1912} Wiegand,— Amelanchier in eastern North America 145 
oval or orbicular, very rarely obovate-cuneate (average blades 2.5- 
5 cm. X 2-3.5 em.); apex rounded or sub-acute, mucronate; base 
rounded, rarely subcordate with a small narrow sinus, rarely cuneate; 
margin finely serrate with low obliquely-mucronate teeth, almost or 
quite entire on the lower third (5-8 teeth per cm.; 20-28, rarely 
30-32, teeth on each side if toothed to the base), and acute or rounded, 
open sinuses; green and glabrous above when young, densely white- 
tomentose beneath, soon glabrous throughout or the petioles and 
midribs often remaining slightly hairy; about half grown at flowering 
time and then just unfolding, at maturity usually pale green and 
glaucous, sometimes deep green; primary veins, in average leaves, 
7-11 (mostly 8-9) pairs, irregularly and distantly arranged, usually 
curved upward beyond the middle and becoming very irregular and 
indistinct before reaching the margin; mature petioles slender, 10- 
18 mm. long: racemes short, dense, erect, 1.5-4 cm. long; pedicels 
and axis silky tomentose or almost glabrous, the lower pedicels 7- 
15 mm. long, in fruit 12-22 mm. long: flowers small: petals obovate- 
oblong, broad for the length, 7-9 mm. long: hypanthium open, 
saucer-shaped, about 3-4 mm. in diameter, tomentose at the base or 
nearly glabrous, constricted below on the young fruit and then very 
prominent: sepals triangular-lanceolate, 2.5-3 mm. long, revolute 
from the middle when the petals fall, inner face tomentose: summit 
of the ovary densely woolly: fruit purplish black, glaucous, sweet, 
juicy and of good flavor. Fias. 4 A-G. 
Flowers appearing a few days later than those of A. oblongifolia 
and A. laevis; fruit maturing in July. On dry rocks, gravel, or rarely 
in sand, in non-calcareous districts on the coastal plain; in New- 
foundland, and from Maine to Virginia. It accompanies the coastal 
plain flora up the rivers, and extends to the non-calcareous summits of 
mountains in Vermont and western Massachusetts, as well as to the 
sandy region about Albany, New York, and Lake George, and appar- 
ently also to the shores of Lake Huron and Lake Erie. Type 
specimen in Gray Herb.— Sandy R. R. bank, Wellesley, Mass., 
May-June, 1911, Wiegand. 
This species has the same habit as A. humilis, and takes the place 
of that plant on the coastal plain. In floral structure there is very 
little difference between the two, but the foliage of the present species 
is much more closely related to that of A. oblongifolia, from which 
it differs in the shorter outline of the leaf, fewer veins, and slightly 
coarser teeth. It is similar to A. sanguinea, A. humilis, A. florida, 
and A. Bartramiana in the conspicuous constricted hypanthium on 
the half grown fruit. The remaining four species are without this 
character. 
The following typical specimens have been examined. New- 
FOUNDLAND: — Grand Falls, rocks and talus, gorge of the Exploits 
