14 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Barranca de Consoquitla, Liebmann, no. 108 (hb. Gr.). GUATEMALA: 
Valley of Guatemala, Hartweg (hb. Gr.) ; alt. 1550 m., J. D. Smith, 
no, 2363 (hb. Gr.); Volcan de Fuego, alt. 1550 m., /. D. Smith, no. 
2856 (hb. Gr.); Canizal alt. 1550 m., Heyde & Lux, no. 4202 of J. D. 
Smith’s distrib. (hb. Gr.). Yucatan: Merida, Valdez, no. 10; with- 
out locality, Gaumer, no. 397. Honpuras: San Pedro Sula, alt. 250 
\\ m., Thieme, no. 5236 of J. D. Smith’s distrib. (hb. Gr.); Gulf of 
Ef Fonseca, Sinclair (hb. Gr.). Costa Rica: Cartago, Cooper, no. 
5810 of J. D. Smith’s distrib.; in woods near Terraba, alt. 260 m., 
Pittier, no. 3705 (hb. Gr.). Panama: Veraguas, Seemann (hb. Gr.). 
y 16. T. Wrightii, n. sp. A much-branched shrub ; branchlets sub- 
appressed-pubescent: leaves lanceolate, 1.5 to 7 em. long, 0.5 to 2 cm. 
sile or subsessile base, more or less decurrent on the stem, thickish, 
appressed-puberulent on both surfaces to essentially glabrous, reticulate- 
panicles, 11~13-flowered; bracts of the outer involucre spatulate to obo- 
vate, 9 to 10 mm. long, 2 to 6 mm. broad; inner involucre of 8 appressed- 
pubescent scales 10 to 11 mm. in length.—Sinatoa: near Mazatlan, 
18 W. G. Wright, no. 1224 (hb. Gr.), December, 1894, 
(248) (hb. Gr.). Tres Martas Isuanps: Maria Madre 
25 May, 1897, Nelson, no. 4191 (hb. Gr.). 
II. —REVISION OF THE MEXICAN AND CENTRAL 
AMERICAN SPECIES OF HIERACIUM. » 
B. L. Roprnson anp J. M. GREENMAN. 
TurovucH a lack of accurate knowledge of the Mexican Hawk- 
_ weeds there has been for many years a tendency to crowd unlike forms 
_ago the writers made a preliminary revision of the Mexican and Central 
American species of this genus, but from the uncertainty which still ob- 
‘senred the exact application of some of the earlier specific names, it 
vestigation. Of late, however, it has been possible to gain considerable 
new light on the subject, first from numerous specimens, tracings, draw- 
ings, and authentic fragments obtained by the Gray Herbarium through 
aie entire or inconspicuously denticulate, narrowed below into a ses- 
seemed best to withhold the paper from publication pending further in- 
the purchase of the collection of the late Dr. F. W. Klatt, and second — 
esi gees i 
veiny beneath: heads about 1.5 cm. high, loosely disposed in corymbose 
into certain of the older and vaguely characterized species. Some years . 
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