46 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
testa, resembling the nuts of Pinus cembra but much larger, without a pro- 
nounced basal caruncle. (PLATE 25. FieurEs 55, 56.) 
Type in the Gray Herbarium, collected at Rio Blanco, near Guadalajara, 
State of Jalisco, Mexico, June, 1886, by Dr. Edward Palmer (no. 55). 
DISTRIBUTION: State of Jalisco, Mexico. 
SPECIMENS EXAMINED: 
Mexico: State of Jalisco, Rio Blanco, Palmer 55, type (with smooth fruit) 
in Gray Herb., duplicate (with umbonate fruit) in U. 8. Nat. Herb., 
no. 2572); bluffs of the Rio Grande de Santiago, Pringle 2480; bluffs 
of the Barranca de Guadalajara, “a shrub 5 to 10 feet high,” Pringle 
9681 (with mature seeds) ; on the road between Bolafios and Guadala- 
jara, Rose 8058; near Tequila, Rose € Hough 4741. 
LocaL NAMES: Chirimoya de la barranca (Guadalajara, Jalisco) ; Chirimoya 
cimarrona (Tequila, Jalisco). 
Annona longifiora is very closely 
allied to A. cherimola Mill, but is 
easily distinguished from that species 
by its longer flowers with shorter pe- 
duncles and loose floccose hairs about 
the base of the corolla (fig. 56), by its 
leaves, which are at length glabrate 
instead of persistently pubescent be- 
tween the lateral nerves, and by its 
peculiar seeds, which resemble large 
pine nuts rather than the seeds of an 
Annona. It was originally described 
as a shrub 8 feet high; but specimens 
collected from the type locality by Mr. 
Cc. G. Pringle grew to the height of 
10 feet. About the base of the young 
branchlets, where they issue from the 
bud, is a collar of soft plushlike pu- 
bescence. As in many other species of 
the Annonaceae, the lowermost leaves 
of the flowering branchlets are smaller 
than the succeeding ones, in this spe- 
cies often suborbicular; the peduncles 
are extra-axillary, usually issuing from 
near the base of a branchlet and often 
opposite a small suborbicular leaf. The 
Bd. 6A long L P stamens and carpels are considerably 
an a teuit. eeale 3" rom type saterial in larger than those of A. cherimola; the 
U. 8. National Museum, outer petals are strap-shaped rather 
than triquetrous, as in the latter spe- 
cies, though they usually have a raised median line or keel on the inner surface. 
The minute inner petals scarcely exceed the stamens in length and might easily 
escape observation. 
In the type collection the fruits were immature. They were of two distinct 
forms analogous to the umbonate and smooth forms of Annona cherimola and 
of A. diversifolia. That in the Gray Herbarium is globose-ovate and “ covered 
with flat reticulations,” as described by Doctor Watson. In the National Herba- 
rium, however, the fruit of the type collection is conoid and bears numerous 
