PATAGONIAN EXPEDITIONS I BOTANY. 

 3. AOENA ANDINA Phil. 



Thick black rhizome bearing rosettes of pinnatipartite leaves, the parts 

 pinnatifid, underneath and marginally setaceous. Flowers in a head or 

 large spike. Sepals setose. Fruit glabrous, with subulate spines, twice 

 as long as the fruit is broad. 



(Chili, near snow) ; Patagon. (?). 



4- A. ANTARCTICA Hook. f. 



Low. Stems short, robust, prostrate, ascending, and sparsely branch- 

 ing. Leaves crowded, leaflets 3-4, broadly oblong, obtusely serrate, 

 medially channeled, silky-villous above with tawny hairs, pilose under- 

 neath. Peduncle scapiform. 



" I have not met with this small and very distinct species either in 

 flower or fruit." (J. D. Hooker.) (A specimen so named in the Gray 

 Herbarium has the head terminal and subglobular.) 



E. and W. Magellan, Fuegia, passim, to Hermite I., and Cape Horn ; 

 Staaten I. 



5- A. ARGENTEA R. & P. 



Erect or ascending. Leaves numerous, 4-6 cm. long, with 4-6 pairs 

 of coriaceous, ovate-oblong or lanceolate, serrate leaflets, dull green and 

 smooth on upper surface, silvery-silky beneath. Head globose. Bracts 

 linear. Calyx smooth. Fruit silky upwards, with 4 yellow spines. 



Valdivia. 



6. A. CADILLA Hook. f. 



Stem prostrate, branching, the branches ascending, and petioles villous 

 with spreading hairs. Leaves membranaceous, silky ; leaflets broad ovate- 

 oblong, obtuse, incise-serrate. Peduncle scape-like, the head globose. 

 Calyx densely setose-pilose, its lobes villous outside. Stamens 2, filaments 

 and anthers small. Fruit obconical, ending in 4 long, divaricate, filiform 

 seta. Style short, slender, plumose. 



Vernacular name, "cadilla." 



S. Chili. Patagon. (?). 



7. A. OESPITOSA Gill. 



Silvery-silky. Leaflets 3-4-jugous, the upper entire, the lower bi-tri- 

 fid, segments linear, entire, small. Flowers in 1-2 capitula. Fruit ovoid, 

 smooth and armed with short spines. 



