The Flora of the Cayuga Lake Basin 249 



e. Leaves simply serrate, thick, glossy, short-petioled, narrowly obovate or 

 elliptic-oblanceolate ; anthers pink; (thorns often long and recurved). 



2. C. Crus-galli 

 e. Leaves incised-serrate or doubly serrate or shallowly lobed, not very thick 

 nor conspicuously glossy, short- or long-petioled, oval or obovate. 

 /. Leaves with thick, rather blunt teeth ; anthers white or cream-colored ; 

 flesh of fruit firm. 

 g. Sepals linear-lanceolate, entire or nearly so ; flowers about 14 mm. in 



diam. 4. C. Margaretta 



g. Sepals broader, glandular-serrate or pinnatifid ; flowers about 20 mm. 

 in diam. 11. C. straminea 



f. Leaves with sharp slender teeth ; anthers cream-colored or pink ; sepals 

 usually serrate ; flesh of fruit more succulent. 5. C. Brainerdi 

 d. Petioles stout, when young (0.9) 1.1-1.3 mm. in diam., when old 0.9-2 mm. 

 in diam. ; leaves thick ; veins prominent, parallel, usually impressed ; sepals 

 serrate. 6. C. macracantha 



c. Stamens 17-22; leaves glabrous or hairy. 



d. Leaves elliptic or oblanceolate, subappressed-villous on the veins beneath, 

 strongly impressed-veined ; twigs gray ; styles and nutlets 3 (4) ; flesh of 

 fruit firm. 3. C. punctata 



d. Leaves broader ; twigs reddish or brownish ; styles and nutlets 2-3 ; flesh 

 of fruit usually succulent. 

 e. Leaves strigose above or glabrous, not strongly veined ; petioles rather 

 slender, when young 0.5-0.9 mm. in diam., when old 0.8-1.5 mm. in diam. ; 

 fresh, unopened anthers 1.8-2 mm. long; styles and nutlets generally 3; 

 fruit 9-15 mm. in diam. 5. C. Brainerdi 



e. Leaves stiff-velvety beneath, strongly veined ; petioles stouter, when young 

 0.9-1.2 mm. in diam., when old 1-1.8 mm. in diam.; fresh, unopened 

 anthers 0.7-1.3 mm. long; styles and nutlets generally 2; fruit 7-10 

 mm. in diam. 

 /. Twigs glabrous, reddish, polished; leaves glabrous above, thick when 

 old ; sepals broad, strongly serrate ; fresh, unopened anthers 0.7-1 mm. 

 long; fruit globose; pedicels 5-33 mm. long. 7. C. succulenta 



f. Twigs hairy, brownish, rather dull ; leaves hairy above, rarely glabrate, 

 thinner, duller, and more lobed ; sepals narrow, slightly serrate ; fresh, 

 unopened anthers 1.2-1.3 mm. long; fruit oval, some with short pedicels 

 (as short as 3 mm. or even 1 mm.). 8. C. Calpodendron 



. Leaves subcordate, truncate, rounded, or rarely subcuneate at base, in outline 

 ovate or oval, incised or lobed ; veins rather distant and not conspicuously 

 parallel, irregular, often widely spreading; styles and nutlets (3) 4-5; petioles 

 slender ; winter buds glutinous or nonglutinous. 

 c. Stamens about 20 ; leaves more or less waxy to the touch, glabrous or glabrate ; 

 corymbs glabrous; filaments usually somewhat connate at base; (sepals sub- 

 connate at base, subentire, triangular ; young foliage bronzy green ; winter 

 buds nonglutinous ; fruit generally glaucous, with a prominent hypanthium 

 and firm or only slightly succulent flesh). 

 d. Pedicels short and stiff, not drooping ; corymbs few-flowered ; leaves deltoid- 

 ovate, entirely glabrous; teeth only moderately sharp; flowers 18-20 (25) 

 mm. in diam.; disk 4 (5) mm. wide; anthers pale pink; fruit tardily green- 

 ish cherry red, 11-15 mm. in diam., very glaucous. 12. C. pruinosa 

 d. Pedicels slender, more or less drooping; corymbs many-flowered; flowers 

 20-25 mm. in diam. ; fruit soon deep red. 

 e. Leaves round-ovate, often subcrenate, rather blunt, entirely glabrous ; 

 teeth thick and bluntish ; disk 6 mm. wide ; anthers pale pink ; fruit 

 strongly drooping, cherry red, very glaucous, generally 15-19 mm. in 

 diam. 13. C. sp. 



