SAFFORD—CLASSIFICATION OF ANNONA. 57 
mal leaves 5 to 9 cm. long by 1.6 to 2 cm. broad with 12 to 18 lateral nerves on 
each side forming an acute angle with the midrib and curving gently upward, 
membranaceous, the parenchyma reticulate, punctulate, deep green and glabrous 
above with the midrib impressed, dull green and sparsely pubescent beneath, 
with the prominent midrib and lateral nerves ferrugineous-lirtellous; petioles 
grooved above, 3 to 4 mm. long, clothed like the new branchlets with sub- 
appressed ferrugineous hairs; peduncles solitary, extra-axillary, short and 
slender, nodding or recurved, about 4 mm. long, minutely appressed ferru- 
gineous hirtellous, with a small ovate bracteole below the middle and a second 
at the base, these like the calyx appressed ferrugineous hirtellous; flower 
buds broadly ovate-conoid, rounded at the apex, 9 to 10 mm. in diameter. and 
9 mm. high; calyx small, ferrugineous-hirtellous, with 3 broadly ovate lobes, 
at first appressed, at length recurved at the apex; outer petals very thick, 
valvate, triquetrous, hollowed at the base to receive the essential parts, finely 
ferrugineous-pubescent on the outside, 9 mm. long and 7.5 mm. broad; inner 
petals normally scalelike, not exceeding the stamens in 
length; not infrequently one of them abnormally en- 
larged, thrusting itself between two of the outer petals 
and ferrugineous-pubescent on the outside like them; 
torus convex, clothed with whitish hairs between the 
bases of the filaments; stamens numerous, 2 mm. long, 
in 3 or 4 series, with the fleshy incurved connective ter- 
minating in an obtuse apex less than the two pollen sacs 
in width, not expanded into a hoodlike covering above 
the pollen sacs; carpels distinct, about equal to the sta- ° ° 
mens in length, crowded into a conical gynecium, the MiG. Shower’ of ah parts 
ovary with appressed whitish or pale rufous hairs on rosei, a, Stamens; 3, 
each side and at the base, the median portion more or carpels. Scale 13. 
less glabrous and minutely granular as seen under the 
microscope in fresh specimens) ; styles tapering to a fleshy point, with a median 
groove on the ventral side; fruit not observed. (PLatTes 35-37. Ficure 66.) 
Type in the United States National Herbarium, no. 703452, collected at Azua, 
southern coast of Santo Domingo, March 20, 1913, by Dr. J. N. Rose (no. 4038). 
Growing in dry, rocky situations, associated with Cactaceae and other xerophi- 
lous plants. 
DISTRIBUTION: Known only from the type locality. 
According to Doctor Rose’s field notes, Annona rosei is a bush or small tree 
from 6 to 20 feet in height. It was found mostly on the banks of a stream and 
adjacent low hills, in association with Agaves, Opuntias, and Acacias, the exact 
type locality being about 3 miles above the town of Azua along the little stream 
which is the source of its water supply. Azua is located in a great cactus 
desert on the leeward or southern side of the island and is probably one of the 
driest parts of Santo Domingo, the annual rainfall of the region being about 8 
inches. Doctor Rose spent about ten days at Azua, collecting in all directions 
and looking out especially for Annonaceae, but the present species was seen only 
on this one occasion; not many individuals were observed, and these were in- 
cluded within the radius of a mile. Fortunately it was in bloom, and Doctor 
Rose collected fully developed flowers which were preserved in formalin. 
Though normally having three fleshy thick outer petals and three small scale- 
like inner ones, both the dry herbarium material and the flowers in formalin 
