600 PATAGONIAN EXPEDITIONS I BOTANY. 



LYTHRUM HYSSOPIFOLIUM Linn. 



Flowers axillary, solitary, pink-purple. Leaves sessile, most of them 

 alternate, or the lowest opposite, oblong, obtuse; those of the branches 

 much smaller than those of the stem. Stamens included. 



(Eurasian; naturalized in N. Amer. and the Andes); N. Patagon., by 

 Rio Negro. 



3. CUPHEA P. Browne. 



Herbs or undershrubs, often viscous, with entire leaves, and interpet- 

 iolar, i -many-flowered peduncles. Calyx tubular, several-ribbed, gib- 

 bous, 6-toothed or also with 6 additional accessory teeth interposed. 

 Petals 6, 2 of them larger; or none. Stamens 6-n, 2 of them shorter; 

 or rarely 12. Ovary unequally 2-celled. Stigma capitate, 2-lobed. 

 Capsule enclosed in the calyx. 



Species 157, American, most in extratropical Brazil and Mexico. (Fig. 

 in Eng. & Prantl, iii, 7, p. 8, H-Q and R-U.) 







i. C. GLUTINOSA Cham. & Schl. 



Clammy ; pubescent, mixed with long, glandular hairs. Stem branched 

 at the apex. Leaves short-petioled, lanceolate, acute. Calyx with a 

 short spur. Petals shorter than the calyx, violet. Stamens 6. Style 

 villous. Ovules 415. 



(Brazil); N. Patagon., near the mouth of Rio Negro. 



2. C. HYSSOPIFOLIA Kth. 



Undershrub, with strigose branches. Leaves lanceolate, acutish, rather 

 obtuse at their base, glabrous above, but strigose-hairy on the midrib and 

 veins. Flowers alternate, pale-violet. Calyx glabrous. Stamens in- 

 cluded. Filaments villous. Seeds 5-6. 



N. Patagon. 



3. C. SPICATA Cav. 



Erect, annual, branching, hairy. Leaves petiolate, ovate-oblong, acute 

 both ways, glabrous, the margin scabrous. Axillary and terminal spike- 

 like racemes, with opposite pedicels. Calyx hirtellate. Petals unequal, 

 small, pink. Stamens 12. 



(Trop. Amer.); marshes of N. Patagon. 



