894 PATAGONIAN EXPEDITIONS I BOTANY. 



oblong-lanceolate, entire or i -toothed, ending in a whitish, strong spine. 

 Petiole broad, ciliate. Stems 1-4, i -headed, scarcely exceeding the 

 leaves, bearing linear, ciliate-spinose leaves. Heads showy. Involucre 

 hemispherical ; its scales oblong-lanceolate, greenish-blue, margins scari- 

 ous-white, apex "pungent, yet snowy. Receptacle small, naked. Achenes 

 silky. Pappus sordid. 

 Magellan, Punta Arenas. 



5. PEREZIA LINEARIS Less. 



Stem erect, simple, i -headed, or with many-leaved, i -headed branches. 

 Leaves coriaceous, linear, acute, glabrous, rigidly and equally ciliate on 

 margin; the lowest crowding, spreading; the upper sparse, erect. Invo- 

 lucral scales 3-4-seriate, imbricate, the outer ones rigidly and regularly 

 ciliate, as are the leaves, the innermost marginally ciliate. 



(S. Chili, on ground amidst rocks on the mountains) ; W. Patagon., in 

 upper valley of Rio Aysen, and N. Patagon., by Lago Nahuel-huapi 

 (Dusen) ; Chubut, amid dry, hilly rocks. 



6. P. MAGELLANICA (Linn, f.) Lag. (DC. sub Clarioncea.} 

 Radical leaves, pinnately parted, the parts entire, ciliolate, ovate, the 

 terminal subrotund. Stem scapiform, 2-3-leaved, pilose-glandular, with 

 solitary, terminal head. Involucral scales 2-seriate, the outer short, spread- 

 ing. Outer flowers long-radiant. 



W. Patagon. ; E. and W. Magellan ; Fuegia to Cape Horn ; Staaten I. 



7- P. MEGALANTHA Speg. 



(Clarioncea.} Stemless, glandular-hispid. Rootstock branching. Rad- 

 ical leaves 30-40 mm. long, spatulate, toothed. Scape much exceeding 

 the leaves, i 2-leaved, simply i -headed. Head hemispherical-campan- 

 ulate, rather large. Involucral scales several-seriate, membranaceous, 

 pubescent. Corolla lilac. 



S. Patagon., by Lago Argentine ; Valley of Rio Gallegos. 



8. P. OLERACEA O. Ktze. 



Glandular-hairy. Radical-leaves rosulate, pectinate, sessile, 5 by 2 cm. 

 Scape 10 cm. high, bearing a cordate-ovate acute bract remote from the 

 solitary, terminal head, and 2-3 broader, smaller, more lacerate, approx- 

 imate bracts. Head very large, 3 cm. broad, 4 cm. high. Involucral 



