726 PATAGONIAN EXPEDITIONS : BOTANY. 



zygomorphic, the tube contracted above the ovary ; mid-lip of the lower 

 lobe the longest ; lobes not spreading. Stamens didynamous. 



Species 20, Eurasia. 



DIGITALIS PURPUREA Linn. 



Pubescent, stout biennial. Lower leaves slender-petioled, 20 cm. long, 

 ovate or ovate-lanceolate, slightly attenuate, acute, toothed. Flowers 

 drooping. Corolla spotted inside. 



(Central and Western Europe) ; Patagon. (introduced). Its leaves are 

 officinal. (Fig. A-H in Eng. & Prantl, iv, 3^, p.. 89.) 



13. GERARDIA Linn. 



Erect, branching herbs or shrubs, chiefly with opposite, sessile leaves, 

 and showy purple or violet or whitish flowers. Corolla with wide tube , 

 slightly 2-lipped, the lower lobe exterior in the bud, the lobes spreading. 

 Stamens didynamous, included, their filaments hairy. 



Species 40, America. 



(Fig. in Eng. & Prantl, iv, 3$, p. 93.) 



i. G. LANCEOLATA (R. & P.) Benth. 



Leaves lanceolate, mostly subrevolute-margined. Calyx-teeth large, 

 spreading, at length reflexed. 

 (Bolivia, etc.) 



G. LANCEOLATA FILIDENS O. Ktze. 



Calyx-teeth linear, subfiliform, less than i mm. broad, 6 mm. long. 

 N. Patagon., by Rio Negro. 



2. G. RIGIDA Gill. 



Scabrous. Leaves linear or lanceolate, acute, floral leaves shorter than 

 the flower. Raceme crowded ; the pedicels not exceeding the calyx, 

 which is glabrous, having long, filiform lobes. Corolla pubescent, its tube 

 much exceeding the calyx, above ventricose-campanulate, pink. Anthers 

 short, mucronate. 



Extratrop. S. Amer. 



G. RIGIDA GRANDIFLORA. 



Leaves of specimens from Rio Negro 6 cm. by 1.5 cm. Flowers large, 

 red-violaceous; calyx-teeth in the variety short. Fruit small, 10 by 8 

 mm., enclosed in the calyx. Seeds minute, scarcely i mm. in diameter. 



N. Patagon. 



