ROSACEAE (ROSE FAMILY) 8i 



oblong-ovate, cut-serrate; petals white, as long, as the bristly-hispid 

 calyx ; fruit light red, falling off . whole from the dry receptacle. 

 Thickets. May to July. 



R. occidentalis, Black Raspberry. Glaucous shrubs,, with stems 

 recurved and armed with hooked prickles, not bristly; leaflets mostly 

 3, ovate, coarsely double-serrate ; petals white, shorter than the sepals ; 

 fruit purple-black, falling off whole from the dry receptacle. Thickets 

 and fence rows. May, June. 



R. odoratus, Purple Flowering Raspberry. Unarmed shrubs, the 

 branches, stalks, and calyx bristly with glandular hairs; leaves simple, 

 3 to S lobed. the middle lobe prolonged; flowers large and showy; 

 petals rounded, purple rose-color; fruit large and red, separating from 

 the receptacle as in all raspberries. Rocky woods. June to August. 



R. triflorus. Dwarf Raspberry. Low and herbaceous, ascending 

 or trailing, unarmed; leaves with 3 or S leaflets, which are rhombic- 

 ovate or ovate-lanceolate, acute at both ends, thin and smooth; petals 

 small, erect, white or pink; fruit red, not separating easily from re- 

 ceptacle. Damp woods. May to 

 July. 



R. allegheniensis. Tall 

 Blackberry. Armed shrubs, 

 reaching 2 m. in height, the old 

 stems purplish and with stout 

 prickles; leaves palmately com- 

 pound with 3 or 5 leaflets, which 

 are villous above and velvety be- 

 neath ; branchlets, pedicelsy etc., Rubus allegheniensis. Tall blackberry, 

 glandular-pubescent ; fruit sub- 



cyclindric, blackish, not separating from the fleshy receptacle. Open 

 thickets and clearings. May to July. 



R. hispidus, Swamp Blackberry. Prostrate or nearly so, the 

 slender stem' beset with retrorse prickles ; leaflets thickish, dark green 

 or shining above ; racemes few-flowered ; fruit small, reddish-purple. 

 Moist woods and swampy meadows. 



R. villosus, Dewberry. Becoming prostrate, the rather woody stem 

 armed with stout retrorse prickles; fruiting branches upright; leaflets 

 thin, doubly serrate, flowers in leafy racemes; fruit blackish, with few 

 to many large drupelets. Dry, open places. 



SPSING FLOKA — 6 



