372 PROCEEDINGS OF THE AMERICAN ACADEMY. 



rather few, 5.5 mm. long, pubescent on tube and teeth; pales S mm. 

 long, pubescent; immature achene 2.5 mm. long, villous on the 

 margin and slightly pubescent on the sides, bearing 2 upwardly 

 pubescent awns about its own length. 



Encelia angustifolia Greenm. Proc. Am. i\cad. xxxix. 110 (1903). 



Specimen examined: Territory of Tepic: in the Sierra Madre, 

 13 Aug. 1897, Rose 3453 (G, type collection). 



-t- -t- Scapose; head solitary, terminal; leaves puberulent both sides. 



13. E. SCAPOSA Gray. Herbaceous perennial, simple and erect, 

 3.5 dm. high, the leaves all clustered at the base, the monocephalous 

 scape naked except for two linear bracts; the lowest leaves scalelike; 

 leaves linear, 3.5-8.5 cm. long, 1.5-4 mm. wide, attenuate, subsessile, 

 with whitish cartilaginous margin and tip, rough-puberulent both 

 sides; scape puberulent especially above, striate, whitish; head 1 cm. 

 high, 2 cm. wide excluding the rays; scales linear-lanceolate, subequal, 

 about 2-rowed, rather loose, white-hispid on the back; rays pubescent 

 on tube and back, apparently rather numerous, oval, 15 mm. long, 

 6 mm. wide; disk-corollas 5 mm. long, pubescent on teeth and short 

 tube; pales 10 mm. long, rather narrow, about 9-nerved, pubescent 

 above; immature achenes 4.5 mm. long, pubescent on the sides, 

 villous on margin and top, as are the two awns which are about as 

 long. 



Simsiaf {Gcraea) scaposa Gray, PI. Wright, ii. 88 (1853). 

 Encelia scaposa Gray, Proc. x\m. Acad. viii. 657 (1873). 

 Specimen examined: New Mexico: stony hills between the Mim- 

 bras and the Rio Grande, Oct. 1851, C. Wright (G, type collection). 



H— H— -1— Heads numerous, panicled; plant resinous. 



14. E. stenophylla Greene. Perennial, the stems se\eral and 

 erect from a somewhat branched wood\' base bearing the scars of 

 former leaves, more or less glutinous; leaves mostly crowded toward 

 the bases of the stems, linear, 4.5-8 cm. long, 1-2 mm. wide, mucronu- 

 late, somewhat fleshy, glutinous, slightly hairy along the margin, the 

 edges more or less re volute; heads corymbose-panicled toward tip of 

 stem, on peduncles 1-3 cm. long; disk 8 mm. high, 7-11 mm. wide; 

 in\olucre 3.5-4 mm. high, the scales lance-ovate, about 3-seriate, 

 somewhat unequal, resinous and slightly ciliate, rather strongly 

 ribbed; rays about 6, oval, entire, resin-dotted on tube and back, 

 5.5 mm. long; disk-corollas 4.5 mm. long, resin-dotted, the throat 

 broadly oblong; pales 7.5-8.3 mm. long, rounded at tip, resin-dotted; 



