270 PATAGONIAN EXPEDITIONS I BOTANY. 



longa et explanata c. 9 mm. lata, dense glandulosa, glandulis sessilibus 

 vel substipitatis, trinervata, nervo mediano lateralibus robustiore ; inflo- 

 rescentia subcorymbosa, capitulis perpaucis composita ; pedicelli elongati, 

 c. 5 cm. longi, bracteolati, bracteolis linearibus, angustissimis, integerrimis, 

 centimetre longis, superioribus decrescentibus : capitula cupulata, c. 1.2 

 dm. longa et 1.6 dm. diam.; squamae involucri anguste lanceolatae, 8-9 

 mm. longae, 1.6-1.8 mm. latas, crassae, dorso convexae, membranaceo- 

 marginatae, glandulis sessilibus scaberulae, apice sphacelatae, uniseriatae; 

 flores in quoque capitula c. 140, flavi ; ligulae c. 15, c. 7 mm. longae, ovales, 

 apice tridentatae ; achaenia glaberrima, lo-sulcata; pappus niveus, setis c. 

 75, serratis. 



Abundantly found on densely grassy ground near the border of beech- 

 forest, not far from Lago Viedma, and at an altitude of about 500 m. 



SENECIO CHUBUTENSIS Speg. (Speg., Nov. Add. Flor. Patag., ii, p. 9). 



Heads discoid. Glabrous, viscous, with lax, divaricate, sub-woody 

 branches; and entire, subulate-filiform, acute leaves, narrowing at base. 

 Branchlets naked, with 1-2 heads, the apex obconical, incrassate; the 

 heads obconical, mediocre, with 1-3, or o calycles. Involucral scales 13, 

 narrow, green, acute, apex ustulate, and white penciled. Florets 30. 

 Achenes squamulous, puberulous. 



In Mid-Patag., steppe near Choique-lauen. D. 



S. COLU-HUAPENSIS Speg. (Spegazzini, Nov. Add. Flor. Patag., ii, p. 5). 



Heads discoid. Plant white mealy, with long and branching root ; 

 branches crowded at base, densely leafy, making a hemispherical peat. 

 Leaves spreading, small, sessile, linear-subspatulate, coarsely 3-5-toothed, 

 revolute margined. Heads as long as the pedicels, or longer, broad- 

 campanulate ; involucral scales 13, linear-lanceolate, hoary, green-tipped. 

 Florets 50. Achenes glabrous. 



In Mid-Patagon., near Lago Colu-huapi; S. Patagon., by Lago Argen- 

 tine in the mountains. D. 



S. CYMOSUS Remy. 



Branching shrub ; base of stem becoming decorticate ; branches tomen- 

 tose, widely cymose at top. Upper leaves sessile, tomentose underneath, 

 narrowly serrate. Panicle simple, cymose. No calyculus; involucral 



