30 MALACEAE. 



1. PLATANUS [Toum.] L. Trees with smooth bark and stout irregular 

 branches from which are suspended the usually numerous long-peduncled 

 fruit-heads. 



1. P. occidentalis L. Tree becoming 55 m. tall, the bark pale: leaf -blades 

 3-5-lobed, 10-20 cm. broad, permanently woolly-pubescent on the veins 

 beneath: fruiting heads subglobose, 2-4 cm. in diameter, drooping. — Spr. 



The BcTTONWooD grows on the banks of streams in northern Florida. The 

 brown heart-wood is rather coarse-grained, heavy and hard but weak. Also known 

 as Sycamore or Buttonball. {Cont.) 



Fa^iily 4. MALACEAE. Apple Family. 



Trees or shrubs. Leaves alternate : blades simple and pinnately veined, 

 or pinnately compound. Flowers perfect, regular. Hypanthium adnata 

 to the ovaiy. Calyx of mostly 5 sepals. Corolla of mostly 5 petals. 

 Androecium of numerous, or rarely few, stamens. Gynoecium of 2-5 

 wholly or partially united carpels, or rarely of 1 carpel. Fruit a more or 

 less fleshy pome, being the thickened hyiDanthium enclosing the carpels. 



Carpels papery or leathery at maturity. 



Cavities of the ovary as many as the styles. 



Styles distinct : hypanthium-mouth more or less closed 



with a disk. 1. Pyeus. 



Styles united at the base : hypanthium mouth without a 



disk. 2. M.\Lus. 



Cavities of the ovary becoming twice as many as the styles. 3. Amel.\nchier. 

 Carpels bony at maturity. 4. Crataegus. 



1. PYEUS [Tourn.] L. Leaf -blades simple, usually toothed. Cymes 

 simple. Pome usually tapering to the base, the flesh with grit-cells. 



1. P. communis L. Tree, usually thorny: leaf -blades ovate, elliptic, or obo- 

 vate, slender-petioled, 3-8 em. long, acute or acuminate, glabrous or nearly so 

 in age, the base usually rounded: cymes few-several-flowered: pedicels 1.8-5 

 cm. long: sepals about as long as the hypanthium: corolla white, about 2.5 

 cm. broad: pome, in the wild form, seldom over 5 em. long, in the numerous 

 cultivated forms often much larger. — Spr. 



The Pear, a native of Europe and Asia, grows in thickets and woods and on 

 roadsides nearly throughout Florida. The reddish-brown heart-wood is close- 

 grained, heavy, and hard. (Cont.) 



2. MAIjUS [Tourn.] L. Leaf -blades simple, toothed or lobed. Cymes 

 simple. Pome depressed at both ends, the flesh without grit-cells. — Spr. 



1. M. coronaria (L.) Mill. Small tree: leaf -blades thick, shining and dark- 

 green above, dentate or often entire, narrowed at the base, 2.5-5 cm. long: 

 cymes few-flowered: pedicels 2.5-4 cm. long, slender: flowers fragrant: sepals 

 glabrous: corolla pink, mostly less than 2.5 cm. broad: styles nearly separate: 

 pome about 2.5 cm. in diameter. 



The Crab-appi-e grows in open woods and thickets in middle and western 

 Florida. The light-brown heart-wood is close-grained, heavy, and hard. (Cont.) 



3. AMELANCHIER Medic. Leaf-blades simple, toothed or rarely 



entire. Cymes simple. Pomes berry-like, globular. — Winter «&: spr. — 



Service-berry. May-cherry. — The heart-wood of the following species is 



close-grained, heavy, hard, and strong. It is brown or red-brown. 



Leaf-blades rounded or cordate at the base, glabrous, at least at maturity. 



1 . .4 . canadensis. 

 Leaf-blades narrowed at the base, permanently pubescent. 2. A. ohlongifoUa. 



1. A, canadensis (L.) Medic. Tree becoming 17 m. tall: leaf -blades rounded 

 or cordate at the base, sharply and finely serrate, sometimes sparingly pubes- 



