370 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Encelia canescens var. jxirvifolia J. Ball, Joiirn. Linn. Soc. xxii. 

 151 (1887). 



Pallasia procumhens Spreng. Sys. iii. GIO (182G). 



Encelia paucifolia Walp. Linnaea xiv. 505 (1840) [err. cler.]. 



Encelia pilocarpa Rusby, Bull. N. Y. Bot. Gard. viii. 131 (1912). 



Specimens examined: Peru: Arequipa, 8 Aug. 1901, Williams 

 2526 (GN, type number of E. pilocarpa); without definite locality, 

 McLean (G); Chili: desert of Atacama, Sept. -Oct. 1890, Morong 

 1311 (FGN, distr. as E. tomentosa Walp.) ; sandy places near Caldera, 

 May 1882, Ball (G). With no locality: Wilkes Expl. Exp. (N). 



97. E. CANESCENS Lam. var. TOMENTOSA (Walp.) J. Ball. Appar- 

 ently more frutescent; stem and the small broadly ovate blunt short- 

 petioled leaves densely white-woolly. 



Encelia tomentosa Walp. Linnaea xiv. 504 (1840). 



Encelia canescens var. tomentosa J. Ball, Journ. Linn. Soc. xxii. 160 

 (1887). 



Specimens examined: South America: Wilkes Expl. Exp., without 

 locality (N). Walpers says of his species: "e Chili misit Filter." 



95. E. CANESCENS Lam. var. oblongifolia (DC.) Blake, n. comb. 

 Leaves oblong-lanceolate to rhombic-ovate, somewhat less pubescent 

 than in the typical form, about the shape of those of var. parvifolia 

 but much less pubescent; heads apparently fewer, on much longer 

 peduncles. 



Encelia oblongifolia DC. Prod. v. 567 (1836). 



Specimens examined: Chili: Coquimbo, Gaudichaud 85 & 86 (G, 

 cotype); Coquimbo, July-Aug. 1856, Harvey (G); without definite 

 locality, Gay (G). 



Pubescence harsh; heads racemose, on peduncles about 3 cm. long; 



plant of the Galapagos Islands. 



10. E. HisPiDA Anderss. Branching, erect, 0.6-1 m. high, canescent 

 with a dense hispid pubescence, the branches striate; leaves oblong, 

 cuneate at base, subentire or repandly toothed, 4-5 cm. long, 1.4-2.2 

 cm. broad, on spreading-hirtous petioles 1-1.8 cm. long, appressed- 

 hirsutulous above, more densely so beneath particularly along the 

 veins; heads racemose in inflorescences terminating the branches, 

 the arcuate-spreading peduncles linear-bracted at base, 2-3.5 cm. long, 

 densely villous-hispid; heads small, 8 mm. high, 9-11 mm. wide 

 exclusive of rays; involucre 4-5 mm. high, the scales lanceolate, 2- 

 seriate, somewhat unequal, densely villous-hispid, the outer a little 

 loose; rays oval, tridentate, pubescent on the back, 4.2 mm. long; 

 disk-corollas 3.5-4.5 mm. long, the short tube and teeth pubescent; 



