492 KOSACEAE (ROSE FAMILY^ 



surfaces ; pedicels and sepals obscurely or not at all glandular. (R. hispidus, 

 var. suberectits Peck; B. setosus of auth., in part, notBigel.; B vermontanui 

 Blanchard ; B. semisetosus Blanohard?) — Open places, e. Que. to N. Y. and 

 Micl". 



31. R. permfxtus Blanchard. Recurving and soon prostrate ; stems (as well 

 as petioles, rhachis, pedicels, etc.) densely glandularrhispid and armed with 

 scattered stronger straightish or more often curved prickles ; leaflets glabrous 

 above, velvety beneath, rather small, those of the flowering canes 2-6 cm. long; 

 racemes few-flowered, short; flowers 1.5-2 cm. broad ; calyx glandular-hispid; 

 petals oblong-spatulate ; fruit short-cylindric, with few large drupelets, sweet. — 

 Dry soil in open places, s. e. Vt. 



32. R. tardktus Blanchard. Decumbent, becoming prostrate ; the subterete 

 slender stems with numerous straightish prickles, but with few or no glands; 

 petioles smooth or sparingly prickly ; leaflets smooth on both surfaces, those of 

 the flowering stems 4-10 cm. long ; racemes somewhat compound, corymbiform ; 

 pedicels glandular-hispid, occasionally setulose ; flowers 2 cm. broad ; petals 

 narrowly obo vate ; fruit globose, of few large sour drupelets. — Sandy soil, 

 York Co., Me. — Perhaps merely a form of the next. 



33. R. jilcens Blanchard. Similar, but tiie stem more glandular; leaflets of 

 the flowering stems 2-5 cm. long ; sfipals dorsally free from glands; fruit globose, 

 of a few sweet drupelets. — Dry open places, s. w. N. H. 



34. R. hispidus L. Prostrate or nearly so ; the slender terete often elongated 

 stems more or less beset with rett'orse prickles ; the branches suberect, 5-30 cm. 

 high ; leaflets glabrous on both surfaces, of firm texture, subcoriaceous, rather 

 dark green and somewhat shining above; racemes few-floujered, corymbiform; 

 rhachis and pedicels occasionally setulose ; flowers 1.5-2 cm. broad; fruit small, 

 reddish-purple, of few small sour drupelets. — Low woods and swampy meadows, 

 N. S. to s. w. Ont. and N. C, common. 



35. R. trivijllis Michx. Prostrate; stems terete, elongated, slender, armed 

 (as are also the petioles and often the peduncles) with broad-based flattish short 

 hooked retrorse prickles, not conspicuously glandular ; leaflets coriaceous, ever- 

 green, elliptical, rather sharply serrate ; peduncles \S-flowered , flowers 3-4 cm. 

 broad; petals broadly obovate ; fruit cylindrical, of many drupelets. — Dry 

 soil, Va. to Fla. and Tex., near the coast. 



36. R. rubrisStus Rydb. Similar ; the stems, petioles, and especially the 

 pedicels glandular-hispid with reddish or purplish hairs ; corymbs 3-9-flowered; 

 flowers 1.5-2.5 cm. broad; petals oblong-spatulate. — Sandy soil, Mo. to La. 

 and Fla. 



37. R. Tillbsus Ait. (Dewberry.) Becoming prosfraJe ; stems elongate, 

 subterete, rather woody, armed with stout slender retrorse straightish prickles; 

 fruiting branches upright, 1—3 dm. high, (l-)3-\5-flowered ; leaflets rhomiiic- 

 obovate, doubly and rather finely serrate, aoutish, membranaceous, smooth or 

 sparingly villous beneath ; flowers in leafy corymbiform racemes, 2-3 cm. broad; 

 sepals not foliaceous ; fruit subglobose to short-cylindric, with few-many large 

 juicy drupelets. (J?, canadensis of auth., not L.; if. procumbens Muhl.) — Dry 

 open places, s. Me., westw. and southw., common. Var. roribAcocs Bailey. 

 (LucRETiA D.) A large-flowered extreme, with elongated pedicels; the flowers 

 4 cm. broad; sepals often foliaceous. — W. Va., where doubtfully native ; and 

 in cultivation. 



Var. humiflisus T. & G. Stems slender, less woody; flowering branches 

 chiefly l-flowered ; flowers large, 3-4 cm. broad. (B. Enslenii Trattlnick ; B. 

 Baileyanus Britton ; B. subuniflorus Rydb.) — Chiefly near the coast, from e. 

 Mass. southw. 



(Several recently proposed species are obviously related to and not very clearly 

 ■distinct from B. villosus and await further study. ) 



38. R. inyisus (Bailey) Britton. Similar, but stouter ; the canes less pro- 

 cumbent ; leaflets, especially those of the vegetative shoots, simply and rather 

 coarsely toothed; pedicels long (becoming 1.5 dm. in length); sepals large, 

 foliaceous. — N. Y. to Kan. and southw. — The original of several cultivated 

 Dewberries. 



