7. ©. papillosus, Torr. & Gr. More or less hispidly villous or tomentose, 4 to 6
ft. high; leaves glandular-serrulate, and the upper surface glandular-papillose, narrowly
oblong, 1 to 2 inches long on slender petioles; flowers blue, in close clusters or short
racemes, terminating slender naked peduncles; fruit not resinous.
§ 3. Leaves small, often opposite, very thick, with numerous straight lateral veins; stipules
mostly large and warty; flowers in sessile or shortly peduncled axillary clusters; fruit
larger, with 3 horn-like or warty prominences below the summit.
8 C. crassifolius, Torr. Erect 4 to 12 ft. high, the young branches white with a
villous tomentum; leaves somewhat spinosely-toothed or rarely entire and revolutely
margined; flowers ligh+ blue or white, in dense clusters.
SAPINDACEM. (BUCKEYE FAMILY.) 37


9. C. cuneatus, Nutt. Similar to the last, but less tomentose; leaves cuneate-
obovate or oblong, retuse above, on slender petioles; flowers in looser clusters.
10. C. rigidus, Nutt. Erect, 5 ft. high, the branchlets tomentose; leaves 2 to 5
lines long, cuneate-oblong or broadly obovate, few toothed above, very shortly petioled;
flowers bright blue.
OrnpER VITACEZ has but one representative; the well-known California wild grape,
Vitis Californica, Benth., which is common on the woody banks of streams.
Orper 19. SAPINDACEA.
Trees or shrubs, mostly with compound or lobed leaves, with unsymmetrical or irregular
flowers; the order best characterized under its suburders.
Under the order proper belongs


1. A3SCULUS, L. Buckeye.
Leaves opposite, palmately 4-7-foliolate. Calyx tubular, unequally 5-toothed. Petals
4 or 5, unequal, with claws. Stamens 5 to 7, exserted and often unequal. Ovary
3-celled; style long. Fruit a large leathery 3-valved pod.
