314 PROCEEDINGS OF THE AMERICAN ACADEMY. 
II.— DESCRIPTIONS OF NEW AND HITHERTO IM- 
PERFECTLY KNOWN PLANTS COLLECTED IN 
MEXICO BY C. G. PRINGLE IN 1892 AND 1893. 
ERIODENDRON TomENTOSA. Branchlets and petioles fuscous-to- 
mentose; leaves 7-foliate; leaflets narrowly lanceolate, acuminate 
in both directions, sharply and finely serrate, sparingly hirsute upon 
the veins above, fuscous-tomentose beneath especially along the 
midrib, attenuate at the base to short scarcely distinct very tomentose 
petiolules : common petiole 2-3 inches long ; stipules subulate, tomen- 
tose, persistent: peduncles short, thick: calyx turbinate-campanulate, 
14-1} inches long, finely tomentose on the outer surface, densely 
woolly within; teeth rounded, a fourth as long as the tube: petals 
red, linear-oblong, spreading, rounded at the apex, over 5 inches in 
length, 4-5 lines in breadth, silky-pubescent upon the outer surface, 
less pubescent or glabrate within : staminal tube 8 lines long, hirsute; 
free portion of the filaments spreading, exserted from the corolla ; 
anthers anfractuose. — Collected on a barranca near Guadalajara, 
June, 1892 (no. 5300). This species is distinguished from Hrioden- 
dron esculifolia, HBK., by its tomentose branchlets and foliage. The 
latter species is apparently represented by Mr. Pringle’s no. 5324, 
from hills bordering on Lake Cuitzea, Michoacan, August, 1892, 
which accords in every regard with Kunth’s description save that the 
leaflets range from 5 to 7 instead of 7 to 8. It differs, however, from 
Mogino and Sesse’s Plate 94 in the Calques des Dessins, in having 4 
glabrous calyx, and stamens really shorter than the petals; leaflets @ 
little broader and distinctly petiolulate. As the plate shows the calyx 
to be pubescent and foliage as in EL. tomentosa, it appears probable . 
that it was not drawn from £. esculifolia, as hitherto supposed, we 
really represents a distinct species, probably the Z. tomentosa just 
described. 
AYENIA GLABRA, Wats. The following additional characters may 
be given: fruit subglobose, shallowly 3-lobed, nearly 4 lines in diameter, 
light green, muriculately roughened with darker colored points ; seeds 
dull brown, strongly rugose. — Collected in the barranca of Tequila, 
2 and 17 October, 1893 (no. 4576). 
Bursera Prinevet, Wats. (Proc, Am. Acad. xxv. 145). This sp 
cies was described from fruiting specimens. Mr. Pringle’s 0. 4381, 
collected on lava beds near Zapotlan, 27 May, 1893, shows the follow- 
ing additional characters: staminate flowers yellowish green: sepals 5, 
