202 ROSACEAE 



g. Rubus villosus Ait. High Bush 

 Blackberry. (Fig. 1898.) 



Rubus frulicosus Marsh. Arb. Am. 137. 1785. Not 

 L. 1753- 



Rubus villosus Ait. Hort. Kew. a: 210. 1789. 



Shrubby, branched, perennial, glandular-pu- 

 bescent; stems erect or recurved, 3-io long, 

 armed with stout recurved prickles. Stipules 

 linear or lanceolate; leaves 3-5-foliolate; leaf- 

 lets ovate or ovate-oblong, acute or acuminate, 

 coarsely and unequally serrate, pubescent be- 

 neath, the terminal one stalked; inflorescence 

 mainly terminal, racemose-paniculate; bracts 

 small; flowers ^''-u" broad; petals white, ob- 

 ovate, much exceeding the sepals; fruit black, 

 pulpy, 6"-i2" long. 



In dry soil, New England to Florida and Arkansas, 

 mostly at low altitudes. May-June. Fruit ripe 

 July-Aug. A form with small white fruit occurs m 



Michigan. 



[Voi,. II. 



1824. 



Rubus villosus frondosua Bigel. ; Torr. Fl. U. S. i : 487. 

 Rubus frondosus Bigel. Fl. Host. Ed. a: 199. 1824. 



Less glandular, or merely pubescent ; stems erect or ascending ; flowers mostly fewer and smaller, 

 leafy-bracted. Range of the type, apparently extending further north and northwest. Perhaps 

 specifically distinct. 



Rubus laciniatus \Villd., found escaped from cnltivation in southern New York, has laciniate 

 or pinnatifid leaflets. It is a native of Europe. 



10. Rubus Alleghaniensis Porter. Mountain Blackberry. (Fig. 1899.) 



Rubus villosus var. mnnlaniis Porter, 

 Bull. Torr. Club, 17: 15. 1890. 



Rubus monlanus Porter, Bull. Torn 

 Club, ai: 120. 1894. Not Ort. 1852. 



Rubus Alleghaniensis Porter, Bull. 

 Torr. Club', 23: 153. 1896. 



Glandular or glandless, resembling 

 the preceding species in foliage and 

 flowers. Stems rather more slender, 

 red or purple, very prickly, erect or 

 ascending, 2-8 high. Leaflets usu- 

 ally narrower, ovate- lanceolate; fruit 

 narrowly oblong, oblong-conic or 

 thimble-shaped, 8"-i4" long, 3"- 

 4" in diameter, much less pulpy and 

 of a peculiar flavor; racemes some- 

 times very long, and pubescent; 

 drupelets oblong when dry. 



In dry soil, Ontario and northern New 

 York to Pennsylvania and perhaps to 

 Virginia, mostly at high altitudes. The 

 characteristic High Blackberry of the 

 mountains of the Eastern and Middle 

 States. May-July. Fruit ripe Aug.-Sept. 



