MACLOSKIE: COMPOSITE. 88 1 



mucronate, 3-nerved. Flowers 5, outer lip radiant. Achenes silky-villous. 

 Pappus-pales 5, white-silky. 



S. Patagon., by Rio Guillermo (Nordenskjold). 



17. NASSAUVIA MORENONIS O. Ktze. 



(Mastigophoms.} Densely cespitose herb, with thick, short, rooting 

 branches, 2-3 cm. high. Leaves imbricate, amplexicaul, pilose-glabres- 

 cent, deltoid, 2-3 mm. long, and basally as broad, apex obtuse, recurved, 

 thick, entire or 2-toothed. Head solitary, sessile, terminal. Involucral 

 scales 4, scarious, ovate, 2 mm. long, spinose-acuminate, with a reflexed 

 point, denticulate, pilose ; with 2 linear, shorter bracteoles. Flowers 4-5, 

 bilabiate. Papptis-setce 4, pilose, sublanceolate. Achene glabrous. 



Patagon. (M. & T.). 



1 8. N. NIVALIS Poepp. 



Stem suffruticose, creeping, ascending, sparsely branching. Leaves 

 imbricate its entire length, amplexicaul, broad-ovate, recurved at apex, 

 rough below, smooth above, with parallel, impressed striae, entire. Heads 

 in a subglobose glomerule, slightly exceeding the bracts. Achenes oblong, 

 turbinate, glabrous. Pappus of i -seriate, linear pales. (Near N. serpens.} 



(S. Chili, at 2,500 m. elevation) ; S. Patagon., in Cordilleras, by 

 Hatcher. 



19. N. NORDENSKJOLDII O. Hoffmann. (Plate XXVIII, B.) 

 Low, branching, glabrous shrub. Leaves closely imbricate, ovate, with 

 a broad base, semiamplexicaul and soft-toothed, and spinose-toothed 

 above. Heads glomerate at the end of the branches, each with a leafy 

 bract. Involucral scales 2-3-seriate, 6-1 o sublanceolate, entire. Achenes 

 glabrous. Pappus-pales 3-5, white, caducous. 



S. Fuegia, by Beagle Channel ; S. Patagon., in Valley of Rio Gallegos 

 (Nordenskj.) ; and on volcanic rocks at high altitudes near head of Rio 

 Chico de la Sta. Cruz (Hatcher). 



2O. N. PATAGONICA Speg. 



(Strongyloma.] Primary leaves linear-subulate, rigid, spinescent, at first 

 erect-pubescent, afterwards spreading, glabrous. Secondary leaves minute, 

 ovate, obtuse, sessile, sheathing, fascicled, and rosulate in the axils of the 

 primaries. Heads in 2's or 3*5, sessile on the apex of the peduncles, 



