ROSACEAE. [Vou. II. 
14. Rubus setdsus Bigel.  Bristly 
Blackberry. (Fig. 1903.) 
Rubus setosus Bigel. F\. Bost. Ed. 2, 198. 1824. 
‘Rubus hispidus var. setosus T. & G. Fl. N. A. 1: 
456. 1840. 
Rubus hispidus var. suberecta Peck, Rep, N. Y. 
State Mus. 44: 31. 1891. Not &. suberectus 
Anders. 1815. 
Similar to the preceding species but stouter, 
stems ascending or decumbent, the older parts 
densely clothed with slender stiff slightly re- 
flexed bristles. Leaflets generally 5 in leaves of 
the sterile shoots, 3 in those of the flowering 
branches, obovate, mostly acute or short-acumi- 
nate, sometimes 4/ long, short-stalked or sessile; 
flowers 6’/-9’’ broad, racemose; fruit small, sour. 
In dry or marshy soil, Quebec and northern New 
York to eastern Pennsylvania. July-Aug. 
15. Rubus trivialis Michx. Low Bush- 
Blackberry. (Fig. 1904.) 
Rubus trivialis Michx. Fl. Bor. Am. 1: 296. 1803. 
Stem trailing or procumbent, several feet long, 
beset with stout hooked prickles, and sometimes 
bristly. Branches erect, 3/-9’ high, prickly and 
usually pubescent or setose; leaves petioled, 3- 
foliolate (rarely 5-foliolate), leaflets oval, or 
sometimes ovate lanceolate, coriaceous, ever- 
green, glabrous or very nearly so, acute or ob- 
tusish at the apex, narrowed or rounded at the 
base, sharply serrate; peduncles terminal, prickly, 
1-5-flowered; flowers often 1’ broad, white? 
petals much exceeding the reflexed sepals; fruit 
black, often 1’ long, well flavored. 
In dry sandy soil, Virginia to Florida, west to Mis- 
souri and Texas. Called also Southern Dewberry. 
March-May. . 
16. Rubus Baileyanus Britton. Bailey’s 
Blackberry. (Fig. 1905.) 
Rubus villosus var. humifusus T. & G. Fl. N. A. 1: 
455. 1840. Not 2. humifusus Weihe, 1825. 
Rubus invisus Britton, Bull. Torr. Club, 20: 279. 
1893. Not &. Canadensis var. invisus Bailey, 189t. 
R. Baileyanus Britton, Mem. Torr. Club, 5: 185. 1804. 
Rubus villosus Randii Bailey; Redf. & Rand, Fl. 
Mt. Desert, 94. 1894. 
Intermediate in habit between 2. vi//osus and 
R. Canadensis, stem trailing or ascending, spar- 
ingly prickly, 3°-6° long. Leaflets broadly 
ovate or oval, pubescent, at least on the lower 
acute or obtuse, the uppermost leaves almost in- 
variably unifoliolate; flowers few, rather large; 
fruit small, not as succulent as that of the related 
species. 
In dry woods and thickets, Maine to southern New 
York and Virginia. May-June. 
surface, mostly rounded or cordate at the base, t 
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