. 
260 PROCEEDINGS OF THE AMERICAN ACADEMY, . 
lateral veins beneath: inflorescence a terminal leafy hirsute-pubescent 
many-headed panicle; peduncles 6 mm. or less in length, slender ; bracts 
of the ultimate inflorescences lanceolate to subsetaceous: heads of the 
staminate flowers about 5 mm. high and broad, about 25-flowered: involu- 
cre campanulate, 3-seriate; bracts of the involucre lanceolate, purplish, 
the outer acute, the inner longer, obtuse, and more or less scarious on the 
margins and at the tip: pistillate flowers unknown. — Mexico. State of 
Oaxaca: in wet ravines, Sierra de San Felipe, altitude 2285 m., 11 
December, 1895, C. G. Pringle, no. 7014 (hb. Gr.). 
In foliar characters B. Pringlet suggests B. oaxacana, Greenm., from 
which, however, it is easily distinguished by its larger acuminate leaves, 
many-headed paniculate inflorescence, smaller heads, and finally by the 
absence of glandular hairs on the stem and in the inflorescence. 
Melampodium Nelsonii, n. sp. Perennial: stems ascending or 
erect, much-branched, hirsute-pubescent : leaves sessile, linear-lanceolate, 
1.5 to 5 cm. long, 1 to 4 mm. broad, entire and undivided or pinnately 
3-cleft into linear divaricately spreading divisions, pubescent above, densely 
sericeous-villous beneath, revolute-margined: peduncles rather slender, 
1 to 8 cm. in length, pubescent with spreading hairs: heads including 
the conspicuous orange-yellow rays 1 to 1.5 cm. in diameter: outer in- 
volucral bracts herbaceous, ovate-deltoid, gradually narrowed to an acute 
apex, densely hirsute-pubescent : ray-flowers about 12; rays oblong, 5 to 
6 mm. long, 3 mm. broad: fruit somewhat quadrangular in cross-section, 
ribbed on the sides, and more or less tuberculate ; the hood conspicuously 
developed and usually prolonged into a spirally coiled puberulent appen- 
dage.— Mexico. State of Michoacan: Volcano of Jorullo, 28 March, 
1903, Z. W. Nelson, no. 6939 (hb. Gr., and hb. U. S. Nat. Mus.). 
The fruit characters place M. Nelsonii in the § Eumelampodium neat 
M. longipes, Rob., from which species, however, Mr. Nelson’s plant iB 
readily separated by the distinctly ligneous stem, more numerous Fay- 
flowers, longer rays, and a ribbed fruit. In habit M. Ne/sonii assimilates 
M. heterophyllum, Lag., but differs in having a well-developed hood with : 
an attenuated coiled appendage, narrower leaves, and a more densely 
pubescent upper leaf-surface. : 
Sanvitatropsis, Schz. Bip. Among Liebmann’s plants of Mexico }8 
one which was determined by Schultz Bipontinus as “+ Sanvitaliops's 
Liebmanii.” The earliest reference to Sanvitaliopsis appears in Ben- 
tham and Hooker’s Genera Plantarum, where it is mentioned under 4” 
nia with the following brief characterization: “ Sanvitaliopsis, Seba 
Bip.in Pl. Liebm. est species habitu Heliopsidis, acheniis tamen 2-arista- 
