104 8APINDACEJB. 



Leaves pinnately 3-foliolate 3 



Flowers in drooping racemes: stamens 5, much exserted: leaves 3-foliolate, serrulate. . . 4 



1. 2ESCUI/CTS, Linnaeus. 

 I. 2E. Californicus, Nutt. Leaves palmately 4-7-foliolate, (Buckeye.) 



2. ACER, Tournefort. 



1. A. macrophyllum, Pursh. Yellowish flowers in dense racemes: fruit hairy. 



2. A. circinatum, Pursh. Corymbs 10-20 flowered: sepals red or purplish. 



3. A. glabrum, Torr. Sepals and petals greenish yellow: filaments naked. 



3. NEGUNDO, Moench. 

 L N. Californicum, T. & G. Calyx minute: petals none, dioecious. (Box-Elder.) 



4. STAPHYLEA, Linnaeus. 

 2. S. Bolanderi, Gr, Leaflets broad, stipellate: fruit bladdery. Shasta. 



ANACARDIACE^E. 



BHTJS, Linnaeus. 



Slender deciduous shrubs: leaves 3-foliolate: fruit compressed globose. 



Flowers in dense axillary panicles: fruit smooth, dry, whitish ...... 1 



Flowers in short scaly -bracted spikes: fruit hairy, gummy, scarlet. ..., S 



Stout, diffuse evergreen shrubs: leaves simple, coriaceous: fruit ovoid. 



Flowers rose-color: leaves ovate on short petioles 3 



Flowers yellowish: leaves lanceolate on slender petioles 4 



1. B. diversiloba, T. & Gr. Stems erect or climbing by rootlets (Poison Oak). 



2. B. aromatica, Ait. var. trilobata, Gr. Diffusely slender-branched. 



3. B. integrifolia, B. & H Leaves entire or spinosely-toothed: fruit red, frostv. 



4. B. laurina, Nutt. 'Leaves glaucous, entire: panicles 2-4 inches long. 



1. Stamens distinct: shrubs (except No. 1). 



Leaves palmately 3-foliolate: yellow flowers in terminal close racemes. 1 



Stiff, much branched, evergreen: flowers red-purple, solitary, axillary , 2 



Leaves pinnate: flowers purple in dense axillary spikes: petal 1 9 



