UOSACEJB. / 115 



2. S. Doug-lasii, Hooker. Darker flowers in dense panicles. Wet places. 



* * Herbaceous with a woody base: flowers white. 



3. 8. caespitosa, Nutt. Tufted: flowers in dense spikes on leafy scapes. 



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



4. ABUNCUS. Linnaeus. 

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



5. EBIOGYNIA, Hooker. 

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



6. HOLODISCUS, Maximowicz. 

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



7. PHYSOCABPUS, Maximowicz. 

 i. P. opulifolia, Max. Bark shreddy: leaves 3-lobed: corymbs 2 inches broad. 



8. nTTATVTJg-RATTATfcTA Maximowicz. 

 1. C. Blillefolium, Max. Leaves narrowly lanceolate, 1-3 inches long. 



9. GHAMJ9SBATIA, Bentham. 

 i. C. foliolosa, Benth. Strong scented, viscid: leaves ovate to oblong. 



1O. BUBTJS. Linnaeus. 



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



Steins woody: leaves mostly 3-foliolate: more or less prickly .................. 2 t 3, 4 



Steins herbaceous, trailing, not prickly : carpels few ............................. 5, 6 



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



2. B. leucodermis, Dougl. Leaves white below, veins pricky. (Raspberry.) 



3. R. epectabilis, Pursh. Flowers large, red-purple: fruit yellow or crimson. 



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



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



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



11. CEBCOCABPUS, HBK. 



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



2. O. ledif olius, Nutt. Leaves narrow, entire margins revolute. (Mt. Mahogony . ; 



