42 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
or acuminate (the lower ones sometimes retuse), usually rounded at the base, 
conduplicate, membranaceous, punctate, 12 to 15 cm. long and 6 to 7.5 cm. broad, 
Fic. 49.—Inflorescence and leaves of Annona 
lutescens. From Goldman 1007, as cited. 
Scale 3. 
impress of stamen within, sericeous and keeled on the out- 
side; stamens numerous, short and broad, about 1.1 mm. long, 
Fic. 51.—Floral details of 
Annona lutescens and A. 
glabra. a, Carpels with 
solitary ovules at base, 
and b, stamens of A. 
lutescens ; c, stamen of 
A. glabra, All scale 13. 
at first densely fulvous-pubescent, at 
length glabrate except along the mid- 
rib and lateral nerves (10 to 14 on 
each side), these sparsely and per- 
sistently pubescent, as seen under the 
lens; petiole 10 to 14 mm. long, grooved 
above, the grooves filled with dense 
fulvous pubescence, at length glabres- 
cent; flowers resembling those of An- 
nona reticuaia L. and A. squamosa L., 
the young buds obpyriform, fulvous- 
pubescent ; inflorescence extra-axillary, 
often opposite a leaf, peduncles in 
clusters of 3 or 4, sometimes solitary, 
recurved or nodding, at first fulvous- 
pubescent, at length glabrate or 
sparsely appressed-pubescent, usually 
with an ovate acute pubescent brac- 
teole at or below the middle and a 
second one at the base; calyx 3-parted, 
calyx lobes ovate-acuminate; outer 
petals linear-oblong, 22 to 24 mm. long, 
concave at the base, keeled within or 
triquetrous above; 
inner petals minute, 
squamiform, scarcely 
exceeding the sta- 
mens in length, ovate, 
acute, usually with 
Fig. 50.—Inner 
petals of An- 
nona lutescens. 
a, Outside face; 
bo, inner face, 
with the brown connective expanded 
above the pale yellow pollen sacs 
into a broad truncate head; pollen with imprint of 
grains in tetrads, yellowish white or stamens. Scale 
cream-colored, arranged in 2 columns 10. 
in each pollen sac; gyneecium conoid, 
composed of numerous closely crowded appressed car- 
pels 1.1 to 1.8 mm. long; ovaries cothed with pale 
brown ascending hairs, with solitary basal ovule and 
terminal oblong or ovate fleshy glandular style similar 
to the styles of A. reticulata and A. squamosa, the 
lower portion of the ovaries more closely cemented 
together than in the typical forms of A. squamosa and 
A. cherimola, the styles constricted in the base and 
falling off in a mass soon after pollination; fruit 
broadly heart-shaped or conoid, 8 or 9 cm. in diameter, 
yellow when ripe, rounded at the apex, resembling 
that of A. reticulata, but with the surface quite 
smooth and the areoles only faintly indicated, as in A. glabra; seeds dark 
brown, smooth and glossy, resembling those of A. reticulata; pulp sweetish but 
