GREENMAN. — NEW ANGIOSPERMS FROM MEXICO. 103 



branches, usually on long slender peduncles: involucre 3-seriate ; bracts 

 of the involucre narrowly ovate-lanceolate, about 8 mm. long, acute, 

 appressed-pubesceut ; the outer sometimes a little shorter ; the inner- 

 most more oblong and thinner : ray-flowers neutral, few, 5 to 8, yellow : 

 disk-flowers 20 to 30 ; pales of the receptacle somewhat keeled, and 

 purplish along the median line : achenes pubescent, maculate with 

 purple-magenta patches. — Mkxico. State of Chihuahua : in the 

 Sierra Madre, near Seven Star Mine, altitude 2450 m., 28 August, 

 1899, Townsend S^ Barber, no. 380 (hb. Gr.). This species is nearly 

 allied to Asptlia angastifolia, Gray, but it differs in the longer, less 

 pubescent leaves, and in the more acuminate outer bracts of the 

 involucre. 



Viguiera brevifolia. A much-branched shrub, 1 m. or less in 

 height : stems terete, covered with a grayish bark ; ultimate branches 

 canous-strigose : leaves opposite below, alternate above, lanceolate- 

 triangular to somewhat ovate, acute to obtuse, entire or subcrenate and 

 revolute-margined, mostly abruptly narrowed at the base into a short 

 petiole, densely appressed-canous-pubescent on both surfaces, espe- 

 cially beneath and on the short petioles : heads 1 cm. or less high, ter- 

 minating the stem and branches, on long slender peduncles, radiate, 

 including the rays about 1.5 cm. in diameter : involucre campanulate ; 

 bracts of the involucre 2-3-seriate, lanceolate to ovate, acute, about 

 4 mm. long, externally cauous-appressed-pubescent : ray-flowers 8 to 

 10; rays oblong, 6 to 7 mm. long, yellow : disk-flowers numerous, 50 

 to 60 : pappus of two slender aristae, equalling or slightly exceeding the 

 intermediate lacerated scales : mature achenes 3 mm. long, sparingly 

 pubescent. — Mexico. State of Durango : Mapimi, 21 to 23 October, 

 1898, Dr. Edward Palmer, no. 527 (hb. Gr., and hb. U. S. Nat. Mus.). 



In general habit this species most resembles the Lower Californian 

 Viguiei-a microjjhylla, Vasey & Eose, but is readily distinguished from 

 it by the character of the inflorescence. 



Viguiera cokdifolia. Gray, var. latisquama. Habit, cauline, 

 foliar and inflorescence characters of the type of the species : involucral 

 bracts imbricated, 3-seriate, linear-oblong, 2 to 3.5 mm. broad, somewhat 

 rounded or very abruptly narrowed at the tip and terminated by a 

 mucro ; the outer bracts shorter than the inner ones : floral and achenial 

 characters of the species proper. — Mexico. State of Durango : vicinity 

 of the City of Durango, September, 1896, Dr. Edward Palmer, no. 

 667, and no. 747 (hb. Gr.). 



A very distinct variety, and possibly worthy of specific rank. 



