454 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
at the base, finely and acutely serrulate or serrate, especially 
above, often entire towards the base, in vernation densely rufescent 
or white-tomentulose, especially on the lower surface, early be- 
coming glabrous beneath but long retaining scattered hairs on 
the upper face; petioles mostly 1-1.5 cm. long, soon glabrous; 
leaves of the shoots and young branches becoming 5 cm. or more 
long and broad, many cuneate-obovate and coarsely dentate-ser- 
rate, the primary veins with rather broad interspaces; racemes 
numerous, short, erect, terminating short leafy branchlets 2-5 
cm. long, which are erectly disposed along short or elongated erect 
or ascending branches, the axis and pedicels early glabrous; flowers 
6-14, crowded in small spikelike racemes; pedicels firm, somewhat 
clavate, mostly I-1.5 cm. long; calyx lobes rather narrow, lanceo- 
late, acute or attenuate, early reflexed; petals very small, narrowly 
linear or spatulate, frequently involute, 3-4 mm. long, 1 mm. wide 
distally; fruit small, globose, reddish purple, slightly glaucous, 
the surface of the ovary glabrous. 
Common on Nantucket in low grounds about the borders of 
swamps, as well as on the dry moorland and in pine barrens. 
Passing out of bloom towards the end of May, belated flowers 
sometimes remaining into the second week of June. Young fruit 
also at the end of May, becoming mature a month later. 
Type near Reed Pond, May 30, 19009, in flower and young fruit; 
young fruit and leaves of young branch June 10, 1908, in the 
herbarium of the N. Y. Botanical Garden. 
Almost the first one of the not readily determinable plants of 
Nantucket which drew my attention on my earlier visits to the 
island is the Juneberry here described. This shrub has since 
been referred by Dr. B. L. Robinson, on the basis of specimens 
collected on Nantucket by Judge J. R. Churchill, in 1904, to his 
new var. micropetala of Amelanchier oblongifolia, the type of which 
was from “‘ledges towards the summit of Blue Hill, Milton, Mass.” 
(Rhodora 10:33. 12Mr1908.) I have not been able to convince 
myself that the low and small-flowered Juneberry which finds its 
home on ledges and exposed rocky places is the same as the seem- 
ingly very local and coastwise Nantucket shrub. The rock-loving 
species is the plant described by Dr. N. L. Britton under the 
name Amelanchier spicata (Lam.) Dec. It is common along the 
crest of the Palisades of the Hudson River, growing on the most 
exposed ledges, and is found also rooted in the crevices of rocks 
