106 PROCEEDINGS OF THE AMERICAN ACADEMY. 
appressed-hirsute-pubescent above, rather densely soft-tomentose beneath: 
heads large, about 2 cm. high, 4 to 5 cm. broad, terminating the stem 
and branches on 2 to 6 em. long slightly thickened upwardly densely 
white-lanate peduncles: involucre campanulate; bracts of the involucre 
2-3-seriate, lance-attenuate, 3 cm. or less in length, about 5 cm. in 
breadth, more or less foliaceous and recurved at the tip, sericeous- 
pubescent: ray-flowers about 16, neutral; rays 12 to 15 mm. long, 5 mm. 
broad: disk-flowers numerous: pappus of 1 or 2 unequal subpaleaceous 
deciduous awns and shorter deeply lacerated intermediate persistent 
scales: corollas apparently roseate or somewhat pink in color: mature 
achenes about 6 mm. long, densely appressed-pubescent. — MrExico. 
State of Zacatecas: near Plateado on the road from Colatlan, 31 August, 
1897, Dr. J. N. Rose, no. 2710 (hb. Gr., and hb. U. S. Nat. Mus.). 
Notwithstanding the superficial resemblance this plant bears to the 
genus Jithonia, on account of the robust habit and large heads, the real 
affinity seems to be with the genus Viguiera, and is closely related to 
V. deeurrens, Gray, and V. excelsa, Benth. & Hook. The writer takes 
pleasure in dedicating the species to its collector, Dr. J. N. Rose of 
the U. S. National Museum, Washington, D. 
Altamirania, n. gen. of Composite ( Vacleatiaa’. Heads heteroga- 
mous, radiate. Involucre campanulate ; bracts 2—3-seriate. Receptacle 
convex or conical; pales of the receptacle conduplicate, keeled. Ray- 
flowers uniseriate, fertile; achenes triangular. Corollas of the disk- 
flowers regular; tube short, ampliated above into an elongated-cylindrical 
5-toothed limb. Anthers minutely dentate at the base, appendaged at 
the apex. Style-branches obtuse. Achenes of the disk-flowers laterally 
compressed-4-angled. Pappus of 2 to 3 paleaceous awns, with 1 to 3 
lacerated scales between, persistent. Erect suffruticose (?) plants with 
opposite leaves and terminal cymose inflorescence. 
A.pachyphylla. An erect suffruticose (?) plant, glabrous through- 
out, or slightly puberulent on the peduncles: stem striate, purplish: 
leaves lanceolate or somewhat oblanceolate, 5 to 12 cm. long, 1.5 to 
3.5 cm. broad, acute or acuminate-acute, dentate, narrowed below to a 
subpetiolate base, smooth on both surfaces, dark- or somewhat olive- 
green above, paler beneath: heads 1 em. or less high, including the rays 
3 to 4 cm. in diameter, disposed in terminal edicocmed corymbose cymes: 
involucral scales linear, obtusish, slightly thickened and more or less 
spreading: ray-flowers 8 to 10; rays narrowly oblong about 1.5 cm. 
long, 3 mm. broad: disk-flowers numerous; the paleaceous awns about 
_ one-half as long as the corolla; achenes tapering toward the base, cilio- 
