3(2). Leaves more or less scabrous on upper surface, pilose-woolly on lower sur- 

 face; pith usually brown; fruits white at maturity. .3. C. Drummondii. 



3. Leaves glabrous or nearly so; pith white; fruits bluish at maturity 



4. C foemina. 



1. Cornus stolonifera Michx. Red-osier dogwood. Fig. 602. 



Shrub 2-5 m. tall, erect, with reddish or purplish branches; pith white; leaves 

 deciduous, ovate to ovate-lanceolate, shortly acute, 3-10 cm. long, the upper sur- 

 face dark-green and glabrate, the lower lighter green surface with prominent veins 

 and microscopically puberulent with appressed straight 2-branched hairs; cymes 

 2-5 cm. across, their peduncles and branches sparsely to densely pubescent; flowers 

 whitish, appearing after leaves; style glabrous; mature drupe subglobose, white to 

 bluish, the stone 4-5 mm. wide and smooth or furrowed. 



Wet soil about springs, along streams and on wet seepy slopes, often with wil- 

 lows and alders, in N.M. (widespread in mts.) and Ariz. (Apache and Coconino, 

 s. to Cochise and Pima cos.), May-July; Can. and Alas., s. to D.C., N.M., Ariz, 

 and Calif. 



2. Comus racemosa Lam. 



Shrub or small tree to 5 m. high often forming thickets, the slender twigs reddish, 

 soon becoming grayish, the pith usually pale-brown; leaves narrowly ovate or 

 lanceolate to elliptic, mostly 4-8 cm. long, to about 4 cm. wide, abruptly long- 

 acuminate, cuneate at base, papillose and somewhat whitened beneath, minutely 

 appressed-strigillose on both sides; lateral veins 3 or 4 on each side; inflorescences 

 often numerous, usually paniculiform, to 6 cm. long; pedicels and branchlets red- 

 dish; fruit at first lead-color, becoming white with maturity, 5-7 mm. high, the 

 stone obliquely subglobose. C. candidissima Marsh., non Mill. 



In moist or wet soil on seepage slopes, in swamps, thickets and on stream banks 

 in open woodlands in e. Tex. and s.e. Okla. (McCurtain Co.), Apr.-June; from 

 Me. to Man., s. to Fla. and Tex. 



3. Cornus Drummondii C. A. Mey. Rough-leaf dogwood. 



Shrubs or small trees to 5 m. tall; branchlets gray or sometimes dark-brown or 

 reddish, the pith brownish; leaves with petioles to 15 mm. long, ovate to elliptic- 

 lanceolate, usually abruptly acuminate-attenuate at apex, to 10 cm. long and 6 cm. 

 wide, more or less scabrous on upper surface, pilose-woolly on lower surface with 

 the hairs mostly spreading; cymes (or corymbs) round-topped, pubescent, to about 

 75 mm. across; flowers white or creamy-white, somewhat malodorous; corolla 

 cylindric in bud; petals 3.5-5.5 mm. long; fruits white, 5-6 mm. in diameter, the 

 stone globose. C asperifolia ot auth. 



In damp woodlands and thickets, swamp at head of lakes and seepage areas, 

 occasionally on dry hills, in e. half of Tex. and Okla. (Jefferson and Woodward 

 COS.), Apr.-June; from e. Va., s. Ind. and s.e. Mo. and Okla., s. to Fla. and Tex. 



4. Cornus foemina Mill. English dogwood. 



Shrub or small tree to 4 m. tall; branchlets reddish or brown, smooth, the pith 

 usually- white; leaves with petioles 1 cm. or less long, broadly lanceolate to nar- 

 rowly ovate-elliptic, tapering to a narrow elongate tip, to about 10 cm. long and 

 4 cm. wide, glabrous or nearly so, dark-green on upper surface, paler on lower 

 surface; cymes round-topped, open; flowers creamy- white; corollas subcylindric in 

 bud; anthers bluish; fruits bluish, about 5 mm. in diameter, the stone longer than 

 broad and slightly furrowed. C. stricta Lam., Svida stricta (Lam.) Small. 



Swamps, seepage bogs and low wet woodlands in e. Tex., May-June; from Ind. 

 and Va., s. to Fla., La. and Tex. 



1266 



