| 
GREENMAN.— NEW ANGIOSPERMS FROM MEXICO. 107 
late on the margins, glabrous on the surface, at maturity 3 to 4 mm. in 
length. ? Aspilia pachyphylla, Klatt, Leopoldina, xxiii. 143 (reprint, 
p. 4).— Mexico. State of Oaxaca: near Totontepec, altitude 1125 to 
1625 m., 15 to 28 July, 1894, #. W. Nelson, no 829 (hb. Gr., and hb. 
U.S. Nat. Mus.). 
But for the fertile ray-flowers and the diverse habit the plant here 
described might be referred to the genus Viguiera. From Encelia it 
differs in the character of the ray-flowers, and in the distinctly 4-angled 
achenes of the disk-flowers. From Verbesina it differs in the achenial 
characters, namely, in being 4-angled and not distinctly winged, and also 
in the nature of the pappus. Although bearing a certain affinity with 
the three genera here mentioned, it differs in the important characters 
enumerated, hence it seems best to give it generic rank with a position 
in the natural sequence near Viguiera. 
The genus is dedicated to Dr. Fernando Altamirano, Professor at the 
School of Medicine, and Director of the National Medical Institute, 
City of Mexico. 
Helianthus oaxacanus. Stems striate, terete and glabrous below, 
subangled and minutely appressed-puberulent above, especially in the 
inflorescence: leaves alternate (at least the upper ones), petiolate, broadly 
ovate, acute, 4 to 14 em. long, 2 to 8 cm. broad, dentate to subentire, 
often reyolute-margined, rounded or abruptly narrowed at the base into 
a 1 to 3.5 em. long petiole, glabrous or essentially so on both surfaces, 
3-nerved: inflorescence a terminal comparatively few-headed leafy pan- 
iculate cyme: heads large, 1.5 to 2 cm. high, including the rays 4 to 
5 cm. in diameter: involucre campanulate; bracts of the involucre 
2-3-seriate, imbricated, lanceolate, acuminate, acute; the outer bracts 
shorter than the inner ones; ray-flowers 12 to 15, neutral; rays yel- 
low, oblong, 1.5 em. or more long, 6 to 7 mm. broad: disk-flowers 
numerous: pappus of two rather large unequal paleaceous awns with 
smaller intermediate persistent erose scales: achenes appressed-sericeous 
pubescent. — Mexico. Between Huajuapam, State of Oaxaca, and 
Retlatzingo, State of Puebla, altitude 1450 to 2000 m., 19 November, 
1894, H. W. Nelson, no. 1985 (hb. Gr., and hb. U. S. Nat. Mus.). 
Hetiantivus PETIOLARIS, Nutt. Jour. Acad. Phil. ii. 115. Speci- 
mens referable to this species were collected by Townsend & Barber in 
the Sierra Madre near Rio de Aroz, State of Chihuahua, Mexico, alti- 
tude 2300 m., 3 September, 1899, no. 403 (hb. Gr.). The specimens at 
hand agree well with the more northern representatives of the species, 
except for the somewhat narrower involucral bracts in which character 
they approach the variety canescens. 
