118 ROSACE2E. 



20. AGBIMONIA. Tournefort. 

 *.- A. Eupitoria, L. Hairy: 2-4 ft. high: racemes spicate: akene subglobose. 



81. AC.ZENA, Limueos. 

 i. A. trifida, R. & P. Leaves crowded at base: green flowers in terminal spike. 



22. POTEBIUM, Linnaeus. 



1. P. offlcixxale, B. & H. Flowers deep purple or red in a short spike. 



2. P. annuum, Nntt. Smaller: leaflets pinnatifid: flowers greenish. 



23. ROSA, Tournefort. 



1. B. Nntkana, PresL Spines stout: stipules broad; flowers 2 or 3 inches broad. 



2. B. pisocarpa, Gr. Globose fruit smaller, with a neck. 



3. B. Calif ornica, C. & S. Often tall: fruit ovoid, with a neck. 



4. B. spithamea, Watson. A span high or less: globose fruit glandular-prickly. 

 6. B. gymnocarpa, Nutt. Slender: calyx-lobes deciduous, leaving fruit naked. 







24. HETEBOMELES, J. Earner. 

 1. H. arbutifolia, Boem. Panicles terminal: fruit ripe in December. (Toyon.} 



25. PIBUS, Linnaeus. 



1. P. rivularis, Dougl. Leaves simple, woolly: fruit ovoid. 



2. P. sambucifolia, C. & S. Leaves pinnate: fruit globose, red. 



26. CBAT2EGT7S, Linnaeus. 



1. 0. rivularis, Nutt. Leaves ovate, serrate, rarely lobed. (Hawthorn. ) 



2. 0. Douglasii, LindL A large tree: leaves often incised: fruit 6 lines thick. 



27. AMELiANCHIEB, Medicns. 

 i. A. alnifolia Nntt. Flowers in short racemes: petals not ovate. (Shad-berry.) 



CALYCANTHACEJE. 



1. CALYCANTHTJS, Linnaeus. 



0. oceidentalis, H. & A Inner sepals and outer petals lurid purple or red, 

 inch or more long, slender, leathery: inner petals shorter, incurved. 



