82 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
nervation impressed, above, prominent beneath; primary veins 14 to 25 on each side 
of the main nerve. 
Flowers pedicellate or subsessile, in numerous glomerules of 2 to 6, inserted in the 
defoliate axils of the penultimate growth. Pedicels 1 to 3 mm. long, hairy-tomentose. 
Sepals about 9 (8 to 10), imbricate, increasing gradually in size from the exterior, 
basal one to the innermost, 2.5 to 6 mm. long, 3.5 to 6.5 mm. broad, but the exterior 
much broader than long, the interior almost round, all more or less contracted at the 
base, emarginate or bilobate at the tip, appressed-hairy outside, smooth inside, the 
larger ones with a smooth, scarious margin. Corolla 9 to 
10 mm. long, sallow white, 5-lobate; tube glabrous; lobes 
more or less imbricate, slightly longer than the tube 
(about 5.5 mm. long), ovate, rounded and obscurely 
emarginate or dented at tip,.silky-hairy on the back but 
with a glabrous marginal zone, ciliate. Staminodes 3 to 
4 mm. long, rather narrow, short-pubescent. Stamens 5, 
glabrous, inserted slightly lower than the staminodes; 
filaments attenuate, 4.5 to 5 mm. long, subulate and 
incurved at tip; anthers elliptic-ovate, inserted a little 
Fia, 83.—Floral details of Calo. below the middle, at first erect and then reversed; con- 
carpum mammosum. a, Outer nective slightly exceeding the tip of the anther. Pistil 
sepal; 8, staminode; ¢, sta- clavate, about 9 mm. long; ovary stiff-hairy, the cells 
mens; d, pistil. All scale 3. : ‘ 
normally 5, but more or less obliterated; style conical- 
elongate, smooth or obscurely 5-sulcate, slightly shorter than the corolla, obtuse at tip. 
Fruit a large, monospermous, almost sessile berry, varying from globose to almost 
fusiform, rounded at base, more or less acute at the apex, 8 to 20 cm. long, 6 to 12 cm. 
in diameter; skin rather thin (1 to 2 mm.), cinnamon brown, rugose-paleate; meso- 
carp thick, fleshy, reddish or pinkish. Seed large (about 8 cm. long), fusiform- 
depressed, shiny, of a pale or yellow brown color except the umbilical area, this white, 
rugose, narrowly elliptic-acuminate in 
form, extending from one end to the 
other of the ventral side. 
CoMMON NAMES: West Indies, sapote, 
mamee-sapote, marmalade fruit (Eng- 
lish). Martinique, Guadeloupe, zapotte, 
grosse zapotte, zapotte & créme (French). 
Cuba, mamey, mamey zapote (Span- 
ish). Mexico, Central America, Co- 
lombia, Ecuador, zapote (Spanish). 
Mexico, teapott (Nahuatl); tsapas sabant Fia. 84.—Spread corolla of Calocarpum mammosum 
(Zoque). Yucatan, zapote mamey with stamens and staminodes, Scale 3. 
(Spanish); haaz, chacal haaz (Maya). 
Venezuela, Colombia, Ecuador, mamey colorado (Spanish). Guatemala, sal-tul 
(Kekchf); tul-ul (Pokomchf); chul (Mame); chul-ul (Jacalteca). Costa Rica, bko 
(Cabécara); kurék (Bribrf); kém-kra (Brunka); jit (Térraba). Panama, oa-bo 
(Guaymi). 
The shape of the leaves and fruits, the degree of pubescence of the former and of the 
flower, the number of the segments of the calyx, etc., are characters which, though 
subject to variation, have been taken as ground for creating several varieties. The 
constancy of these it is difficult to prove on account of the scarcity of adequate speci- 
mens in most herbaria. 
The specimens which I have investigated do not quite agree with the description 
of Pierre’s genus Calocarpum in Urban.!. Thus, among 15 flowers from 4 distinct 
1 Symb. Antill. 5: 97. 1904. 
