454 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
characters of the leaf with the newly collected plant. In V. guatemalensis 
there are, it is true, 15 to 30 primary veins, but these are not distinctly confluent 
along the margin, and, besides, the blades are cuneate and not truncate- 
emarginate at the base, and obtuse and not very acute at the apex; they are 
also said to be glabrate and pellucid-punctate, with petioles about half shorter. 
From V. panamensis and V. warburgii the newly discovered tree differs in the 
greater number of veins, so that a further comparison is hardly necessary. 
There may be a great variation in the shape of the leaves in V. guatemalensis, 
to which the specimens here described may then be added, but this can be 
decided only after the flowers of both forms are known. 
Compsoneura sprucei (A. DC.) Warb. Nov, Act. Acad. Caes. Leop. Carol. 68: 
143. 1897. 
Myristica sprucet A. DC. in DC. Prodr. 14: 199. 1856. 
| Myristica mexicana Hes]. Biol. Centr. Amer. Bot. 3: 67. pl. 73. 1882. 
Warburg has commented on the remarkable identity of specimens growing as 
far apart as Mexico and the Amazon Valley. Although I also eonsider it prob- 
able that the examination of adequate material from both areas may result in the 
recognition of a distinct Middle American type, for which the name Myristica 
mevricana Hemsl. is available, attention may be called to the fact that other 
plants, such as Dialium divaricatum, Tecoma pentaphylla, and Calophyllum 
calaba, have quite as wide a distribution. These are better known on account 
of having some economic application, while the former, not being of any specific 
use to man, has been more or less ignored. In fact, it may be found to be 
widely dispersed between the two extreme points from which it has been 
reported. 
The fruit and seed have been lacking in all described specimens. <A descrip- 
tion of these follows: 
Pedicels 8 to 15 mm. long, glabrous, bearing at about the middle the persistent 
perigonium ; fruit ovoid, 3 cm. long, 2.3 em. in diameter, the pericarp dehiscent, 
bivalvate, thin, glabrous; seed ovoid, 2.6 em. long, 1.7 cm. in diameter, com- 
pletely surrounded by a membrane-like yellow aril; exosperm finely ruminate; 
embryo very small, ruminate. 
The fruiting specimens from which the description is drawn were collected 
by Whitford and Stadtmiller on the trail from Los Amates, Guatemala, to La 
Florida, Honduras, in May, 1919. I find also in the National Herbarium the 
following specimens: 
Mexico: Atasta, Tabasco, in shaded places, flowers, June 30, 1889, Rovirosa 
517. 
Honpuras: San Pedro Sula, Department of Santa Barbara, flowers, Sep- 
tember, 1888, Thieme (J. D. Smith, no. 5256). 
Dialyanthera latialata Pittier, sp. nov. 
A tree, 8 to 15 meters high, the trunk straight, the branchlets glabrate. 
Leaves large, alternate, membranous, entirely glabrous, congested at the ends 
of the branchlets, the petioles 1 to 2.5 cm. long, broadly alate through the 
decurrence of the blade, this broadly obovate, long-attenuate toward the base, 
short-acuminate at the apex, 20 to 30 em. long, 9 to 10 em, broad, dark green 
above, brownish-glaucescent beneath, the costa and primary veins impressed 
above, the former very prominent and stout, the latter 20 to 25, slender, slightly 
arcuate, anastomosing along the margin of the blade. Staminate inflorescences 
axillary or on defoliate nodes, up to 20 em. long, the main rachis usually 
ternate, glabrous, the flowers ebracteate, brownish yellow, in opposite sessile 
clusters ; pedicels slender, 7 to 11.5 mm. long; perianth about 3 mm. long, 3-fid, 
