30 



MALACEAE. 



usually 1-seeded. Seed erect, the testa membranous. HAW. The plants 

 bloom in the spring. All the species of Crataegus known to occur in Florida 

 are described below. 



Hypostyle short and broad, upwardly and dorsally extended over the apex of the 



nutlets. I. COEDATAE. 



Hypostyle confined to the ventral or lateral surface of the 

 nutlets, abruptly terminated nt the apex. 



a. Corymbs simple, 2-5-flowered, glabrous, expanding in 



February and early March : fruit globose, red or 



orange-red, ripening from May to July. II. AESTIVALES. 



b. Corymbs compound, many-flowered, usually glabrous 



(pilose in nos. 13 and 16), stamens normally 20: 



fruit red or yellow, less than 1 cm. in diameter. III. VIKIDES. 



c. Corymbs 4-10-flowered, glabrous or very nearly so : 



stamens 20 : fruit glabrous, 15 mm. in diameter 

 or less, at maturity yellow, orange, green or red, 

 the flesh firm : leaf -blades glabrous when grown, 

 ovate, lanceolate, elliptic or sometimes obovate, 

 serrate and shallowly incised (deeply incised in 

 no. 40). IV. SAHGENTIANAE. 



d. Corymbs similar to those of the next preceding sec- 



tion : fruit small, oval, subpyriform or globose : 

 leaf-blades deeply and acutely incised or with 

 numerous serrate rounded lobe-like incisions. V. PULCHEREIMAE. 



e. Corymbs 1-, 2- or 3-flowered, or frequently 5-7-flow- 



ered, the pedicels and hypanthium either glabrous, 

 pubescent or tomentose : fruit glabrous, yellow, 

 green, orange or red, the flesh usually soft, and 

 pleasant to the taste : leaf-blades various in out- 

 line, serrate, crenate, dentate or entire, pubescent 

 or glabrous : branches often pendulous. 

 Flowers produced in few-flowered, mostly 5-7-flow- 

 ered corymbs : pedicels and hypanthium pubes- 

 cent or glabrous (densely white-tomentose in 

 no. 78) : leaf -blades serrate, dentate or crenate, 

 pubescent or glabrous : branches spreading or 

 ascending or occasionally drooping as in the 

 VISENDAB. 

 Leaf-blades serrate or coarsely and Irregularly 



dentate. VI. SOEOEIAE. 



Leaf-blades finely dentate or glandular-dentate, 



usually with several tooth-like lobes. VII. VISENDAE. 



Flowers produced In few-flowered, mostly 3-5-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. VIII. INTEGEAE. 



Leaf-blades toothed, often lobed. IX. DENTATAE. 



Fruit averaging less than 1 cm. in diameter. X. ANISOPHTLLAB. 



Mature fruit pyriform. 



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



Fruits smaller. XII. RECURVAE. 



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. XIII. LEPIDAE. 



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. XIV. UNIFLORAE. 



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. XV. CBDS-GALLI. 



