ROSACEAE. 



Vol. II. 



13. Rubus alleghaniensis Porter. Moun- 

 tain Blackberry. Fig. 2300. 



Rubus villosus var. montanus Porter, Bull. Torr. 



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. nigrobaceus 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"-i4" long, 3"-4" in 

 diameter; racemes sometimes very long; 

 drupelets oblong when dry, rarely yellowish. 



In dry soil, Nova Scotia to Ontario, New York, 

 Virginia and North Carolina. May-July. Fruit 

 ripe Aug.-Sept. High-bush blackberry. 



14. Rubus argutus Link. Tall Blackberry. 

 Thimble-berry. Cloud-berry. Fig. 2301. 



Rubus argutus Link, Enum. Hort. Berol. 2: 60. 1822. 



Shrubby, branched, perennial, pubescent; stems 

 erect or recurved, 3°-io° 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 wdiite, obovate, much exceeding 

 the sepals ; fruit black, pulpy, 6"-i2" 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 laciniatus Willd., found escaped from culti- 

 vation in southern New York, Pennsylvania and 

 Delaware, has laciniate or pinnatifid leaflets. It is a 

 native of Europe. 



15. Rubus Baileyanus Britton. Bailey's 

 Blackberry. Fig. 2302. 



Rubus villosus var. humifusus T. & G. Fl. N. A. i : 



455. 1840. Not R. humifusus Weihe, 1825. 

 R. Baileyanus Britton, Mem. Torr. Club 5 : 185. 1894. 



Stem trailing or ascending, sparingly prickly, 

 3°-6° long. Leaflets broadly ovate or oval, pubes- 

 cent, at least on the lower surface, mostly rounded 

 or cordate at the base, acute or obtuse, the upper- 

 most leaves almost invariably unifoliolate ; flow- 

 ers few, rather large ; fruit small, not as succulent 

 as that of the related species. 



In dry woods and thickets, Massachusetts to south- 

 ern New York and Virginia. May-June. 



Rubus Randii (Bailey) Rydb., referred to this 

 species in our first edition, appears to he a hybrid, 

 with R, canadensis L. as one of its parents. 



