CELASTRACEJBL 37 



CELASTRACEJE. 



A slender deciduous shrub with 4-angled branches: leaves 2-4 inches long 1 



A low much-branched evergreen: leaves 6-18 lines long, numerous 2 



1. ETJONYMUS, Tournefort. 

 1. E. occidentalis, Tourn. Flowers dark brown, parts in 5's, rotate, drooping. 



2. PACHYSTIMA, Kafinesque. 

 1. P. Mersinites, Baf. Flowers greenish, parts in 4's, about a line broad. 



RHAMNACE.E. 



Flowers greenish. Leaves alternate : flexuose branches spiny ^ 



Leaves alternate: not spiny: fruit juicy. 2 



Leaves opposite, 1 or 2 lines long: fruit dry 3 



Flowers white or blue, in dense clusters: fruit dry 4 



1. ZIZYPHTJS, Jussieu. 

 1. Z. Parryi, Torr. Peduncles axillary, recurved in fruit, 1-3-flowered. 



2. BHAMNUS, Linnaeus. 



Flowers apetalous and mostly dioecious: seeds concave 1, 2 



Flowers with minute petals, mostly perfect: seeds convex on the back 3, 4 



1. B. alnifolia, L'Her. Low: deciduous leaves acute at each end, serrate. 



2. B. crocea, Nutt. Leaves acutely denticulate, evergreen, thin. 



3. R. Californica, Esch. Leaves elliptical to ovate-oblong, evergreen, thick. 

 Var. tomentella, Gr. Densely white-tomentose. Both forms common in CaL 



4. B. PursMana, DC. Elliptical leaves 2 to 7 inches long, deciduous. 



3. ADOLPHIA, Meisner. 



i. A. Californica, Watson. In dense clumps 2 or 3 ft. high, branchlets spiny. 



4. CEANOTHUS, Linnaeus. 

 1. Leaves all alternate: fruit not crested. 

 Leaves 3-nerved from the base. 



Branches not rigid or spiny: leaves glandular serrate (except No, l)u 



Flowers white in large clusters ,.. 1, 2, 8 



Flowers blue 4, 5, 6 



