SAFFORD—ANNONA SERICEA AND ITS ALLIES. . 273 
8. Annona echinata Dunal. 
PRICKLY ANNONA OF FRENCH GUIANA. 
Anona echinata Dunal, Monogr. Anon. 68. pl. 4. 1817. 
Branches divaricate, clothed when young with ferrugineous hairs, at length glabrate, 
blackish, rugose, and bearing many lenticels; petioles 5 mm. long, deeply grooved 
above, at first minutely appressed-pubescent, at length glabrescent; blades membra- 
naceous or subcoriaceous, thicker than those of A. sericea, pellucid-punctate, those 
on the upper parts of the flowering branches ovate-oblong or ovate-lanceolate, some- 
what acute or obtusely acuminate at the apex, rounded or cuneate at the base, gla- 
brous above, the midrib impressed and bordered on each side with numerous very 
short raised veins at right angles to it, the secondary nerves (8 to 10 on each side) 
sharply defined, connected by reticulating veins; beneath clothed with fine short 
dull grayish ferrugineous pubescence or tomentulum and reticulated between the 
prominent midrib and secondary nerves; lowermost leaves on flowering branches 
smaller and relatively broader, sometimes obtuse or retuse at the apex as in many 
other species of the genus; peduncle solitary, 1-flowered, 11 mm. long (in the type 
specimen), extra-axillary, issuing from the base of a new branchlet and apparently 
terminal on account of the abortion of the portion of the branchlet beyond it (as in 
many other Annonaceae), ferrugineous-tomentose or hirtellous and bearing a small 
tomentose bracteole below the middle; flowers similar in size and shape to those of 
A. sericea, spheroid in bud, normally 3-petaled, but sometimes in the rainy season 
(according to Sagot) with 3 additional inner petals alternating with the outer and 
closing the seams between them; calyx 3-lobed, 5 mm. in diameter, the divisions 
broadly triangular and obtuse, clothed on the outside like the peduncle with ferru- 
gineous hairs; petals broadly ovate or suborbicular, obtuse, thick, coriaceous, con- 
cave, 11 mm. long and 10 mm. broad (in type flower), clothed on the outside with 
minute ferrugineous pubescence; stamens numerous 2 to 2.5 mm. long, with a short 
broad filament, linear pollen sacs, and a connective expanded into a swollen head, 
this minutely papillose or muriculate but devoid of hairs; carpels numerous, united 
in a conoid gyncecium, the ovaries clothed with appressed ferrugineous hairs; fruit 
ovoid, small, 24 mm. long by 17 mm. broad (fruit of type possibly immature), bearing 
numerous recurved protuberances corresponding to the individual carpels, the sur- 
face clothed with fine appressed ferrugineous pubescence; seeds oblong, 6 mm. long 
and 3 mm. broad; peduncle at length thickened and woody, sometimes apparently 
terminal from the abortion of the portion of the branch beyond it. (Piates 95, 96.) 
Type in the Prodromus Herbarium of De Candolle at Geneva (ex Herb. Lhéritier), 
collected about 1795 at “‘Cayenne”’ (French Guiana) by J. B. Patris. 
Disrripution: Guiana and probably Brazil. 
SPECIMENS EXAMINED: FrENcH Gu1ana—‘‘Cayenne,” Patris, type collection, 
leaf, stamens, and tip of carpel; Mana, Sagot 6, leaf and stamens, from Kew Herbarium. 
This species is undoubtedly closely related to A. sericea Dunal, but differs conspicu- 
ously from that species in the character of the indument of the leaves and the absence 
of hairs on the swollen terminal head of the connective of the stamens. Its ovoid, 
echinate fruits resemble miniature soursops (A. muricata L.). The recurved carpel 
tips are somewhat like those of A. cercocarpa described above, but differ from them in 
their less length and in their much finer, appressed pubescence, the carpels of A. 
cercocarpa being prolonged into tail-like appendages covered with relatively coarse, 
strigose hairs (fig.44). The present species is also sharply distinct from the preceding 
in the shape and texture of its leaves, as indicated by the accompanying illustrations. 
EXPLANATION OF PLATES 95, 96.—PI1. 95, photograph of type specimen in De Candolle Prodromus Her- 
barium, Natural size. Pl. 96, drawing from type material, that of fruit reproduced from original plate; 
a, petal; b, stamen; c, cross section of fruit; d, tip of mature carpel; ¢, immature carpel bearing style. 
Figs. a andc, natural size; b and e, scale 20; d, scale 8. 
85668°—voL 16, pr 10—13 2 
