882 PATAGONIAN EXPEDITIONS I BOTANY. 



from axils of the primary leaves, i-2-flowered, the outer bracts spines- 

 cent ; the inner appressed, unarmed. 



Patagon., by Golfo de San Jorge; Killik-Aike (Barnum Brown). 



21. NASSAUVIA PUMILA Endl. & Poepp. 



Glabrous dwarf, cespitose, branching. Leaves rigid, apically recurved, 

 imbricate, sessile, ovate, acute, ciliolate at the base, apically blackish and 

 3-toothed, the teeth denticulated. Heads sessile, terminal, crowded amid 

 the leaves, 5-flowered. Involucral scales scarious, apically black, the 

 outer shorter and narrower. Achenes obovate. Pappiis-pales 3-5, cadu- 

 cous, longer than the achenes. 



Patagon., Chubut, in mountains; Fuegia, alpine above Ushuaia. 



22. N. PYGIVLCA Hook. f. (DC. sub Strongyloma ; H. & A. 



pkyllum.] 



Shrubby, cespitose, glabrous. Leaves oval, acute, dentate-ciliate at 

 their base, apically recurved. Heads crowded at the apex, intermixed 

 with floral leaves. Pappus-pales 3-4. 



Magellan; Fuegia, by Orange Harbor and Blossom Bay. (As Tri- 

 achne, save that its pappus is as Nassauvia pumila, DC. Prodr., vii, 50. 

 " Like a starved specimen of N. gaudichaudii." J. D. H.) 



23. N. PYRAMIDALIS Meyen. 



Glabrous, suffruticulose, branches strict. Leaves ovate, rigid at base, 

 spinose-serrate, ending in a spinose point. Heads crowded in the upper- 

 most axils, making an ovoid raceme ; lower bracts exceeding the heads. 

 Receptacle naked. 



Near N. macrantha DC., but differing by having the leaves ovate, not 

 lanceolate, stem strict, heads glomerate. 



Patagon. ; Chili, by Rio Maipu (33 5). 



N. PYRAMIDALIS ARACHNOIDEA O. Ktze. 



Leaves and shoots webby, but the sterile stems glabrous. 

 Patagon., Lagos. 



24. N. REMEYANA Wedd. 



Leaves crowded, linear-subulate, gradually attenuate from a dilated 

 base, laxly spinulose-dentate, pubescent or glabrate. Heads solitary, 



