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-pubescent ; 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. — Mexico. State of Chihuahua: in the 
Sierra Madre, near Seven Star Mine, altitude 2450 m., 28 August, 
1899, Townsend & Barber, no. 880 (hb. Gr.). This species is nearly 
allied to Aspilia angustifolia, 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 suberenate 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 canous-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 ariste, equalling or slightly exceeding the 
intermediate lacerated scales: mature achenes 8 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 
Viguiera microphylla, Vasey & Rose, but is readily distinguished from 
it by the character of the inflorescence. 
Vicurera corpiro.iA, 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, ink possibly worthy of specific rank. 
