MALACEAE. 31 



cent when young, but early glabrous, 2.5-7.5 cm. long: pedicels slender: 

 petals linear, linear-spatulate or linear-oblong, 12-18 mm. long, 3-4 times the 

 length of the nearly or quite glabrous calyx and hypanthium : ponies gIol)ose, 

 red or purple, sweet, about 6 mm. in diameter. 



The JuNE-BEiiitY grows in dry woods in middle and western Florida. (Cont.) 



2. A. oblongifolia (T. & G.) Eoemer. Small tree or shrub, the foliage and 

 inflorescence densely white-woolly when young, often nearly or quite glabrous 

 when old: leaf -blades rounded, or sometimes narrowed or subcordate at the base, 

 finely and sharply serrate nearly all around: pedicels short, seldom over 2.5 cm. 

 long: petals spatulate or linear-spatulate, 6-14 mm. long, twice or thrice as 

 long as the calyx and hypanthium: pomes 6-8 mm. in diameter. 



The Shad-bush grows in sandy woods in northern Florida. (Cont.) 

 4. CRATAEGUS L.^ Small trees or shrubs, usually armed with thorns or 

 spines. Leaves alternate: blades simple, petioled. Flowers terminal, cymose 

 or corymbose. Hypanthium cup-shaped or campanulate, adnate to the carpels. 

 Sepals 5, reflexed after anthesis. Corolla white or pink. Petals 5, spreading, 

 rounded, inserted on the margin of the disk in the throat of the hypanthium. 

 Stamens 5-25, inserted in 1-3 rows on the edge of the hypanthium: filaments 

 slender, incurved: anthers oblong or suborbicular, white, yellow, pink or 

 purple. Ovary inferior, or its summit free, composed of 1-5 carpels: styles 

 1-5, not united, persistent: stigmas terminal. Pome globose, pyriform or 

 oval, yellow, orange-red, blue or black, containing 1-5 bony carpels, each 

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

 bloom in the spring. 

 Ilypostvle short and broad, upwardly and dorsally extended over the apes of the 



nutlets. I. COKDATAE. 



Ilypostyle confined to tbe ventral or lateral surface of the 

 nutlets, abruptly terminated at 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. Virides. 



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



stamens 20: fruit glabrous, 1.5 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 obnvate, 

 serrate and shallowly incised (deeply incised in 

 no. 40). IV. Saegentiaxae. 



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. Pulciierkimae. 



e. Corymbs 1-, 2- or 3-flowered. or frequently o-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. Sokoriae. 



Leaf-blades finely dentate or glandular-dentate, 



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



^ Descriptions and keys taken from the monograph of Crataegus by Mr. C. 

 D. Beadle, published in my Flora of the Southeastern United States (1903). 



