50 DRUPACEiE. 



Kellog'^ii, Lemmon, Pitt. ii. 67 is a larger shrub with yellow dnipe 

 larger, more pulpy and sweeter. — The variety in Sierra Co. and north- 

 ward ; the type common in the middle and southerly parts of the State- 

 Fl. Apr., fr. Sept. 



3. CERASCS, Theophrasius (Cherey-Tree. Choke-Cherry. Islay). 

 Leaves conduplicate in the bud. Flowers corymbose or racemose from 

 lateral buds which are often leaf-bearing. Drupe globose, glabroiis, 

 destitute of bloom ; the sarcocarp sweet rather than acidulous (in our 

 species), often keenly bitter, sometimes sour and astringent ; putamen 

 osseous or ligneous, smooth, mostly globose, not prominently margined. 



* Flowers corymbose , from lateral buds ; dritpe small, iriih bony puiavieii. 



— Cerasus proper. 



1. C. emarglnata, Dougl. in Hook. Fl. i. 169 (1830) ; C. glandulosa, 

 Kell. Proc. Calif. Acad. i. 59 (1855). Pnuius emarginala, Walp. Rep. ii. 9 

 (1843). Arborescent, 10-30 ft. high, the twigs reddish but dull, often 

 pubescent : leaves obovate or oblanceolate, obtuse or acute, rarely emargi- 

 nate, 1% — 3 in. long, finely serrulate, distinctly biglandular at summit of 

 the short petiole : corymbs much shorter than the leaves, few-flowered : 

 drupe oval, dark red, bitter and astringent. — My only Oalifornian speci- 

 mens properly referable to this species were collected in Humboldt Co., 

 Chesnul & Dreiv ; but Dr. Kellogg had it from Placerville, and, under 

 the impression that our Coast Range cherry-bush was the true C. emargi- 

 nata, gave to the old species a new name. 



2. C. Californica. Prumis emargiaala, B. & W. Bot. Calif, i. 167, 

 excl. syn. & var. mollis, not of Walpers. Shrub 3—8 ft. high, branched 

 from the base and clothed throughout with a smooth shining bark : 

 leaves obovate, oblong or oblanceolate, obtuse, retuse or emarginate, on 

 sterile twigs acutish, ?:£ — IVg in. long, finely crenate-serrulate, mostly 

 uniglandular, and that on the lower part of the blade, well above the 

 junction with the petiole : fl. few, in a short corymb : frmt bright red, 

 intensely bitter.- -Hills of the Coast Range, from Humboldt Co., MarslMll, 

 to Mt. Tamalpais, Bolander, and frequent in the Oakland Hills ; also, in 

 a narrow-leaved form from Donner Lake in the Sierra, Rev. Dr. Boiitf', 

 northward to Siskiyou Co., Greene ; along streamlets or on drier ground, 

 but always a mere shrub, in aspect as well as in character quite distinct 

 from C emarginata. 



* * Floirers racemose, from axillary leajless bnds ; drupe large, viih lig- 



neous putamen. — Old genus Laurocbrasus. 



3. C. ilicifolia, Nutt. in H. & A. Bot. Beech. 340. t. 83 (1840). Prunus 

 ilicifoUa, Walp. 1. c. 10 (Islay). Shrubby or arborescent, evergreen, often 

 12—18 ft. high, with well rounded head and trunk clothed with a dark 

 rough bark : leaves ovate or ovate-lanceolate, obtiise or acute, truncate 

 or rounded at base, coarsely spinose-toothed, coriaceous, glossy above. 



