48 PROCEEDINGS OP 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 : Mexico. State of Chihuahua: Colonia Diaz, 20-21 Sep- 

 tember, 1899, E. 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. 



Poropliyllum Holwayanum, n. sp. Shrub 1 to 1.5 m. high, 

 glabrous throughout: stem covered with a brownish cortex: leaves alter- 

 nate, petiolate, elliptic-oblong, 1.5 to 5 cm. 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 cm. 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, E. W. D. Hohvay, no. 5130 (hb. 

 Gr.) ; near Chapala, 5 October, 1903, Rose Sf 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. 



Pectis (§ Pectothrix) Barberi, n. sp. Annual, scapose, simple 

 or branched from the base: leaves rosulate, oblanceolate, 1 to 2 cm. long, 



2 to 5 ram. 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 cm. in diameter : involucre 

 narrowly campanulate, 5 to 6 mm. high, glabrous and purplish ; bracts 

 of the involucre usually 13, lanceolate or narrowly oblong, obtuse, scari- 



