This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Club 17: 15. 1890. Rubus montanus Porter, Bull. Torr. Club 21:
120. 1894. Not Ort. 1852. Rubus alleghaniensis Porter, Bull. Torr. Club 23:
153. 1896. R. nigrobaccus Bailey, Sk. Ev. Nat. Fr. 379, /. 59, 60. 1898.
Stems reddish or purple, very prickly, erect, arching or ascending, 2°-8° high. Leaflets ovate to ovate-lanceolate, acute or acuminate, pubescent, at least beneath, the inflorescence more or less glandular-hispid; flowers several in rather loose racemes; fruit oblong, oblong-conic or thimble-shaped, 8"-14" long, 3"-4" in diameter; racemes sometimes very long; drupelets oblong when dry, rarely yellowish.
Shrubby, branched, perennial, pubescent; stems erect or recurved, 3°-10° long, armed with stout prickles. Stipules linear or lanceolate; leaves 3-5-foliolate; leaflets ovate or ovate-oblong, acute or acuminate, coarsely and unequally serrate, densely pubescent beneath, the terminal one stalked; inflorescence racemose, villous, often glandular and prickly; bracts small; flowers 9"-12" broad; petals white, obovate, much exceeding the sepals; fruit black, pulpy, 6"-12" long.
In dry soil, mostly at low altitudes, Massachusetts to Virginia. Finger-berry. Sow-tit. May-June. Fruit ripe July-Aug. Included in our first edition in the description of Rubus villosus Ait., which name has been erroneously applied by most authors.
Rubus villosus var. humifusus T. & G. Fl. N. A. 1:
Stem trailing or ascending, sparingly prickly, 3°-6° long. Leaflets broadly ovate or oval, pubescent, at least on the lower surface, mostly rounded or cordate at the base, acute or obtuse, the uppermost leaves almost invariably unifoliolate; flowers few, rather large; fruit small, not as succulent as that of the related species.
In dry woods and thickets, Massachusetts to southern New York and Virginia. May-June.
Rubus Rßndii (Bailey) Rydb., referred to this species in our first edition, appears to be a hybrid, with R. canadensis L. as one of its parents.