44 PROCEEDINGS OF THE AMERICAN ACADEMY. 



tomentose, also somewhat glandular and villous, purplish : leaves ample, 

 ovate, acuminate at the apex, acute at the petiolate base, dentate, tomen- 

 tose on both surfaces, pale beneath, 3 to 5 inches long, nearly Ih to 2 

 inches broad, scabrous on the margins : petioles 4 or 5 lines long, densely 

 pubescent: iuHorescences enveloped in ovate-lanceolate acuminate pubes- 

 cent and ciliate bracts (6 to 8 lines long, 2 to 3 lines broad) : involucres 

 numerous, closely aggregated, villous, 3 lines in length, 1 -flowered, un- 

 equally dentate, glandular in lines : corolla long, 6 lines in length, exter- 

 nally pubescent, the ampliate cylindrical throat exceeding the limb and 

 the more slender proper tube : mature achenes not seen. — Collected by 

 E. W. Nelson between Ayusina and Petatlan, Guerrero, altitude 5,000 

 to 7,000 feet, 14 December, 1894, no. 2121. 



Trigonospermum tomentosum. Stout branching pubescent 

 herb: stem terete, brownish or dark colored: leaves rhombic-ovate, 3- 

 nerved from above the abruptly contracted then cuueately narrowed 

 base, serrulate, acuminate, green and becoming scabrous above, paler 

 and densely tomentose beneath, including the narrowed petiole-like base, 

 4 to 8 inches long, half as broad : inflorescence a much branched corym- 

 bose panicle, densely covered with short dark glandular-tipped hairs ; 

 bracts subulate : heads half inch in diameter : involucral scales about 

 2-seriate; the outer oblong, acutish, 3-nerved, ciliated; the inner broadly 

 obovate, abruptly acuminate : ray-flowers 5 ; ligules broad, reversed-del- 

 toid, deeply 3-lobed, bright orange-yellow, Sh lines long ; disk-flowers 

 about 25, concolorous : chaff hyaline, obovate-cuneate to suborbicular, 

 ciliated. — Collected by E. W. Nelson on the western slope of Mt. 

 Zempoaltepec, Oaxaca, altitude 7,700 to 8,000 feet, 5 to 13 July, 1894, 

 nos. 610, 617, and later between Panixtlahuaca and Jaquila, altitude 

 1,000 feet, 26 February, 1895. 



Montanoa macrolepis. Stem, 3 to 5 feet in height, terete, fuscous, 

 glabrous or somewhat pubescent : leaves opposite, sinuately 3-lobed ; the 

 lamina 3 to 5 inches long, 2 to 3 inches broad, very scabrous-pubescent 

 above, somewhat paler and sparsely pubescent or glabrate beneath, 3- 

 nerved above the base, and contracted below to a somewhat toothed wing, 

 which does not quite reach the stem but terminates gradually or abruptly 

 (usually with two rounded auricles), leaving a short naked petiole; 

 lobes undulate-denticulate ; the lateral short, broad, blunt or again sub- 

 bilobed ; the terminal ovate, obtuse, acutish or even acuminate : heads 

 rather few and large, cymose-corymbed, individually pedunculate or 

 grouped by 2's or 3's at the ends of the branches : involucral scales sub- 

 biseriate, oblong, obtuse or rounded at the apex, 3^ lines long: ray- 



