MACLOSKIE : COMPOSITE. 837 



d. Glabrous. 



e. Leaves linear, entire or 2-toothed. Bracts crowded, setaceous, ibari. 

 e2. Leaves pinnately lobed. incisus. 



e$. Leaves large, broad, pinnatifid, the upper amplexicaul. Tall. Heads mid- 

 sized, auriculatus. 

 d2. Hoary-tomentose. 

 e. Leaves linear. 



/. Branches becoming naked, white. alblcaulis. 



f2. Low. Silky tomentose when young. sericeus. 



/3. Leaves fascicled, revolute-margined. Heads small, constricted. 



danyausi. 



e2. Tall. Leaves oblong, basicordate. Heads large. smithii. 



e$. Prostrate. Leaves rather narrow, often cuneate, trifid. darwinii. 



3. Radiate and calyculate. Shrubs. 



c. Glabrous. Leaves linear, entire. bracteolatus. 



C2. Glaucous-glabrous. Leaves pectinate. Heads tomentose. ctenophyllus. 



c$. Tomentose. Leaves linear-subulate, entire. caricifolius. 



4. Scabrous. Leaves broad-linear. Entire. Heads broad. limbardioides. 



A$. Paniculati. Heads numerous, panicled. 



b. Discoid. Appressed, silky shrub. Leaves linear. doeringii. 



b2. Subdiscoid. Glabrous herb. Leaves broad-lanceolate, basicordate. otites. 

 3. Radiate. 



c. Woolly herb.' Leaves fleshy, subreniform, glabrate on upper surface, websteri. 



C2. Tomentose shrub, with white branches. Leaves pinnatifid. Heads twice as long as 



broad. leucostachys. 



A6. Various. 



b. Involucral scales i -seriate, with membranous, sublacerous margins, shorter than the 



flowers. 



c. Branching from the base. laseguei. 



c2. Prostrate, branching, tomentose. Leaves oblong, linear, sessile, entire. 



exilis. 

 b2. Heads 1-8 on the branches, radiate, smooth, calyculate, leaves linear-filiform. 



mendocinus. 

 b$. Large cottony leaves : odor of celery. Rest unknown. candicans. 



i. SENECIO ACANTHIFOLIUS Homb. & Jacq. 



Corymbose. Erect, glabrous or pubescent herbs. Stem hollow, simple, 

 sulcate. Lower leaves long-petioled, oblong-ovate, basicordate, margins 

 lobed, the lobes coarsely crenate ; petioles winged, sheathing at base. 

 Upper leaves sessile, semi-amplexicaul. Heads radiate. Involucre broad, 

 its scales i -seriate. 



Magellan and Fuegia, to Cape Horn, passim. Handsome and abun- 

 dant in the woods and by streams, " in steppe-regions and forest-regions 

 of mean moisture." 



