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BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 113 
closely short-pubescent or velvety beneath, denticulate to irregu- 
larly dentate-serrate with acuminate or attenuate teeth, ovate to 
ovate-oblong or oblong-lanceolate, acuminate, the odd one often 
cordate, its petiolule 2-4 cm. long, the lateral pair short-stalked; 
flowering branchlets rather short, usually confined to the upper 
part of the stem, the lower branchlets stouter and leafy; inflor- 
escence racemose or somewhat corymbose, a few of the lower 
flowers subtended by reduced trifoliolate or unifoliate leaves; axis 
and pedicels short-pubescent with spreading hairs to tomentulose, 
bearing few or numerous stalked glands or sometimes obscure 
sessile glands only; pedicels slender, ascending or spreading, often 
weak and flexuous when young, I~-4 cm. long, unarmed or sparsely 
setulose; calyx lobes thinly pubescent to somewhat villous, with 
or without gland-tipped hairs, apiculate to caudate; flowers small 
or medium-sized, petals oblong to obovate, I-1.5 cm. long; fruit 
apparently rather small, ovoid-subglobose, the drupelets medium- 
sized. 
The foregoing description is derived primarily from specimens 
collected on Long Island, where the plant is frequent in open wood- 
land. 
It was met with only at two stations on Nantucket; thicket 
near Shawaukemmo Spring, first flowers June 11, 1908, and 
pine scrub near the fair grounds, in full flower June 17, 1908, 
both examples being only obscurely glandular and otherwise 
atypical. 
The plant is ordinarily well characterized among allied forms 
by lax habit, sparse armature, long-petioled thin leaves, and short, 
subcorymbose, mostly glandular raceme. Occasional specimens 
are ambiguous and very puzzling, appearing to lie midway between 
typical examples and forms of R. allegheniensis Xargutus. 
* RUBUS ALLEGHENIENSIS X PROCUMBENS. 
Shoots ascending, early recurved or declined, becoming very 
slender and flexuous and trailing over bushes or on the ground, 
simple or sparingly branched ; stems more or less angled, sometimes 
furrowed below, purplish brown to bright purple, either sparingly 
armed or provided with numerous prickles mixed with scattered 
gland-tipped bristles and glandular hairs; prickles acicular above 
the broadened base or often bristleform, mostly 3-5 mm. long, 
straight, erect or slightly retrorse, or even decurved, especially 
on the petioles and petiolules; primary leaves 4-10 cm. long, 
5-foliolate, even the lowest rarely 3-foliolate, often numerous; 
