388 PATAGONIAN EXPEDITIONS : BOTANY. 



c2. Leaves acuminate. Glandular hairy. strictum. 



b2. Petals small. Leaves obtuse, viscid. Capsule curved upwards. vtdgatotut, 



A2. Leaves linear, very long. Dichotomously umbellate. Petals as long as the sepals. 



com mersonia num. 



A$. Leaves oblong-linear, whorled, glabrous. Peduncles 3-flowered. colsmanni. 



A^. Leaves lance-elliptical to linear-oblong, glandular. Peduncles i- (2-)flowered. 



fufgianum. 



A$. Leaves subovate, obtuse. Viscid. Cymes at length lax. Petals shorter than sepals. 

 b. Stamens 10. Cymes glomerate at first. glonicratum. 



b2. Stamens 4-5. Tufted annual. senddecandrum. 



i. CERASTIUM ARVENSE Linn. 



Perennial, nearly glabrous, rather slender. Lower leaves and leaves of 

 sterile shoots linear-oblong, crowded. Stem leaves distant, linear-lanceo- 

 late. Flowers cymose ; pedicels slender ; petals obcordate, greatly exceed- 

 ing the sepals. 



(Temperate parts of Eurasia and N. Amer. Common in Chili and S. 

 Brazil.) Everywhere on the pampas of S. Patagon. (Hatcher & Peter- 

 son) ; Punta Arenas ; Fuegia to Cape Horn. Falklands. 



C. ARVENSE FUEGIANUM Hook. f. 



Leaves ovate to ovate-lanceolate, long, coriaceous, imbricated. Flower 

 solitary, terminal, large. Capsule slightly exceeding the calyx. 



C. ARVENSE NERVOSUM (Naud.). 



Specimens i -flowered ; sepals more or less purpurascent at the apex, 

 laxly and minutely puberulous. 

 S. Andine Patagon., Baguales. 



C. ARVENSE PARVIFLORUM Dusen. 



Densely branching, the branches small and glandular. Panicles dense. 

 Sepals scarcely scarious-edged. Petals scarious, exceeding the sepals. 

 S. Fuegia, Rio Grande. (Dusen.) 



C. ARVENSE STRICTUM Hook. f. 



Erect, strict, flowers paniculate. 



2. C. COLSMANNI Lehm. 



Stem strict. Leaves in whorls, fasciculate, reflexed, oblong-linear, 

 glabrous. Peduncles terminal, about 3-flowered. 

 (Central European Alps.) Patagonia, Magellan. 



