BLAKE. — EXCELTA AND RELATED GENERA. 371 



pales 4.7 mm. long, upwardly villous; achenes (not quite mature) 

 narrowly obovate, 4.5 mm. long, villous on margin and pubescent 

 medially on the sides. 



Encelia hispida Anderss. Oai Galap.-Oarnes Veg. 73 (1853). 



Specimens examined: Galapagos Islands: dry grassy places, 

 Chatham and Charles Islands, Andersson (G, type collection). 



+ + Mature leaves cordate-ovate; plant of Lower California. 



11. E. Palmeri Vasey & Rose. Suffrutescent, branched, 1 m. high, 

 the stems whitened with a dense hispid pubescence, the branches 

 rather sharply angled; leaves broadly ovate, cordate or rarely trun- 

 cate at base, rounded or obtuse at apex or the younger acute, hispid- 

 canescent on both sides or sometimes almost velutinous, entire or 

 with blunt triangular teeth, 1.5-4 cm. long, 1.1-3.5 cm. broad, on 

 petioles 3-10 mm. long, with ampliated base; heads peduncled, several 

 in a glandular-hispid paniculate inflorescence, the bracts minute; 

 disk 1-2 cm. broad; involucre 1 cm. high, the rather loose scales 

 lanceolate to linear-lanceolate, triseriate, somewhat unequal, glandular 

 on the back, densely villous on sides nearly to tip, somewhat pubescent 

 inside; rays about 20, 10 mm. long, broadly oval, slightly trilobed, 

 pilose on tube and back; disk-corollas 5 mm. long, nearly glabrous, 

 the disk brownish purple; pale 8 mm. long, glandular-pubescent on 

 the back above; achenes 4.5 mm. long, villous on the angles and 

 slightly pubescent down the midline of the sides. 



Encelia Palmeri Vasey & Rose, Proc. U. S. Nat. Mus. xi. 535 (1889). 



Specimens examined: Lower California: Lagoon Head, 6-15 

 Mar. 1889, Palmer 805 (FGN, type collection) : San Jose del Cabo, 

 Mar.-June 1897, Anthony 326 (GN); La Paz, 20 Jan.-5 Feb. 1890, 

 Palmer 15 (GN). 



* * * Angustifoliae. Leaves narrowly linear; awns present; disk yellow. 

 -<— Leafy-stemmed; heads solitary, terminal; leaves glabrous beneath. 



12. E. angustifolia Greenm. An herbaceous perennial, the 

 stems several, erect, 3-4 dm. high, striate, purplish below, slightly 

 pubescent above, from a woody root; leaves scattered, narrowly 

 linear, attenuate, subsessile, wdth 3 strong somewhat reticulated 

 nerves, glabrous or nearly so below, appressed-hirsutulous above, 2.5-8 

 cm. long, 1.5-2.5 mm. wide, remotely serrulate; heads pedunculate, 

 solitary, terminating the stems, about 1 cm. high, the peduncle 

 bearing a slender bract just below the head; scales apparently 

 few and rather loose, lance-attenuate, ciliate, 1-2-seriate; rays about 

 5, oblong, bareh^ tridentate, 15 mm. long, 4 mm. wide; disk-corollas 



