SAFFORD—CLASSIFICATION OF ANNONA. 9 
The appressed-pilose ovaries with the terminal style very much constricted at 
the base resemble those of the section Euannona (fig. 7, Z) and differ from 
those of the sections Phelloxylon and 
Chelonocarpus, in which the ovaries are 
fused together even in the early stages 
of the flower; and the section is further 
separated from Phelloxylon by the form 
of the inner petals, which are not valvate. 
Section 3. ULOCARPUS sect. nov. 
Type species, Annona purpurea Moc. 
& Sessé (pls. 12-14). 
In this section the flowers are very 
much like those of Euannona, with their 
thick, valvate outer petals and their 
concave, imbricate inner ones which 
form a domelike canopy over the essen- 
tial parts (fig. 9), but the ovaries are 
relatively shorter and the styles longer 
and more robust (fig. 10, 6) and the 
velvety, truncate extremities of the con- 
nectives of the stamens form a very 
close waterproof covering above the 
pollen sacs (pl. 2). The leaves in this 
section also are quite different in form 
and texture, and they sometimes reach 
a very large size, as in the type species 
of the section and the closely allied A. 
involucrata Baill. 
Fie. 8.— Annona salzmanni. Leaves and 
geminate flowers, an inner and an outer 
petal below. From type specimen in 
the De Candolle Herbarium. Scale 4. 
They are also deciduous and are quite devoid of the pits in 
the axils of the nerves, which characterize the section Euannona. The inflores- 
cence is peculiar, further, from the fact that it is 
Fig. 9.—Flower of Annona 
purpurea. One inner and 
one outer petal removed. 
Scale 3. 
soursops. 
enveloped when young with imbricated bracts (fig. 
11), which, in A. purpurea and 
A. involucrata, persist in a more 
or less perfect state like a sec- 
ond calyx beneath the true calyx. 
The leaves of the type species 
bear a resemblance to those of A. 
paludosa Aubl., the type of the 
next section in order, which may 
be regarded as a connecting link 
between the Pilaeflorae, or silky 
Annonas, and the Guanabani or 
The fruits, commonly called “ cabezas de negro” 
(negro heads), differ from those of Kuannona in having 
the protuberances of a pyramidal shape, rigid, and covered 
Fic. 10.—Carpels 
(a) of Annona 
montana and(b) 
of A. purpurea. 
Scale 5. 
with a feltlike indument, with a median groove on the side 
opposite the peduncle. 
In the opinion of the author Annona crassifiora Mart., 
together with the plants described and figured by Barbosa Rodrigues under 
