32 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
fallen, and new leaves, which were just appearing with the flowers. The 
species is known in Venezuela by the common name “manirote.” The fol- 
lowing is an extract from Professor Pittier’s field notes, dated May 24-25, 
1913: “Annona manirote. Tree small, 3 meters high with depressed crown, nearly 
leafless at time of blooming, bearing only a few new leaves; flowers very large, 
yellowish green, having a strong, unpleasant, cestrum-like odor.” 
Alcoboliec as well as dry herbarium material was brought home by Professor 
Pittier, and a photograph was secured of the fresh leaves and a mature flower 
with elongated petals. A careful study of these establishes the identity of 
Annona manirote H. B. K. with A. purpurea Moe. & Sessé, beyond a doubt. 
EXPLANATION OF PLatTes 12-14,—Pl. 12, photograph, by Collins, of specimen closely 
resembling Mociiio and Sessé’s type as shown in plate 2 of Dunal’s monograph, with 
branches bearing prominent leaf scars and with young leaves and immature, solitary, 
extra-axillary flowers from the base of which the involucres are lacking. One flower with 
an outer and an inner petal removed shows the essential parts as crudely figured on 
Dunal’s plate. Pl. 13, field photograph, by Pittier, of specimen growing in Venezuela, 
showing old branch with flower subtended by involucre, and new branch, bearing leaves. 
Pl. 14, fruit collected at Ancon, Isthmus of Panama, by Pittier (no, 3955) ; photograph by 
Crandall. Natural size. 
Annona involucrata Baill. 
Anona involucrata Baill. Adansonia 8: 265. 1868. 
Anona prestoei Hemsl. in Hook. Icon. Pl. LV. 6: 2519, 2520. 1897. 
Anona muricata Wercklé, Tropenpfl. 428. 1903, not L. Sp. Pl. 536. 1753. 
Section Ulocarpus. A tree with the young branches yellowish or ferrugine- 
ous-tomentose, soon glabrescent, becoming light brown and covered thickly with 
lenticels; leaves short-petioled, large, broadly elliptical to obovate-oblong or 
obovate-lanceolate, shortly and often abruptly acuminate above the apex, usu- 
ally obtuse or retuse, but sometimes acute, rounded or subcuneate at the base, 
28 to 30 cm. long, 15 to 17.5 em. broad, at first membranaceous, at length sub- 
coriaceous, the midrib and primary nerves (22 to 28 on each side) impressed 
above, prominent beneath, ferrugineous-tomentose above at first, but at length 
glabrate, persistently ferrugineous-tomentose beneath; petiole 5 to 10 mm. 
long, thick and grooved above, ferrugineous-tomentose at first, at length 
glabrescent; flowers solitary, subsessile, extra-axillary, resembling those of 
A. purpurea, the young buds enveloped in an involucre of 2 imbricating bracts 
resembling bud scales, more or less persistent and suggesting a second or outer 
calyx; involucre, calyx, and outer petals densely and shortly ferrugineous- 
tomentose; calyx lobes broadly ovate, 2.5 to 3 cm. long, the 3 outer petals 
valvate, very thick, ovate-lanceolate, usually acute or acuminate but some- 
times obtuse at the apex, cordate at the base, 3.5 to 6.2 cm. long by 38 to 3.5 
cm. broad; 3 inner petals imbricate or overlapping, thinner than the outer 
and suborbicular or broadly ovate and rounded at the apex; receptacle hemi- 
spherical, clothed with minute bristle-like straight hairs; stamens 6 mm. long, 
very numerous, similar to those of A. purpurea, the thickened truncate crowded 
connectives clothed with brown velvety puberulence composed of short straight 
hairs; carpels numerous, 6.5 mm. long, the ovaries sericeous-hirtellous and 
scored with a median groove on the inner or ventral side; style prism-shaped, 
terminating in a swollen glandular velvety stigma; fruit spheroid, 10 to 12.5 
cm. in diameter, covered with rigid pyramidal protuberances, more or less 4- 
cornered, with a median groove or fissure on the side opposite the peduncle, 
very much as in A. purpurea, but with the apex not produced into a hook; 
seeds resembling those of A. purpurea, obovoid, compressed, marginate, the 
chestnut-brown testa roughened on its inner surface to conform with the 
