20 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
This species ranges nearly throughout Mexico and naturally so numerous specimens 
exhibit great variation. At first glance the form with nearly glabrous leaves de- 
scribed by Kunth as Ficus cotinifolia seems very different from the plant with densely 
hairy leaves to which Liebmann applied the name longipes. In the writer’s mind, 
however, there is no doubt that all the specimens listed are conspecific. The leaf 
blades show much variation in outline, but often the range of variation upon a single 
specimen is nearly as great as in the whole series of specimens examined. 
Ficus myxaefolia was described from cultivated specimens. The dimensions of the 
leaves (up to 17 cm.) are much greater than in our specimens, yet this size could easily 
be explained as the result of favorable cultural conditions. When Miquel trans- 
ferred the species to Urostigma he referred to it Schiede and Deppe’s no. 737, prob- 
ably from Veracruz, giving a complete description of the plant. His diagnosis 
agrees very well with the less pubescent specimens here listed. If Miquel was correct 
in his identification, as very probably he was, being an intensive student of this 
genus, there is little doubt that Ficus myxaefolia is properly placed in synonomy here. 
The specific name, derived from an old generic name applied to certain species of 
Cordia, would indicate a plant with leaves similar to those of Ficus cotinifolia. 
The description of Urostigma glaucum agrees in every detail with the present ma- 
terial. The type of this species was collected by Liebmann along the Rio de las 
Vueltas, Oaxaca. 
Many of the specimens cited have been distributed as Ficus tecolutensis, sometimes 
with a note to the effect that the receptacles are, however, sessile. That species, as 
shown by a specimen of the type collection in the Gray Herbarium, is a wholly 
different plant. 
Rose’s no. 11316 from Mitla, Oaxaca, is remarkable in having petioles up to 11.5 
cm. long, which thus equal or exceed the blades. Otherwise it does not appear to 
differ from typical cotinifolia, In most specimens the petioles are much shorter than 
the leaf blades. 
23. Ficus petiolaris H. B. K. Nov. Gen. & Sp. 2: 49. 1817. 
Urostigma petiolare Miquel, Lond. Journ. Bot. 6: 527. 1847. 
Ficus jaliscana 8. Wats. Proc. Amer. Acad. 26: 150. 1891. 
Small or large tree with stout, thick, grayish or yellowish branches, the branchlets 
glabrous; petioles slender, half as long as the blades or longer, often equaling them; 
stipules brown, glabrous or sparsely puberulent, large; leaf blades cordate-orbicular, 
6.5 to 15 cm. broad, broadly rounded at the apex and abruptly short-apiculate, the 
basal sinus deep and narrow, the rounded lobes sometimes overlapping, the upper 
surface of the blades glabrous, pale green or glaucous, the lower surface pale, glabrous 
except for tufts of long white hairs in the axils of the principal veins; peduncles 
geminate, 7 to 20 mm. long, glabrous; involucre bilobate, the lobes short, rounded, 
puberulent; receptacles globose or depressed-globose, 10 to 15 mm. in diameter, 
densely fulvous-villous when young, in age minutely puberulent or glabrate, some- 
times spotted, the ostiole prominent. 
Tyre Locauity: Western slope of the Sierra Madre near Mazatlan, Sinaloa, and 
Acahuizatla, Guerrero. Type collected by Bonpland. 
SPECIMENS EXAMINED. 
Sonora: Granados, alt. 1,110 meters, 1894, Hartman 217 (N, G, F). Alamos, 
1899, Goldman 286 (N,G). Sierrade Alamos, 1910, Rose, Standley & Russell 
12810 (N). Mina Grande, April, 1892, Hisen (C). 
Srvatoa: Near Colomas, 1897, Rose 1695 (N), 3192 (N). Mazatlan, 1910, Rose, 
Standley & Russell 13744 (N). Valley of Rio Fuerte, 1898, Goldman 243 
(N, G). Topolobampo, 1910, Rose, Standley & Russell 13284 (N). 
Jatisco: Bolafios, 1897, Rose 2908 (N). Barranca near Guadalajara, 1892, Prin- 
gle 4336 (N, F). Cliffs near Guadalajara, December, 1889, Pringle 2932 
(G, type of F. jaliscana). 
