1912] Wiegand,— Amelanchier in eastern North America 139 
glabrous outside or with a zone of hair at the base, constricted below 
on the young fruit and then very prominent: sepals ovate-lanceolate 
or lanceolate, very acute, 4 mm. long, revolute from the middle when 
the petals fall, glabrous without, hairy within: summit of the ovary 
densely woolly: fruit rather large, almost black, glaucous, very sweet, 
juicy and agreeable. Figs. 1 A-G. 
A very beautiful species when well developed; the flowers appearing 
10-14 days later than those of A. canadensis and A. laevis; the fruit 
maturing in August or September. On dry rocky or gravelly soil in 
calcareous districts; eastern, northern and central Maine, Vermont, 
western Massachusetts, Quebec, Ontario, Michigan, and possibly 
farther westward, south through New York along the mountains 
to northern Alabama. 
Forma grandiflora, f. nov., floribus pergrandibus pulchrisque, 
petalis 17-20 mm. longis, 5-6 mm. latis. 
Flowers very large and showy; petals 17-20 mm. X 5-6 mm. 
Overhanging the ravines of central New York. "Type in Gray Herb.: 
Ithaca, N. Y. Wiegand. 
Var. gaspensis, var. nov., glabra foliis novellis gemmisque exceptis; 
venis foliorum ad marginem valde reticulatis. 
Glabrous, except the youngest leaves and flower buds: the veins 
of the leaves prominently anastomosing before reaching the teeth. 
Rocky banks and river gravel on the Gaspé Peninsula, Quebec. 
Type in Gray Herb.: alluvial woods, mouth of Bonaventure River, 
1902. Fernald & Williams. 
Britton, in describing the habit of this species in the Illustrated 
Flora says; “A tall shrub or small tree, sometimes 25° high”; and 
in the N. A. Trees he says: “Its maximum height is 6 meters, with a 
trunk diameter of about 3 dm." Blanchard (Torreya, vii. p. 100) 
in writing of what was probably this species, says: “It has large 
and nearly round leaves, generally coarsely toothed,— and is often 
quite large or a small tree." Michaux gives the habit “arborescens,” 
which, from the context, means in size between a tree and a shrub. 
The writer is acquainted with this species in central New York, where 
it festoons the crests and the ledges of cliffs bordering lakes and 
ravines, and is usually flanked or backed by other bushes and trees. 
It always occurs, therefore, in slightly more humid situations than 
those frequented by A. humilis. There, in that locality, it is always a 
delicate, wand-like, arching shrub, never more than about 3 m. high 
and with a stem never over 3 em. in diameter. Sometimes these stems 
are solitary, sometimes in groups of several, but never forming broad 
patches as in A. humilis, nor forming dense clumps as in A. oblongifolia. 
Nothing even remotely approaching a tree-like habit has ever been 
