rubus. ROSACEA. 183 



Var. Menziesii Watson Bot. Cal. i, 172. More or less densely tomentos 

 and silky. Southern Oregon and southward. 



R. leucodermis Dough T. & G. Fl. i, 454. Stems soft-woody, biennial, 

 erect, 3-8 feet high, glaucous, armed with stout straight or recurved 

 prickles: leaves trifoliolate, rarely 5-foliolate ; leaflets ovate to lanceolate, 

 acute or acuminate, doubly serrate, 1-2 inches long, white-tomentose be- 

 neath, smooth above, the petioles and veins beneath prickly ; flowers in 

 small terminal corymbose cymes; calyx-lobes lanceolate, long-acuminate, 

 closely reflexed, 3-4 lines long, longer than the spatulate petals : carpels 

 tomentose ; fruit dark purple when ripe, rather large, with a white 

 bloom and agreeable flavor : achenes minutely pitted. Common in rich 

 moist woods, Alaska to California- 



R. strigosus Michx. Fl. i, 297. Stems erect, suffruticose, biennial. 

 armed as well as the petioles, peduncles and calyx, with straight spreading 

 rigid bristles which are glandular when young, slightly glaucous : leaves 

 pinnately 3-5-foliolate : leafletf oblong-ovate, acuminate, often narrow, but 

 sometimes broadly ovate, occasionally confluent, incisely serrate, canes- 

 cently tomentose beneath, the terminal one often cordate at base, the 

 lateral ones sessile ; stipules setaceous, deciduous : peduncles axillary and 

 terminal; often aggregated at the summit of the branches so as to form a 

 leafy panicle. 4-6-flowered; petals white, erect, about as long as the spread- 

 ing sepals: carpels pruinose; fruit light red, very juicy. Hillsides and 

 rocky places, Eastern Oregon and Idaho to the Atlantic States and Canada. 



* * * Stems herbaceous, more or less trailing, unarmed : leaves 

 trifoliolate or 3-lobed : carpels few. 



R. arcticus L. St), i, 494. Stems low, somewhat pubescent, .mostly 

 erect, 1-2- flowered: leaves trifoliolate; leaflets rhombic-ovate, or obovate, 

 coarsely and often doubly serrate, petiolulate; stipules ovate : sepals lance- 

 olate, acute, often shorter than the obovate entire or emarginate petals : 

 fruit amber-color, very delicious. Marshes and river banks, Idaho to the 

 Rocky Mountains and far north. 



R. pedatus Smith Inc. Ined. t. 63. Stems trailing, filiform, 1-3 feet 

 long or more, rooting at the nodes, pubescent : leaves trifoliolate ; leaflets 

 cuneate-obovate, 8-12 lines long, incised and serrate, the lateral ones often 

 parted to the base, smooth or sparingly villous; stipu'es ovate-oblong: 

 flowers usually solitary, on long slender pedicels, white, 6-9 lines broad ; 

 sepals ovate-lanceolate, nearly glabrous, entire or incised, exceeding the 

 petals, at length reflexed: carpels glabrous; styles filiform, not thickened 

 upward : fruit 1-6 large red juicy drupelets. Common in the Coast and 

 Cascade Mountains, Alaska to California. 



R. lasiocoecus Gray Proc. Am. Acad, xvii, 201. Stems slender, creep- 

 ing, 2-12 inches long, cinereous-pubescent : leaves 3-5-lobed, rarely 3-f olio- 

 late, the obtuse lobes irregularly and doubly serrate; stipules ovate to 

 lanceolate, entire or lacerate : peduncles slender, equalling or exceeding 

 the leaves, 1-3- flowered: flowers white, 6-10 lines broad; calyx-lobes ovate, 

 acuminate, entire, exceeding the obovate petals; carpels densely tomen- 

 tose; styles thickened upward: fruit 1-3 large red tomentose juicy drupe- 

 lets. In shaded places, base of Mount Hood and other peaks of the Cas- 

 cade Mountains . 



§ 2. Fruit persistent upon the somewhat juicy receptacle 

 which is at length deciduous from the calyx : stems biennial, 

 trailing, prickly. 



R. nivalis Do ugl. Hook. Fl. i, 181. Stems slender, trailing, 1-4 feet 

 long, armed with small recurved prickles : leaves round-cordate, obscurely 

 to prominently 3-lobed, or rarely 3-foliolate, unequally serrate, usually 



