BLAKE.— ENCELIA AND RELATED GENERA. 369 
C. F. Pond (N).— Often confused with E. frutescens Gray, from which ~ 
the purple disk at once distinguishes it. 
o o Leaves canescent or tomentose; involucre not densely tomentose; plants 
of South America (except one species of Lower California, with cordate 
leaves). 
+ Leaves cuneate or rounded at base; plants of South America and the 
Galapagos Islands. 
— Pubescence usually soft; heads (except in starved specimens) long-pe- 
duncled; South American. 
9. E. canescens Lam. Suffrutescent below, suberect, canescent 
with a rather soft pubescence, the stem about 6 dm. long; leaves 
broadly ovate, rounded at base, obtuse or rounded at tip, canescent 
with a soft pubescence, 2.5-5 cm. long, 1.6-3.5 em. broad, on petioles 
0.5-2 em. long; inflorescence few-headed, terminal, the heads racemose 
or corymbose-panicled; disk 1-1.5 cm. in diameter; involucre 5-7 mm. 
high, its rather loose bracts lanceolate to lance-ovate, somewhat tri- 
seriate, tomentose; rays about 12, broadly oval, faintly 2-3-lobed, 
7mm. long; disk-corollas 4.5 mm. long, the short tube glandular, the 
_ teeth hairy; pales 8 mm. long, glandular-hairy on the back; achenes 
6 mm. long, 2.7 mm. wide, blackish with narrow white villous margin, 
pilose down the middle of the sides, awnless. 
Encelia canescens Lam. Encycl. Method. ii. 356 (1786); Cav. Icon. 
i. 45. t. 61 (1791). 
Coreopsis limensis Jacq. Coll. ii. 299 (1788), & Icon. Pl. Rar. iii. t. 
594 (1786-1793). 
Enselia limensis Jacq. Coll. 1. c. 300; Encelia limensis Steud. Nom. 
ed. 2. 420 (1840). 
Pallasia halimifolia L’Hér. in Ait. Hort. Kew. iii. 498 (1789). 
Encelia alternifolia Raeuschel, Nom. ed. 3. 251 (1797). 
Eucalia canescens Raeusch. |. c. (1797). 
Specimens examined: Peru: dry seacoast, Payta, Col. Hall (G); 
Lima and San Lorenzo, Gaudichaud 112 (G); without definite locality, 
Dombey (G), McLean (G); Wilkes Expl. Exp. (N), approaching var. 
oblongifolia; Curr: sandy places, Copiapo, Sept. 1854, Lechler 2801 
(G).— Passes into the following varieties. 3 
98. E. canescens Lam. var. PaRvIFOLIA (HBK.) J. Ball. Pubes- 
“ont denser, almost tomentose; leaves rhombic-ovate or ovate-lanceo- 
ha 
te, cuneate at base, acute or subacute at tip; achenes rather more 
iry. 
Encelia parvifolia HBK. Nov. Gen. iv. 206 (1820). 
