No. 8] Rose (Rosacea). 6 9 



(a) Flowers, yellow. Leaflets, three (apparently five, by 

 the parting of the side leaflets). Fruit, a dry head 

 of achenes. (3) Potentilla (Cinquefoil). 



(a) Flowers, rose, changing to white. Leaflets, three to 

 five. Fruit, globular, enclosing bony achenes. (4) 

 R6sa (Rose). 



(1) Genus RIjbus, Tourn. (Raspberry. Blackberry.) 



From a word meaning "red." 



Flowers, white. Petals, five distinct, soon falling. Sepals, 

 five, partly united, spreading. Stamens, numerous, 

 on the edge of the disk. Seed-cases, many, each with 

 two young seeds, only one of which ripens, crowded 

 on a lengthened fleshy receptacle. 



Leaves, compound. Stems, armed with prickles, except in 

 Dwarf Raspberry (R. triflorus, Rich). 



-Fruit, a pulpy, edible "berry," so called, formed by the 

 ripened seed-cases ; really, a mass of small drupes. 



Leaf resembling Fig. 37. — Dwarf Raspberry. R. triflbrus, Rich. 



Flowers, white, one to three on a slender stem. Petals, 

 small, erect, slightly longer than the sepals. Petals 

 and sepals often six or seven. 



Leaflets, three or five, one to two inches long, double- 

 toothed, thin and nearly smooth. 



Stem, slightly woody or herbaceous, with herbaceous 

 branches, short (six to twelve inches), without 

 prickles, ascending or trailing. 



Fruit, rather sour, dark red, of a few disconnected grains, 

 which, when ripe, separate from the receptacle. 



Found, from New Jersey northward and westward, in moist 

 woods. 



