MACLOSKIE I CALYCERACE/E. 763 



rosules. Bracts 3-5-cleft, concrescent. Flowers greenish. Ovaries angu- 

 late, subconcrescent, apically truncate, 5-toothed, the teeth lanceolate. 

 Corollas obconical-cylindraceous, shortly 5-toothed. Stamens inserted at 

 base of the tube. Style filiform, exsert. 



Chubut, in mountains by Carren-leofu. Allied to G. caleofuensis. 



' 3. NASTANTHUS Miers. (In Eng. & Prantl, sub Boopis.) 



Stemless herb, with short, thick, i -headed scape. Leaves rosulate, 

 thickish, dentate or pinnatifid. Pales of receptacle few, slender. Corollas 

 slender at base. Achenes angulate-subulate, as in Boopis anthemoides, 

 but crowned by the very obtuse calyx-lobes. 



i 



1. N. CHUBUTENSIS Speg. 



Green, glabrous, fleshy perennial. Leaves subfasciculate at the crown 

 of the root; erect, with oblanceolate or obovate limb, crenate, dentate, 

 produced to a petiole 2-4 times as long. Scapes numerous, terete, slen- 

 der, the marginal free and scarcely exceeding the leaves ; the central often 

 shorter than the concrescent leaves. Heads globose, almost without 

 pales, with a 5-y-leaved involucre ; lobes narrowly ovate or sublanceolate, 

 acute, entire. Flowers numerous ; corollas funnel-filiform, 5-cleft ; stamens 

 inserted at the throat of the corolla-tube. Achenes broadly pentagonal- 

 winged ; calyx-lobes broad, obtuse. 



Chubut, in dry, rocky places near Carren-leofu. 



2. N. PATAGONICUS Speg. 



Glabrous, rather small perennial. Leaves densely and imbricately 

 rosulate at the crown of the root ; limbs broad-obovate, incised-dentate, 

 teeth acute, often callously mucronate, attenuate to a longer petiole. 

 Heads mostly dimorphous, a very large central head on a thick, naked 

 scape, and nearly always several lateral, smaller, subsessile heads, with 

 involucres 8 2o-lobed ; the lobes ovate, acute, entire. Receptacle naked 

 or scarcely fimbrilliferous. Flowers numerous, narrowly obconoid-cylin- 

 draceous, greenish, 5-merous ; corolla-lobes long-acute ; stamina I insertion 

 in the mouth. Style exsert, slender. 



Chubut, rarely in dry, stony places near Teka-choique. 



