194 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
_ The leaves are larger than in any other Mexican species. Maba latifolia 
Standl. is closely related but is distinguished by its small, coriaceous, rugose 
leaves. 
Diospyros oaxacana Standl., sp. nov. 
Branches grayish, the branchlets slender, densely brownish-pilose, the 
pubescence persistent; petioles stout, 2 to 3 mm. long, densely pilose; leaf 
blades oblong, obovate-oblong, or elliptic-oblong, 4 to 7.5 em. long, 2.8 to 4 em. 
wide, rounded or obtuse at.the base, rounded at the apex, chartaceous, green 
above, velutinous-pilose with short hairs or in age glabrate, paler beneath, 
densely short-pilose, the margin subrevolute; pistillate flowers solitary, the 
fruiting peduncles about 1 cm. long; pistillate calyx 5-parted to the base, short- 
pilose, the lobes linear-oblong, 1 to 1.5 cm. long, widest toward the apex, obtuse 
or rounded; immature fruit subglobose, 1.5 cm. in diameter, glabrous. 
Type in the U. 8. National Herbarium, no. 381771, collected at Cuicatl&n, 
Oaxaca, Mexico, altitude 600 meters, September 16, 1899, by V. Gonzilez 
(no. 982). 
Because of the glabrous fruit it is probable that this species belongs to 
the section Danzleria. Two Mexican species, D. palmeri Bastw. and D. 
blepharophylla Standl. (D. ciliata, A. DC.), have glabrous fruit (and ovary), 
but they differ from the present plant in having glabrous leaves. 
THE PANAMANIAN SPECIES OF LEIPHAIMOS. 
The species of this genus form one of the most interesting groups 
of tropical American plants. They are parasites or saprophytes, 
without chlorophyll, resembling in general appearance the Oro- 
banchaceae or even some of the saprophytic Orchidaceae and Bur- 
manniaceae. They have a comparatively simple structure, but vary 
widely in the form of the flowers, the shape of the corolla and calyx 
and the structure of the stamens affording excellent characters for 
specific segregation. The flowers are usually small, the largest, 
perhaps, being those of one of the Panamanian species, Z. pulcher- 
ramus, Whose corolla has a length of nearly 3.5 cm. and a breadth 
of 2 to 2.5 cm. The corolla is commonly bright-colored, of various 
shades of blue, yellow, or purplish red, but is often white or cream- 
colored. 
Until recently the species of Zetphaimos have been included in 
the genus Voyria. The treatment adopted here is that followed by 
Gilg in his account of the Gentianaceae in Engler and Prantl’s 
Natiirlichen Pflanzenfamilien.t Voyria, as limited by Gilg, is char- 
acterized by the dehiscence of the capsule, which is apical rather 
than lateral as in Letphaimos. In the former the pollen grains are 
elongate and curved, while in Leiphaimos they are ovoid. Gilg 
remarks that the two genera are far removed from each other in 
many points. To Voyria Gilg refers 3 species, all from the Guianas. 
These form a homogeneous group, closely resembling one another in 
habit. 
* 4: 50-108, 1895. 
