330 PROCEEDINGS OF THE AMERICAN ACADEMY. 
ceeding the gradually ampliated throat: achenes slender, brown, attenu- 
ate below, 3 mm. long. — Collected by E. W. Nelson on eastern slope 
of Mt. Orizaba, altitude 1,500 to 2,100 m., 21 March, 1894, no. 304. 
Near £. subpenninervium, Klatt, but with smaller more numerous heads, 
and with petioles 2 to 3 times as long, ete. 
E. avBicaute, Sch. Bip. in Klatt, Leopoldina, xx. 89 (1884).. Add 
syn. E. drepanophyllum, Klatt, Ann. k. k. Naturh. Hofmus. Wien, ix. 
356 (1894). The type of the latter species stated by Dr. Klatt as col- 
lected by Sauwne is Gaumer’s no. 122 from Cozumel Isl. 
E. avprcauce, Sch. Bip., var. laxius. Inflorescence somewhat looser 
than in the type: scales of the involucre linear-attenuate, 5 mm. long. — 
Collected by Dr. Edward Palmer in Ymala, Mexico, 16 to 25 August, 
1891, no. 1474 (type) and by Dr. J. N. Rose at Rosario, Sinaloa, 7 
July, 1897, no. 1566. Dr. Rose’s no. 1839 from the same locality is 
probably the same, although the inflorescence is still more open. 
E. amblyolepis. Smoothish herb or undershrub, 3 to 6 dm. high; 
stems slender, terete, at first puberulent, soon glabrate and lucid, copi- 
ously branched; branches opposite, ascending: leaves opposite, lanceo- 
late, acute to attenuate at each end, serrulate to subentire, thin, green, 
glabrous, and somewhat lucid, minutely pellucid-punctate, 5.5 em. long; 
1.5 em. broad, 3-nerved from somewhat above the cuneate base ; petioles 
4 to 6 mm. long: heads small, numerous, in flat-topped corymbs ; pedi- 
cels 5 to 8 mm. long, bracteolate near the summit; involucral bracts 
about 13, in 2 subequal series, obovate-oblong, pale green, striate, 
rounded and ciliolate at the summit, 3 mm. long, at length spreading? 
flowers about 15, small: corolla probably white, 3.5 mm. long, somewhat 
exceeding the very delicate and rather sparse bright white pappus: achenes 
1.5 mm. long, black, minutely roughened on the sharp angles. — Collec 
by C. G. Pringle on cool ledges of the Sierra de Tepoxtlan, 24 km. north- 
east of Cuernavaca, altitude 2,300 m., 7 February, 1899, no. 8034. 
E. arzoxare, DC., var. leiocarpum. Nearly glabrous throughout: 
flowers somewhat larger than in the typical form and borne in condensed 
cymes: achenes smooth. — Collected by E. W. Nelson, near Chilpan- 
cingo, Guerrero, Mexico, altitude 2,700 to 3,100 m., 24 December, 1894, 
no. 2221. Types in herb. Gray and herb. U. S. Nat. Museum. There 
are no marked differences between the typical form of this species and the 
later ZH. tubiflorum, Benth. Pl. Hartw. 76, so far as the tolerably detailed 
descriptions indicate. Hemsley refers to Ghiesbreght’s no. 530 under 
both names. The vaguely characterized HZ. papantlense of Lessing may 
perhaps be the same. 
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