48 PROCEEDINGS OF THE AMERICAN ACADEMY, 
disk-flowers of 2 anterior lance-attenuate paleaceous aristae 8 to 10 mm. 
- in length, and of 3 posterior more or less coalescent pales less than one- 
half the length of the outer or anterior ones, at maturity grayish purple: 
mature achenes 8 to 9 mm. long, puberulent.— Mexico. State of 
Jalisco: on dry rocky mountains above Etzatlan, altitude 610 to 
915 m., 2 October, 1903, C. G. Pringle, no. 8768 (hb. Gr.). 
HyMENATHERUM AUREUM, Gray, Proc. Am. Acad. xix. 42 (1883); 
Syn. Fl. i, pt. 2, 359. The following specimens are identified with 
this species: Mextco. State of Chihuahua: Colonia Diaz, 20-21 Sep- 
tember, 1899, #. W. Nelson, no. 6446 (hb. Gr., and hb. U.S. Nat. 
Mus.). Although H. aureum is well known from Texas to Colorado, 
it seems not to have been hitherto recorded from Mexico. 
Porophyllum Holwayanum, n. sp. Sbrub 1 to 1.5 m. high, 
glabrous throughout: stem covered with a brownish cortex: leaves alter- 
nate, petiolate, elliptic-oblong, 1.5 to 5 em. long, 7 to 22 mm. broad, 
rounded and submucronate at the apex, crenate-margined, narrowed at 
the base into a slender 5 to 12 mm. long petiole; glands chiefly marginal, 
from 5 to 12 on each half of the blade, and a single gland terminating 
the midnerve: heads numerous, about 2 cm. long, nodding on slender 
1 to 1.5 em. long peduncles, disposed in a terminal leafy panicle: in- 
volucre cylindrical, 16 to 17 mm. long, green or slightly purplish; 
bracts of the involucre 5, narrowly oblong, obtuse: flowers usually 14, 
exceeding the .involucre; corolla with a slender tube about equalling the 
pappus, and a narrowly campanulate 5-toothed limb, yellowish-green or 
not infrequently slightly purplish-tinged at the base of the limb: anthers 
purplish: achenes puberulent, about 1 cm. in length. — Mexico. State 
of Jalisco: Sayula, 8 October, 1903, Z. W. D. Holway, no. 5130 (hb. 
Gr.); near Chapala, 5 October, 1903, Rose & Painter, no. 7652 (hb. 
Gray, and hb. U. S, Nat. Mus.). A species nearly related to P. nutans, 
Rob. & Greenm., but differing in the uniformly larger leaves, longer | 
involucre and more numerous marginal leaf-glands. 
7 Pectis (§ Pectothrix) Barberi, n. sp. Annual, scapose, simple 
or branched from the base: leaves rosulate, oblanceolate, 1 to 2 em. long; 
2 to 5 mm. broad; obtuse or subsetiferous-mucronate, setiferous-ciliate at 
the narrowed base, otherwise entire, glabrous on both surfaces, paler 
beneath : glands of the leaves marginal: scape 0.5 to 1.5 dm. high, 
slender, minutely bracteate, bearing a single terminal head: heads. 8 to 
_ 10 mm. high, including the rays 1 to 1.5 em. in diameter: involucré 
i pastowly campanulate, 5 to 6 mm, high, glabrous and purplish; bracts 
of the involucre usually 13, lanceolate or narrowly oblong, obtuse, scat 
