348 



The o-enus Jahorosa was established by Jussieu, and de- 

 rived from the Arabic word Jahorose^ which was applied 

 to the Mandragora or Mandrake, a plant of the same natural 

 family; and two species have been described, J. integrifolia 

 and J. runcinata, both of them natives of the plains on the 

 eastern side of South America, near the mouth of the river 

 La Plata. The present species, widely differing from these 

 in character, inhabits the Andes on the side next Mendoza, 

 and was met with particularly at " Los Hornillos," " alto de 

 las pomas," and by the banks of the river " Tanyan." 



Tab. LXXI. Fig. 1, Flower. Fig. 2, Stamen. Fig. 3, 

 Pistil. Fig. 4, Capsule. Fig. 5, Section of do. : — all but 

 Jig. 4 more or less magnified. 



Dr. Gillies has been equally fortunate in finding the two 

 other species of the genus, which I shall thus characterise. 



2. Jaborosa integrifolia; acaulis, foliis petiolatis ovalibus 

 subintegerrimis, corolla longe tubulosa limbi laciniis valde 

 acuminatis. 



Jaborosa integrifolia. Lam. Encycl. v. 3. p. 189. Illustr. t. 

 114. Roemer et Schultes, Sgst. Veget. v. 4. p. 690. 



Hab. Ad vias, locis humidis prope Buenos Ayres. Gillies. 



3. Jaborosa runcinata ; plerumque acaulis, foliis petiolatis 

 oblongo-obovatis sinuato-pinnatifidis, corolla campanu- 

 lata limbi laciniis acutis. 



Jaborosa runcinata. Lam. Encycl. v. 3. p. 189. Hoem. et. 

 Schultes, V. 4. p. 690. Link et Otto, Ic. PL Select, p. 103. 

 t. 48. 



Hab. In planitiebus " Pampas" dictis, prope Buenos 

 Ayres. Gillies. 



In Dr. Gillies's specimen there is no stem whatever, but 

 the leaves and peduncles spring at once from the root, as 

 described by Lamarck. Link and Otto's figure, on the other 

 hand, represents the plant with a stem 4-5 inches long, from 

 which both the flowers and leaves have their origin. 



