8l8 PATAGONIAN EXPEDITIONS I BOTANY. 



13. GNAPHALIUM MUCRONATUM Phil. 



Perennial. Stems many, white-woolly. Leaves green above, hoary- 

 tomentose underneath, obovate-oblong, attenuate to a kind of petiole, 

 acuminate. Heads crowded at top of the stems. Involucral scales api- 

 cal ly fuscous. 



(Chili); W. Patagon., by Rio Palena; E. Patagon., near Rio San 

 Martin. (Dusen.) 



(G. mucronatum Berg, is Helichrystim mucronatum Less, of S. Afr.) 



14. G. PURPUREUM Linn. (P. americanum Mill.) 

 Herbaceous annual or biennial, with simple, erect stem, tomentose. 

 Leaves linear-spatulate ; upper ones oblong, tomentose underneath, 

 webby-glabrate on upper surface, sessile, or the lowest narrowed to a 

 petiole. Heads sessile, subspicate in the upper axils and terminally. 

 Involucral scales scarious, yellowish-brown or purplish, lance-oblong, 

 acutish, the outer woolly at the base. Achenes roughish. Pappus bristles 

 united at the base. 



(Tropics and subtrop.); about Ajo(S. E. Arg.). 

 Patagon., by Rio Sta. Cruz; Magellan; Fuegia. 



15. G. PURPUREUM SPHACELATUM (H.B.K.). 



Silky-woolly. Leaves oblong-spatulate, mucronate. Heads crowded 

 in the upper axils, in a rather interrupted leafy spike. Invohicral scales 

 linear, apically rufous. 



S. Patagon., by Rio Sta. Cruz. 



1 6. G. SERPYLLIFOLIUM Remy. 



Suffruticose and glabrous below, with many slender stems; woolly 

 upwards. Leaves small, obovate-rotund, the upper subspatulate, obtuse, 

 mucronulate, non-decurrent, woolly both sides. Heads terminal, few 

 (3-5). Involucral scales linear, acute, sphacelate. 



(Argentina) ; S. Patagon., by Rio Sta. Cruz. 



17. G. SPICATUM Lam. 



Stem erect or ascending, hoary. Leaves narrowly oblong-spatulate, 

 the lower broader, the upper subdecurrent, glabrous or webby on the 

 upper surface. Floral leaves shorter, linear. (Fig. 97.) 



