132 MALACEAE (APPLE FAMILY) 



DD. Shrubs, either trailing vines or more erect plants, prickly. 

 E. Flowers red; fruit yellow or garnet; spreading bush, not even the longer branches 

 trailing. W. C. R. spectabilis (salmonberry) 



EE. Flowers white; fruit black; most of the species with the longest branches 

 inclined to trail, or all trailing. 

 F. Leaves much dissected into 7 to many small segments, evergreen. W. — Some- 

 times cultivated. R. laciniatus (evergreen blackberry) 

 FF. Leaves with 3-5 leaflets, not evergreen (except R. ursinus west of the Cas- 

 cades). 

 G. Trailing vine; carpels not pulling oflE from the receptacle in fruit (Black- 

 berry). W. C. E. R. ursinus (trailing blackberry) 

 GG. Stems erect or ascending, but the long branches often somewhat trailing; 

 carpels pulling off from the receptacle in fruit (Raspberry). 

 H. Stems not glaucous; fruit red. El R. strigosus (wild red raspberry) 

 HH. Stems glaucous; fruit black, 

 I. Leaves glaucous beneath. W. C. E. — ■ Sometimes cultivated. 



R. leucodermis (blackcap) 

 n. Leaves green beneath. E. R. hesperius 



ROSA (Rose) 



Leaves odd-pinnate ; stipules adnate. Flowers large. Calyx urn- 

 shaped; the tube contracted at the mouth, at length fleshy or berrylike, 

 inclosing the pistils. Pistils many. Akenes crustaceous or bony. — 

 (Latin name.) Many cultivated varieties. 



A. Calyx tube and fruit prickly. 



B. Flowers solitary at the ends of short leafy branches; fruit densely spiny. E. 



R. macdougall 

 BB. Flowers in corymbs; fruit not spiny. U. R. spithamaea 



AA. Calyx tube and fruit not prickly. 



C. Calyx segments deciduous when fruit is mature; leaflets doubly serrate. 



D. Sepals pinnati6d; leaflets densely resinous beneath, aromatic; spines recurved. 

 W. R. rubiginosa (sweetbrier) 



DD. Sepals not pinnatifid; leaflets not resinous beneath, not aromatic; spines 

 straight. W. C. E. R, gymnocarpa (naked rose) 



CC. Calyx segments persistent. 



E. Infra-stipular spines none. E. R. sayi (prickly rose) 

 EE. Infra-stipular spines usually present. 



F. Flowers solitary; rachis of leaves not prickly nor pubescent. W. C. E. 



R. nutkana (nutka rose) 



FF Flowers in corymbs, rarely solitary; rachis of leaves prickly or pubescent. 



W. C, R. pisocarpa (bunched rose) 



MALACEAE (Apple Family) 



Trees or shrubs. Leaves alternate, simple or odd-pinnate; 

 stipules caducous, free or nearly so. Flowers perfect, regular, 

 white or reddish, clustered. Calyx segments 5. Petals 5, on the 

 calyx cup. Stamens mostly 20, on the calyx. Ovary inferior^ 

 compound; carpels 2-5; styles as many as the carpels. Fruit 

 apple-like. 



