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-fuliate ; 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, 

 1J-1J 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 Erioden- 

 dron cBsculifolia, 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 

 Mocino and Sesse's Plate 94 in the Caiques des Dessins, in having a 

 glabrous calyx, and stamens really shorter than the petals ; leaflets a 

 little broader and distinctly petiolulate. As the plate shows the calyx 

 to be pubescent and foliage as in E. tomentosa, it appears probable 

 that it was not drawn from E. cescidifolia, as hitherto supposed, but 

 really represents a distinct species, probably the E. 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 Pringlei. Wats. (Proc. Am. Acad. xxv. 145). This spe- 

 cies was described from fruiting specimens. Mr. Pringle's no. 4381, 

 collected on lava beds near Zapotlan, 27 May, 1893, shows the follow- 

 ing additional characters : staminate flowers yellowish green : sepals 5, 



