RUBUS 123 



toothed, 10-25 cm. broad; inflorescences cymose, terminal, few-flowered, 

 flowers 2.5-6 cm. broad, white, calyx lobes tipped with a long slender ap- 

 pendage, petals oval, 1-2.5 cm. long; receptacle large; fruit flattened- 

 hemispheric, edible but rather dry and tasteless : parviflorus, small- 

 flowered. 



In rocky woods, banks of streams etc. in the northern and northeastern 

 part of the state. Distributed from Michigan, Minn., western Ontario 

 to Alaska and south to California, and in the Rocky mountains to Utah 

 and Colorado. 



Rubus strigosus M i c h a u x 1803 Wild Red Raspberry 

 R. idaeus var. aculeatissimus (C. A. Meyer) Regel & Tiling 1877 



A branching shrub, 1-2 meters (3-6 ft.) high, biennial, usually densely 

 covered with weak bristles (glandular when young), or the older stems 

 with weak hooked prickles, often glaucous; leaves petioled, 3-5-foliate, 

 pinnate, leaflets ovate or ovate-oblong, pointed or acuminate, sharply ser- 

 rate or sometimes sharply lobed, whitish pubescent beneath, 2.5-7.5 cm. 

 long; petioles glandular-hairy and prickly, 2-8 cm. long; inflorescence 

 terminal and axillary, racemose, few-flowered, pedicels slender, curving 

 in fruit; flowers 8-12 mm. broad, petals white, ascending, 5-6 mm. long, 

 sepals bristly hispid 10-12 mm. long; fruit elongated-hemispheric, bright 

 red : strigosus, hairy, in reference to the bristly stem. 



Very common in thickets, on hillsides etc. throughout the state. Dis- 

 tributed from Labrador to British Columbia south to N. J., Pa., and the 

 Great Lake region and along the Alleghanies to N. C, in the Rocky 

 mountains to N. Mex. Flowers from May to July. Fruit ripe July-Sept. 



Rubus idaeus Linne 1753 Red Raspberry 



A shrub, resembling the preceding very closely, differs mainly in the 

 less bristly stem, and in having the calyx only woolly-pubescent instead 

 of bristly-hispid : idaeus Gr. of the woods. 



Very extensively cultivated and probably escaping from cultivation. 

 Introduced from Europe. 



Rubus occidentalis Linne 1753 Black Raspberry 



A shrub with recurved stems, sometimes 3-4 meters (9-12 ft.) long, 

 rooting at the tips, glaucous all over and armed with hooked prickles, 



