336 CORNEiE, 



4. C. stolonifera, Michx. Fl. i. 92 (1803); C. & E. 1. c. 86. Stems 

 numeroias, clustered, decumbent, forming a low thicket; twigs nearly 

 glabrous, red-purple; inflorescence appressed-pubescent: leaves mostly 

 oval or oblong and rather abrup.tly acuminate or only acute, at base 

 usually obtuse, both faces very minutely and sparsely appressed-pubes- 

 cent, but the lower very pale and appearing as if glaucesceut: cymes 

 small, flat- topped: calyx-teeth minute; fr. globose, white; stone little or 

 much compressed, furrowed on the edges. — An eastern species, crossing 

 the continent however in northerly districts, and reaching California, 

 in the northern coianties; Trinity Mts., C. C. Marshall. 



5. C. pubescens, Nutt. Sylv. iii. 54 (1842); C. & E. 1. c. 37. Shrub 

 6 — 15 ft. high, with smooth reddish branches : leaves ovate, acute, 2 — 4 

 in. long, paler and more or less pubescent beneath : fl. in convex cymes : 

 fr. white, subglobose, 2 lines broad; stone somewhat flattened, mostly 

 oblique, with a more or less prominently furrowed edge, the sides more 

 or less prominently ridged. Var. Califoriiica, C. & E. 1. c. C. Cali- 

 fornica, C. A. Mey. Pubescence said to be loose and spreading; leaves 

 more roimded and broader; stone smaller, etc. — Throughout the State, 

 in the variety chiefly; the type being mostly of a more northerly habitat. 

 Our common form has a vernal and also an aiatumnal season of flowering 

 and fruiting. 



* * Floirers greenish, involucrate ivilh 4 small caducous brads, 



umbellate, appearing with the leaves; drupe elongated. — 



Subgenus Macrocarpium, Spach. 



7. C. sessilis, Torr.; Dur. PI. Pratt. 89 (1855), and Bot. Mex. Bound. 

 94. t. 7; 0. & E. 1. c. 33. Shrub 6—15 ft. high; bark of twigs greenish: 

 leaves rather crowded, ovate, short-acuminate, pale and appressed silky- 

 pubescent beneath : umbel terminal, nearly sessile, becoming lateral by 

 the development of the twig; pedicels many, slender, silky, 3 — 4 lines 

 long: involucre nearly as long, very thin, deciduous: petals narrow, 

 acuminate: fr. oblong, 1.2 io- long or less. — By streams at middle eleva- 

 tions of the Sierra, from Placer Co. northward. 



* * * Plant lorn, semiherbaceous ; fl. greenish, in a dense cyme, subtended, 

 by 4 petaloid white bracts. — Subgenus Cornion, Spach. 



8. C. Canadensis, Linn. Sp. PI. i. 118 (1753). Flowering stem simple, 

 erect from a subterranean creeping rootstock, 4 10 in. high: leaves 

 mostly in an apparent whorl of 6 at the summit, ovate to oblong, 1 — 2^^^ 

 in. long, acute at each end, subsessile: peduncle solitary, 1 in. long: 

 involucral bracts ovate, 4 — 8 lines long: ovary silky: fr. globular, 2 lines 

 thick. — In moist woods of the Coast Range from Mendocino Co. northward. 



* * * * Arborescent; fl. greenish, sessile on a thick convex receptacle, 



subtended by 4 — 6 large white petaloid bracts. — 



Genus Benthamidea, Spach. 



