MACLOSKIE : COMPOSITE. 853 



58. SENECIO MENDOCINUS Phil. 



Heads radiate, 1-8 on branches naked above, on rather long peduncles. 

 Glabrous shrub with fleshy, linear-filiform leaves, acute, crowded, and 

 peduncles few-bracteate, invohicre calyculate, with about 13 scales, 

 marginally scarious, not apically sphacelate. Ligules 8-10. Achenes 

 very shortly hispid. 



N. Patagon., by Rio Negro. 



59. S. MICROCEPHALUS DC. (S. patagonicus H. & A.) 



Corymbose, 5-y-headed, heads discoid. Tomentose shmb. Leaves 

 rigid, suberect, linear-oblong or oblong-lanceolate, subacute, entire, me- 

 dially canaliculate above, margin revolute. Pedicels long. Involucre 

 broad, calyculate, its scales linear-oblong, subacute to acuminate, shorter 

 than the corollas. 



(Chili) ; Magellan, at Port Famine ; Fuegia, by Beagle Channel. 



S. MICROCEPHALUS ACLONETUS (Ph.) O. Ktze. 



A radiate form, its young not branched. 



60. S. MICROCEPHALUS HOOKERI (Homb. & Jacq.) (sub S. patagonicus]. 



Stems low, 12-14 cm - much branching, densely leafy. Leaves fas- 

 ciculate, lance-linear, basiattenuate, apically few-toothed, margin revolute. 

 Peduncles thick, short. (Alboff.) 



Fuegia. 



61. S. MICROPIFOLIUS DC. 



Heads 1-8, discoid, midsized, in terminal, bracteolate corymbs. To- 

 mentose perennial, 30 cm. high, with erect, leafy branches ; base of stem 

 woody, leafless. Leaves sessile, oblong, with revolute margin, entire, 

 ending in a dark point. Branches leafy to the top. Involucre "ovate," 

 its scales about 15, woolly, but apically sphacelate, slightly shorter than 

 the disk. Disk-flowers 30. Achenes glabrous. 



(S. Amer. ; Cordilleras of Chili) ; S. Patagon., by Hatcher at Cabo 

 Negro and Coy Inlet, Dec. 20 ; Fuegia. 



(The involucre is not ovate but campanulate and calyculate, with a few 

 minute bracteoles. Leaves 2 cm. long. Otherwise it agrees with the 

 description of DC. Prodr., vi, 413.) 



