MACLOSKIE : COMPOSITE. 839 



Var. ( i ) With the lower leaves broader and lobed. 



(2) With leaves linear, entire. 



(3) A more woolly form at Ushuaia. 



(4) A white-woolly i -headed form at Ushuaia. 



6. SENECIO ARGENTEUS G. Kze. 



Branches i -headed, appressed, sub-tomentose, striate. Stem ascend- 

 ing from a woody base. Leaves linear, entire, obtuse, the upper fewer 

 and acute. Involucre campanulate, scarcely bracteolate, its scales about 

 20, acute, subustulate. Ligules 25 mm., linear-oblong. Achenes hirt- 

 pubescent. 



(Chili, on rocky parts) ; Patagon. (Moreno). 



7. S. ARNOTTI Hook. f. 



Corymbose, discoid. Erect undershrub, glabrous or obscurely glandular- 

 hairy. Branches erect, leafy, simple. Leaves solitary or subfasciculate, 

 coriaceous, broad-linear or oblong-linear-lanceolate, acute, entire, margins 

 revolute, rib underneath puberulous. Heads 4-12, broad, with long 

 pedicels and subulate, bracteate leaflets. Involucral scales narrowly linear- 

 lanceolate, acuminate. Achenes hispid-puberulous. 



Magellan; Fuegia, at Orange Harbor (specimen in Gray Herb.); S. 

 Patagon., by J. B. Hatcher. 



S. ARNOTTI DENTATUS. 



With coarsely toothed leaves. 



8. S. AURICULATUS Alboff. 



Corymbose. Tall, to 1-2 m., glabrous, with fistular stem, ending in the 

 lax, about lo-headed inflorescence. Leaves large, membranaceous ; the 

 lower long-petioled ; the upper sessile, amplexicaul ; broad, oblong-obtuse, 

 subcordate at base, pinnately lobed, the lobes rounded and lobulate, and 

 their sublobes crenate-dentate ; the uppermost leaves lance-oblong, acutely 

 toothed. Petioles with 2-4 small, amplexicaul lobes ; the upper leaves only 

 with large auricles. Peduncles rather long. Heads mid-sized. Involu- 

 cral scales few, linear, acute. Ray-flowers white. 



S. Fuegia, in Navarin I., beautiful. 



