40 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
on the circumference of the gynecium velvety or clothed with fine glandular 
hairs, the inner ones less hairy or papillose, all of them cemented into a solid 
mass and becoming detached from the ovaries after pollination; fruit said to be 
irregularly ovoid or spheroid and orange-colored when ripe; pulp edible but 
inferior in flavor to that of the chirimoya (4A. cherimola). (PLATE 21. Ficure 
17, a, c, d, p. 18.) 
Type in the Regnell Herbarium, Stockholm, collected at Villa Morra, Asuncion, 
Paraguay, December 17, 1893, by Prof. J. Daniel Anisits, of Budapest (no. 52). 
DISTRIBUTION: Paraguay, Asuncion and Pilcomayo River (Morong) ; also on 
sandy plains near Itacurubi (Hassler). 
SPECIMENS EXAMINED: 
Paracuay: Asuncion, Morong 149 (U. S. Nat. Herb., Herb. Phila. Acad. 
Sci.). San Bernardino, Endlich 4 (Berlin Herb.) ; Cordillero de Altos, 
Fiebrig 552 (Berlin Herb.) ; Estrella, near Rfo Ap4, on termite hills, 
Fiebrig 4324; near Concepcion, Hassler 7622; Gran Chaco, left shore 
Paraguay River, 7'. Rojas 2439. Lake Ypacaral, Hassler 3586. 
LocaL NAMES: Araticii fu, Araticu mi (Paraguay). 
This species is closely allied to Annona cornifolia, in which the flowers are 
either solitary or geminate and usually recurved or nodding. Its chief leaves, 
however, are glabrous or very nearly so, while in A. cornifolia they are nor- 
mally pubescent or even densely tomentose, especially on the lower surface. 
EXPLANATION OF PLATE 21.—Photograph of Morong 149 (U. S. Nat. Herb.), showing 
geminate peduncles at the right. a, Three ovaries detached from the gynecium of the 
upper flower of the pair; b, mass of styles with outer circle of velvety stigmas detached 
from gyneecium of solitary nodding flower shown in the upper left-hand corner, Branches 
at natural size; a, b, scale 6, 
Annona acutiflora Mart. 
Anona acutifiora Mart. Fl. Bras, 13*: 10. 1841. 
Section Atractanthus, A shrub or small tree 4 to 6 meters high with crowded 
slender subflexuose branches; bark dark gray, bearing numerous lenticels, that 
of the young branchlets clothed with appressed 
ferrugineous hairs; bud scales densely ferru- 
gineous-villous ; leaves oblong, elliptical, obovate- 
oblong, or lanceolate-oblong, normally acuminate 
or cuspidate at the apex, acute or acutish at the 
base (8 to 11 lateral nerves on each side), 
distichous, rather closely crowded, 5 to 13 cm. 
long, 2.5 to 5 em. broad, the younger ones thinly’ 
membranaceous and soft, the older ones mem- 
branaceous, deep green, pellucid-punctulate, 
glossy above and glabrous, clothed beneath 
when young with appressed ferrugineous hairs, 
especially along the midrib and lateral nerves, 
these becoming more or less glabrate at length; 
petioles 4 to 6 mm. long; broadly grooved above 
in continuation of the impressed midrib, ferru- 
gineous-hirtellous when young, at length gla- 
brescent; inflorescence extra-axillary, inclosed when young by two acute tri- 
angular concave ferrugineous-hirsute persistent bracts; peduncles in clusters 
of 2 or 3 or sometimes solitary by the abortion of the younger buds, usually 
decurved, issuing from the basal bracts and bearing one or two bracteoles, 
these together with the peduncles and the calyx clothed with a ferrugineous, 
Fic. 47.—Flower of Annona acuti- 
flora. From Riedel specimen as 
cited. Scale 2. 
