POMACEAE. 181 



red or scarlet, mostly lustrous, usually 1-1.5 cm. 

 long ; stamens 10 or less ; anthers rose-color, purple 

 or red ; leaves mostly membranaceous, hirsute on the 

 upper surface while young. IV. Tenuifoliae. 



Fruit subglobose, obovate or short-oblong, scarlet, 1.5- 

 2 cm. long; flesh thick; nutlets thick, pointed at 

 the ends; usually slightly ridged; corymbs tomen- 

 tose ; leaves membranaceous, broad, cuneate to 

 rounded or cordate at the base, more or less pubes- 

 cent below ; stamens 10 or less ; anthers white or 

 pink. •' V. Molles. 



Fruit short-oblong to subglobose, 1.5-2 cm. long, scar- 

 let, lustrous; flesh succulent; nutlets 3-5, grooved 

 and occasionally ridged on the back; corymba 

 slightly villose ; leaves large, membranaceous, ob- 

 long, more or less acutely lobed; stamens 10 or 

 less; anthers rose-color. VI. Flabellatae. 



Leaves cuneate at the base (rarely broad in Intricatae), sub- 

 coriaceous or membranaceous. 

 Corymbs many- or few-flowered ; glabrous or villose ; fruit 

 subglobose, 9-12 mm. in diameter, leaves dark green and 

 lustrous on their upper surface. VII. Coccineae. 



Corymbs usually few-flowered ; fruit subglobose to short- 

 oblong or obovate, 1-1.5 cm. long, greenish-yellow, 

 orange-color or red; nutlets 3-5, rounded at the ends, 

 generally conspicuously ridged on the back. 



VIII. Intricatae. 

 Flowers solitary or in 2- or 3-flowered, simple corymbs; 

 calyx-lobes large and f oliaceous ; stamens 20 ; anthers 

 pale yellow ; leaves obovate, nearly sessile ; small shrubs. 



IX. Uniftorae. 

 2. Nutlets with longitudinal cavities on their ventral faces : fruit pyri- 

 form to subglobose or short oblong, 1-1.5 cm. in diameter, lus- 

 trous, orange or scarlet ; nutlets 2 or 3, usually obtuse at the ends, 

 prominently ridged on the back. X. Tomentosae. 



I. Crus-galli. 

 Stamens 10, rarely 12-15. 

 Anthers rose-color. 



Primary veins within the parenchyma, leaves obovate cuneiform, 

 mostly rounded at the apex ; stamens 10 ; fruit short-oblong, 

 often covered with a glaucous bloom 8-12 mm. long ; nutlets 2. 



1. C. Crus-galli. 

 Primary veins without the parenchyma, thin but conspicuous. 



Leaves obovate to oval, acute at the apex ; stamens 15 ; fruit 

 short-oblong, dull red covered with a glaucous bloom 1-1.2 

 cm. long; nutlets 2. 2. C. rivalis. 



Leaves oblong, cuneate to ovate or rarely obovate, ac\ite or 

 rarely rounded at the apex; stamens 10-13; fruit short- 

 oblong to subglobose, dark crimson, lustrous 1.2-1.5 cm. 

 long; nutlets 3-5. 3. C. Canbyi. 



Anthers pale yellow. 



Leaves obovate, acute, acuminate or rarely rounded at the apex, 

 their primary veins mostly within the parenchyma ; stamens 5- 

 10, rarely 12; fruit short-oblong, 1-1.2 cm. long, dark dull crim- 

 son; nutlets 1 or 2. 4. C. Arduennae. 

 Leaves obovate-cuneate, short-pointed or rarely rounded at the apex, 

 their primary veins very slender, mostly vdthout the parenchyma ; 

 stamens 8-10 ; fruit subglobose, dark crimson, rather lustrous 8-9 

 mm. in diameter; nutlets 1 or 2. 5. C. Bartramiana. 

 Stamens 20 ; leaves obovate, acute ; fruit oblong, bright crimson. 



6. C. Pennypackeri. 



