MACLOSKIE : COMPOSITE. 88 1 



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

 Pappiis-pales 5, white-silky. 



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



17. NASSAUVIA MORENONIS O. Ktze. 



(Mastigop horus.} Densely cespitose herb, with thick, short, rooting 

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

 cent, deltoid, 23 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. Pappus-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's, sessile on the apex of the peduncles, 



