ROSACEAE 



507 



Calyx persistent. 



Pistils numerous ; fruit drupelets 1. Rubus. 



Pistils numerous ; fruit an achene 2. Fragaria. 



1. Rubus. Raspberries and Blackberries 



Perennial herbs, shrubs or vines; vine prickly, with alternate leaves, 3-7 

 foliolate or simple; flowers terminal; axillary or solitary, white reddish or pink, 

 usually perfect; calyx 5-parted, petals 5, deciduous; stamens numerous; achenes 

 usually many, inserted on the receptacle, which is either fleshy or dry; carpels 

 forming drupelets. About 200 species chiefly Northern. 



Rubus Idaeus L. var. aculeatissimus (C. A. Mey.) Regel & Tiling. Wild 



Red Raspberry 



Stems biennial, upright shrubs covered with straight, stiff bristles, some 

 hooked, and glandular hairs; leaflets 3-5, oblong, ovate, pointed, whitish, downy 

 underneath; petals as long as the sepals, whitish; fruit light red. Spreads by 

 suckers. 



Distribution. The species is native to the Appalachian Mountains as far 

 south as the Carolinas; common at high altitudes in the Rockies. Frequently 



Fig 267. Wild Red Raspberry (Rubus Idaeus, var- 

 aculeatissimus). The prickles of the red raspberry produce 

 mechanical injury. (Ada Hayden). 



Fig. 268. Wild black cap rasp- 

 berry (Rubus occidentalis) . This 

 plant has thorns which are irritat- 

 ing. (Ada Hayden). 



