B137 



TRAILING BLACKBERRY 



Ru'bus macrope' talus 



Flowers white, in few-dowered 

 clusters, of 2 kinds: male (stam- 

 inate) with numerous stamens, 

 and essentially female (pistil- 

 late), borne on separate plants 



Outer flower parts (sepals) 5, 

 united at base, egg-shaped, 

 glandular and prickly, usually 

 taper-pointed, persistent 



Petals 5, about % to 1 in. long 

 (longer in male than in female), 

 1 to 2 times longer than sepals 



"Berry" (aggregated drupe- 

 lets) adherent to central core 

 (receptacle), black or dark pur- 

 ple, cylindric, about % to 1 in. 

 long, hairless 



Leaves alternate, mostly di- 

 vided into 3 leaflets 



Leaflets egg-shaped, pointed, 

 roughly toothed, green, some- 

 what hairy on both sides (es- 

 pecially so beneath); end leaflet 

 broader and longer (2 to 3 in. 

 long) than side leaflets, often 

 somewhat lobed 



Stems trailing, woody, bien- 

 nial, up to 25 ft. long, usually 

 unbranched the first year but 

 with many, short, flower-bear- 

 ing branches the second year, 

 hairless or slightly hairy, with 

 short, recurved prickles 



Trailing blackberry, also known as creeping blackberry and dewberry, is a 

 common and aggressive trailing shrub of the Pacific Northwest Although best 

 known because of its delicious fruit, this species is also of considerable range 

 significance, particularly on the cut-over lands in the Douglas fir region. This 



