58 Rhodora [Marcu 
R. humilis Marsh. Dry soil, apparently common. 
R. nitida Willd. Swamps, frequent. 
R. RuBIGINosa L. Dry fields and roadsides, well distributed but 
seldom abundant. 
R. RUBIGINOsSA L., var. MICRANTHA (Sm.) Lindl. Occasional. 
R. rugosa Thunb. Thoroughly escaped at Newburyport, Rock- 
port, Revere and Cambridge. Earliest report 1905. Native of 
North China, Korea and Japan. 
R. virginiana Mill. Moist soil along the seashore and inland, 
apparently common. Many specimens identified as this species and 
as R. humilis seem to be indistinguishable from each other, and can 
not be separated readily. 
RUBUS. 
R. allegheniensis Porter. Dry thickets, common. 
R. Andrewsianus Blanchard. Cohasset and the shore towns 
south, perhaps inland. A late fruiting blackberry with rigid thorns 
and impressed veins in leaves. 
R. frondosus Bigel. Dry thickets, apparently not common. Orig- 
inally described by Jacob Bigelow in Florula Bostoniensis, 2d ed., 199- 
200, 1824. 
R. hispidus L. Wet woods and swamps, common throughout. 
R. idaeus L. var. aculeatissimus [C. A. Mey.] Regel & Tiling. 
Dry open places, common. 
X? R. neglectus Peck. Andover (A. S. Pease, June 14, 1903); 
Rockport (E. B. Bartram, Sept. 13, 1908); thicket, Lynnfield (M. L. 
Fernald, June 16, 1907); roadside, Concord (W. Deane, June 5, 1892). 
` R. occidentalis L. Thickets and fence-rows, frequent throughout. 
R. odoratus L. Rich woods, occasional in Essex and Middlesex 
Counties; sometimes spontaneous from cultivation, as at Cambridge, 
Sharon and Scituate. 
R. pergratus Blanchard. Occasional from Norwood north. 
R. pubescens Raf. (R. triflorus Richards. See’ RHoDoRA xi. 
236-7, 1909). Swamps and wet woods, frequent. 
R. pubescens Raf., var. pilosifolius'A. F. Hill. See RHODORA 
xvi. 151-2, 1914. Purgatory swamp, Norwood (C. E. F. axon, May —, 
1878). Specimen in Gray Herb. 
R. recurvans Blanchard. Occasional. 
R. setosus Bigel. Wet places, occasionally on dry upland, common. 
R. TRIPaYLLUS Thunb. Vacant lot, Back Bay, Boston (W. P. 
