leaflets 3 pairs, thick. Flowers 1-6 in raceme, orange. amcghinoi. 



C2. Leaflets 3-5 pairs. Undershrub. 



d. Standard silky. Hoary. griseum. 



dz. Standard glabrous. White-tomentose. candidum. 



c$. Leaflets 4 pairs, smooth. Flowers purple. sylvestrii. 



C4. Leaflets 11-13, silky, small. Legume bristly. Annual. filipes. 



c$. Leaflets 5-7 pairs, pubescent. 



