60 ROSACEiE. 



2. S. IDoUglasii, Hooker. Darker flowers in dense panicles. Wet places. 



* • Herbaceous with a vvuody base; flowera white. 



3. S. csespitosa, Nutt. Tufted: flowers in dense spikes on leafy scapes. 



4. S. occidentalis, Watson. Simple glabrous stems 2-6 ft. high: panicle cymose. 



4. ABXINCTIS. Liunseua. 

 1. A. Sylvester, Kost. Smooth, .3-5 ft. high: flowers dioecious: stamens exserted. 



5. ERIOGYNIA, Hooker. 

 1. E. pectinata, Hook. Cespitose, creeping; branches erect: stamens included. 



6. HOLODISCUS, Maximowicz. 

 1. H. discolor, Max. Flowers mostly dull white or light buflf: carpels hairy. 



7. PHYSOCAEPUS, Maximowicz. 

 1. P. opulifoUa, Max. Bark shreddy: leaves 3-lobed: corymbs 2 inches broad. 



8. CHAM^EBATIARIA, Maximowicz. 

 1. C. Millefolitun, Max. Leaves narrowly lanceolate, 1-.'' inches long. 



9. CHAM.ffiBATIA, Beutham. 

 1. C. foUolosa, Benth. Strong scented, viscid: leaves ovate to oblong. 



10. RUBUS, Linnaeus. 



Stems woody: leaves simple, palmately lobed : no prickles 1 



Stems woody: leaves mostly 3-foliolate: more or less prickly 2, 3, 4 



Stems herbaceous, trailing, not prickly : carpels few 5, 6 



1. R. Nutkanus, Mocino. Large leaves: large rose-like flowers. 



2. R. leucodermis, Dougl. Leaves white below, veins pricky. (Kaspberry.) 



3. R. speotabilis, Pursh. Flowers large, red-purpl(s: fruit yellow or crimson. 



4. &. ursinus, C. & S. Stems weak, often long-trailing: very prickly. (Blackberry.) 



5. R pedatus, Smith. Leaves 3-foliolate or nearly 5-foliolate: fruit red. 



6. R. lasiococcus, Gr. Stouter: leaves mostly 3-5-lobed: fruit tomentose. 



11. CERCOCARPUS, HBK. 



i, C. parvifolius, Nutt. Evergreen: leaves veiny, serrate above: wood hard. 



% 0> ledifolius, Nutt. Leaves narrow, entire margins revolute. (Mt. Mahogonv.) 



