32 



MALACEAE. 



Flowers produced In few-flowered, mostly 3-o-flow- 

 ered corymbs : pedicels and hypanthium tomen- 

 tose or pubescent : leaf-blades dentate, crenate 

 or entire, either tomentose, pubescent or 

 glabrous : branches mostly drooping. 

 Mature fruit globose, subglobose or oval. 



Fruit averaging 1 cm. in diameter or more. 

 Leaf-blades entire or nearly so. 

 Leaf-blades toothed, often lobed. 

 Fruit averaging less than 1 cm. in diameter. 

 Mature fruit pyriform. 



Fruits 1.5-2 cm. long, over 1 cm. thick. 

 Fruits smaller. 

 Flowers solitary, 2 or 3 together (usually more In 

 no. 132) : pedicels and hypanthium glabrous or 

 pubescent : leaves small ; blades cuneate or spatu- 

 late, or sometimes with abruptly contracted bases : 

 spines usually numerous : sepals narrow. 



f. Corymbs with a single flower each, or 2 or 3 flowers, 



or occasionally more : sepals long and usually con- 

 spicuously incised : fruit globose or pyriform, at 

 maturity red, yellow or greenish, the flesh firm : 

 leaves relatively small ; blades spatulate, elliptic 

 or ovate : spines usually numerous, long and 

 slender. 



g. Corymbs several-many-flowered, glabrous : stamens 



7-20 : fruit red, green and red or yellow, the flesh 

 firm or succulent : leaf-blades mostly shining, obo- 

 vate, spatulate, oval or elliptic, glabrous or nearly 

 so when fully grown : branches frequently armed 

 with numerous large spines, or occasionally 

 unarmed. 



L CORDATAE. 

 Leaf-blades broadly ovate, cordate, truncate or abruptly cont 



Leaf-blades spatulate or oblanceolate, narrowed or cuneate 

 at the base. 



IL AESTIVALES. 



Shoots, petioles, and lower surfaces of the leaf-blades rufous- 



tomentose. 

 Shoots, petioles, and leaves glabrous or nearly so. 



Leaf-blades with abruptly contracted bases. 



Leaf-blades with cuneate or narrowed bases. 



III. VIRIDES. 



Leaf-blades coarsely and irregularly serrate, often with blunt 

 or acute shallow lobes. 

 Leaf-blades ample, 2-4 cm. wide. 



Leaf-blades (exclusive of those on the shoots) 1-2 cm. 

 wide : twigs very spiny. 

 Leaf-blades all sharply serrate and Incisely lobed. 



IV. SARGENTIANAE. 



Mature fruit yellow, orange-yellow, or green sometimes 

 checked with red : anthers dark-purple : leaf-blades not 

 conspicuously elongate. 



V. PULCHERRIMAE. 



Fruit oval at maturity, the flesh attenuate with the pedicels. 

 Fruit 6-8 mm. long. 

 Fruit 10-12 mm. long. 

 Fruit globose or nearly so, the flesh not attenuate with the 

 pedicel. 

 Leaves more than 2 cm. wide. 



Leaf-borders with round, usually sharp-pointed, lobes. 

 Leaf-borders with acute lobes. 

 Leaves (exclusive of those on the shoots) mostly less 

 than 2 cm. wide. 



VI. SORORIAE. 



Anthers yellow, white, or cream-color. 



Fruit yellow and red, or orange-red with ruddy cheeks. 



VIII. 

 IX. 

 X. 



ixtegrae. 

 Dentatae. 

 Anisophyllae. 



XI. Colonicae. 

 XII. Recdrvae. 



XIII. Lepidae. 



XIV. Unifloeae. 



XV. Crl'S-galli. 



racted 

 1. C. 



at the base. 

 apiifoUa. 



C. spathiilata. 



3. C. aestivalis. 



4. C. 



5. C. 



maleoides. 

 litculenta. 



palndosa. 

 subviridis. 



9. C. contrita. 



10. C. 



11. C 



12. C. 



13. C. 



pulcherrima. 

 abstrusa. 



assimilis. 

 robtir. 



14. C. concinna. 



