147 



of those enrolled for work under the patronage of Doctor Torrey's 



name, the example of his own way of dealing with such names 



as JJlUia, PortcrantluLS and NeoivasJiingtonia. 



National Museum, 

 Washington. 



TWO NEW DEWBERRIES OF THE HISPIDUS GROUP 



Bv W. H. Blanchard 

 The first is a dewberry and belongs to the Hispidus group, but 

 it is very distinct from an}'thing yet described. I propose to 

 name it 



Rubus jacens sp. no v. 



Small-stemmed glabrous-leaved plants with five thin, narrow- 

 leaflets, slender prickles, glanded hairs, late flowers, nearly pros- 

 trate and tipping freely. 



Nciv canes. — Stems decumbent at first, eventually nearly 

 prostrate, 2 to 3.5 feet long, slender, terete, red above, green 

 below, generally unbranched, without pubescence, tipping early 

 in September. Primary prickles slender, slanting backward, set 

 at random, about 20 to the inch of stem ; secondary prickles 

 smaller and weaker, quite as numerous, shading to tapering hairs 

 tipped with small glands. Leaves delicate, thin, 5-foliolate, dark 

 yellow-green above, light-green below, glabrous. Leaflets nar- 

 rowly oval, long-pointed, wedge-shaped at the base, finely and 

 somewhat doubly serrate (not serrate-dentate), the middle one 

 about 2 inches long, the others smaller. Petiole and petiolules 

 slender, grooved above, with slender, hooked prickles and a few 

 glanded hairs; the petiolule of the middle leaflet 0.5 inch long, 

 the side ones short, and the basal leaflets sessile. 



Old canes. — Stems prostrate, prickles and glanded hairs con- 

 siderably impaired, no old leaves remaining. Second year's 

 growth entirely of leafy, erect branches or stemlets tipped with 

 inflorescence, one from the axil of each old leaf. Axis of stem- 

 lets zigzag, terete, slender, faintly pubescent, with a ^ftw weak 

 prickles and glandular hairs. Leaves 3-foliolate, pointed, cuneate 

 at the base, sharply and in part doubly serrate, color and texture 

 like those of new canes. Inflorescence a short raceme 1.5 inches 

 long, prickles few and weak, glanded hairs few, pubescence faint, 

 pedicels slender, 8 to 12, set at nearly a right angle to the axis, 

 subtended by small bracts or often large ones, passing to small 



