MACLOSKIE : COMPOSITE. 843 



SENECIO DANYAUSII LOBATIFOLIUS Homb. &Jacq. 



Leaves serrate or pinnatifid. 

 E. Fuegia (Dusen). 



S. DANYAUSII PINNATIFIDUS Mad., Fl. 



Very like S. danyausii lobatifolius, except that the leaves are somewhat 

 more deeply serrate or pinnatifid. (Determined by Dr. O. Hoffmann.) 

 By Hatcher at Rio Sta. Cruz, S. Patagon., Jan., 1897. 



21. S. DARWINII Hook. & Arn. 



Heads radiate. Low, prostrate shrubs, much branching. Leaves 

 woolly, much as in S. falklandiciis, but generally cuneate and trifid or tri- 

 lobate or repand-dentate. Peduncles long, or heads sessile among the 

 upper leaves. 



Magellan, Fuegia. 



S. DARWINII ERADIATUS Gray. 



Low, condensed, leaves small. Ligules none. 

 Fuegia, at Orange Harbor. 



22. S. DELFINI Phil. 



Corymb lax, many-headed. Tall, glabrous herb, with simple, fistulous 

 stem. Leaves pinnatifid, to 9 pairs, the segments narrow-linear. Lower 

 Peduncles very long, naked or i -leaved, 3-5 headed, with bracteolate 

 pedicels. Heads 6 mm. in diameter, non-calyculate ; involucral scales 10. 

 Achenes white silky. 



Valley of Rio Palena, west of the Cordillera. 



23. S. DESIDERATUS DC. 



Subcorymbose, few-headed. Glabrous undershrub, with terete branches 

 and sessile, pinnatipartite leaves, having linear rachis, and 6-8 pairs of seg- 

 ments, these acute and undivided or bipartite to their base ; the uppermost 

 linear, entire. Floriferous branches bracteate. Involucre ovate, calycu- 

 late, its scales about 10, acute, non-sphacelate. Ligules 10, many-nerved; 

 disk-flowers 25-30. Achenes slightly hairy. 



S. Patagon., by Puerto Deseado ; Magellan, Golfo de San Jorge. 



