RUTACEiE, 75 



Sepals, petals and stamens each 4 or 5, the latter inserted outside of a 

 disk encircling the ovary. Ovary 2-celled, surmounted by a short style, 

 and becoming an orbicular broadly winged 2-seeded samara. 



1. P. creimlata, Greene, Pittonia, i. 216 (1888). Tree 10—25 ft. high, 

 strongly aromatic when fresh ; glabrous except the tomentulose flowers, 

 and a sparse pubescence on the lower face of the leaves and on the fruit : 

 leaflets cuneate-obovate, obtuse or acute, 1 — 3 in. long, crenulate or 

 crenate-serrate : filaments vdlous near the base : samara ^4' in. long and 

 as broad, truncate or emarginate at both ends, often triquetrous and 

 3-seeded. In the Coast Range, from Lake Co. southward through Contra 

 Costa, etc. May. 



Order VIII. SAPINDACE/E. 

 Jussieu, Annales du Museum, xviii. 476 (1811). 



Trees or shrubs with opposite compound, or at least deeply lobed 

 leaves, without stipules. Inflorescence compound, usually racemose or 

 thyrsoid. Sepals 5, nearly distinct, or joined into a tubular calyx. 

 Petals 4 or 5, distinct, and, with the few and definite stamens, inserted 

 hypogynously, or around a hypogynous disk. Fruit a 3-celled capsule, 

 or a double samara. Seeds large ; without albumen. 



1. STAPHYLEA, Linnirus (Bladder-Nut). Shrub with opposite 

 stipulate, pinnately 3 — 5-foliolate leaves, the leaflets stipellate, and 

 flowers in pendulous racemose panicles. Calyx deeply 5-parted, the base 

 bearing a thick disk, the oblong lobes whitish. Petals 5, alternate with 

 the sepals. Stamens 5, alternate with the petals. Ovary 2 — 3-lobed, 

 becoming a bladdery 2 -3-celled capsule dehiscent at the apex. Seeds ^ 

 roundish, bony ; cotyledons fleshy. 



1. S. Bolaiuleri, Gray, Proc. Am. Acad. x. 69 (1874). Leaflets 3, 

 glabrous, broadly oval, 1 — 2 in. long obtuse, cuspidate or abruptly acute, 

 serriilate : sepals I4 in. long ; petals slightly longer, somewhat spatulate. 

 white : stamens and style well exserted : fruit linear-oblong, 2I3 in 

 long. From Shasta Co. to Fresno, at considerable elevations in the 

 middle ranges of the Sierra. 



2. ACER, Plini/ (Maple. Box-Elder). Trees or shrubs with oppo- 

 site palmately lobed or pinnately compound leaves without stipules. 

 Flowers small, greenish or reddish, in terminal racemes, umbel-like 

 corymbs, or fascicles, perfect or unisexual. Calyx usually 5-lobed. 

 Petals 5 or 0. Stamens usually 8 (3 — 12), in the perfect flowers inserted 

 with the petals upon a lobed disk. Ovary 2-lobed, 2-celled ; styles 2,, 



