BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 109 
First flowers June 18, 1910; at other stations not yet in flower 
June 24, 1910. 
RUBUS PROCUMBENS Muhl. 
Common and very variable; many specimens are uncharacter- 
istic and apparently involved with other species. In full flower 
June 15, 1908, June 19, 1910; ripe fruit August 6, 1906. 
*Rusus BAILEYANUS Britton. 
Frequent or common in dry thickets and pine groves. Flowers 
2.5 cm. to over 5 cm. wide, the petals commonly very broad, often 
orbicular and nearly 2 cm. wide, actual measurements of the largest 
seen being 2.6 cm. long by 1.8 cm. broad. Freshly in flower 
June 11, 1908. 
* Rusus ENSLENII Trat. 
Common in open sandy places, even in pure sand, and in dry 
pine groves. Flowers equally as broad as those of R. Baileyanus 
but with narrower, oblong petals; fruit subglobose, of medium 
size, with rather large drupelets, somewhat insipid and watery. 
First flowers June 4, 1909, June 7, 1908; ripe fruit August 7, 1906. 
Many examples match perfectly with specimens of R. Ensleni 
in the herbarium of the New York Botanical Garden from Virginia, 
Georgia, and Alabama. 
* RUBUS FLAGELLARIS Willd. Enum. Hort. Berol. 549. 1809. 
Prostrate, the long-trailing stems and branches soft and some- 
what fleshy towards the ends and rooting freely at the tips; stems 
terete or subterete, smooth, often purplish; prickles usually few and 
scattered, sometimes almost wanting, acicular, or even bristle- 
form on the new shoots, very short and decurved, often with 
thickened base on the upper stem and branches; primary leaves 
3-foliolate, on rather short, glabrous, or thinly pubescent petioles, 
2-5 cm. long, armed like the stem; leaflets usually dark green, 
often purplish, or even deep purple when young, of firm texture, 
thickish, often subviscid to the touch, glabrate or bearing scattered 
appressed hairs on the upper surface, glabrous beneath or minutely 
subappressed-pubescent along the veins; leaflets variable in size, 
commonly 4-6.5 cm. long and 3-5 cm. wide but often smaller, 
closely and frequently very irregularly denticulate or denticulate- 
serrate to more openly dentate, the teeth abruptly acuminate, 
usually with firm incurved points; the odd leaflets orbicular or 
obovate-orbicular to broadly elliptic, abruptly short-acuminate, 
