292 ASHE: TREES AND SHRUBS OF WASHINGTON 
smaller flowers with narrow, often acute petals and a slightly 
larger hypanthium with very narrow sepals. 
Frequent in bogs near Beltsville, Maryland. 
AMELANCHIER SANGUINEA (Pursh) DC. 
On shaded rocks along the Potomac River, at Great Falls, 
Virginia, ten specimens noted.* 
Amelanchier sera sp. nov. 
A shrub 1.2-4 m. high with habit (single-stemmed and bushy 
topped) much like that of small specimens of A. canadensis. 
Leaves 3-6 cm. long, 2.5—4 cm. wide, ovate or elliptic, rounded or 
subcordate at the base, obtuse or rounded and abruptly apiculate 
at the apex (the upper leaves on the twigs differing in being obo- 
vate and cuneate at the entire base), rather distantly serrate with 
short apiculate teeth, prominent veins in six to eight pairs, surface 
thickly coated with a grayish tomentum and more or less bronze 
colored upon unfolding, becoming nearly or quite glabrous at 
maturity, thick and firm, dark blue-green and lucid above, pale 
and glaucescent beneath, turning dark crimson in autumn; peti- 
oles one fourth to one third as long as the blades, often reddish 
at the base. Flowers appearing in late April and early 
May, in six- to eleven-flowered nodding racemes, 4-6 cm. long; 
petals oblong-spatulate, acute, 8-11 cm. long, 2.5-3 mm. wide; 
hypanthium small, 6~7 mm. across, from tip to tip of sepals, 
shallow, glabrous within, tube becoming glabrous before the open- 
ing of the flowers; sepals sometimes remaining slightly pubescent 
within until fruit is half grown, reflexed after anthesis and remain- 
ing so on mature fruits; summit of ovary glabrous. Fruit in four- 
to eight-fruited racemes, globose, 4-6 mm. thick, dark reddish 
purple when ripe (latter half of June), the lower fruiting pedicels 
2—2.5 cm. long. 
On rocky banks along the Potomac River, Fairfax County, 
Virginia, and Montgomery County, Maryland. 
This new species blooms just after A. canadensis, when A. 
stolonifera and A. oblongifolia are entirely through blooming and 
A. sanguinea is still in bloom. It grows in association with all 
four of these species and also with the new variety to be described 
below. From A. canadensis (and also A. laevis) it is separated 
by its much smaller flowers, later blooming, more shallow hypan- 

* Not included in McAtee’s list of characteristic plants of Great Falls, op. cit. 107. 
