44 AMYGDALACEAE. 



47. C. Earlei Ashe. A shrub 1-3 m. tall. Leaf-blades cuneate or obovate, 

 or oblong-euneiform, 1-2.3 cm. long, 5-15 mm. wide, or broader on leading 

 shoots, pubescent on the loAver surface at maturity, especially along the midrib 

 and veins, either rounded or pointed at the apex, wedge-shaped at the base, 

 the borders serrate, at least above the middle; petioles 1-10 mm. long, pubes- 

 cent: corymbs 2-3-flowered, or flowers solitary: pedicels and hypanthium 

 tomentose: sepals narrow, 5-7 mm. long, serrate or entire: corolla about 15 

 mm. wide: stamens 20, the anthers nearly white: fruit pyriform, 7-9 mm. 

 wide, 8-11 mm. long: nutlets 3-5, 5-7 mm. long, the hypostyle occupying about 

 three-fourths of the ventral angle. 



On dry hills and in sandy soil, northern Florida. Also occurs in adjacent 

 Alabama. 



48. C. pyracanthoides Beadle. A shrub, or a small tree 2-5 m. tall, with ashy 

 gray or brownish smooth or scaly bark. Leaf-blades obovate, oblanceolate or 

 elliptic, 1.5-5 cm. long, 7 mm.-3 cm. wide, glabrous, acute or rounded at the 

 apex, cuneate at the base, the margins serrate above the middle; petioles 2-10 

 mm. long, margined: corymbs compound, glabrous, many-flowered: pedicels 

 and hypanthium glabrous: sepals 2.5-4 cm. long, entire or remotely serrate: 

 stamens 7-12, the anthers purplish: fruit globose or nearly so, 5-8 mm. in 

 diameter, bright red at maturity : nutlets mostly 2, 5-6 mm. long, the hypostyle 

 about half the length of the nutlet. 



On banks of the Chipola river. {Endemic.) 



Family 5. AMYGDALACEAE. Plum Family. 



Shrubs or trees, commonly with prussie acid in the tissues. Loaves 

 alternate, with free, often early deciduous stipules: blades simple, mostly 

 toothed. Flowers perfect, in corymbs, cymes, racemes, or panicles, some- 

 times clustered. Calyx of 5 sepals, borne on the edge of the hypanthium, 

 deciduous. Corolla of 5 petals. Androecium of many stamens. Gynoe- 

 cium of a single carpel, or rarely of 2 or 3 carpels. Ovary 1-celled : style 

 entire. Fruit a drupe. 



Style basal : ovules erect. ' 1. riiEYSOBALANUS. 



Stjie terminal : ovules pendulous. 



Drupe with a pulpy exocarp : leaves deciduous : flowers in 

 clusters or terminal racemes. 

 Calyx sessile or nearly so : stone coarsely wrinkled 



and pitted. 2. Amygdalus. 



Calyx manifestly pedicelled : stone neither wrinkled 

 nor grooved. 

 Flowers in corymbs from scaly buds of the branches 



of the preceding year, before the leaves. 3. TEUNrs. 



Flowers in racemes terminating branches of the 



year, after the leaves. 4. Padus. 



Drupe with a dry exocarp : leaves persistent : flowers in 



axillary racemes. 5-. Laurocerasus. 



1. CHRYSOBALANUS^L. Shrubs or trees. Leaf -blades of an orbicu- 

 lar or obovate type. Cymes axillary. Petals clawed. Filaments distinct or 

 nearly so. Stone of the fruit pointed at the base, ridged. — All year. 



Drupe globular or spheroidal : petals cuneate. 1. C. Icaco. 



Drupe obovoid or oblong-obovoid : petals spatulate. 2. C. peUocarpus. 



1. C. Icaco L. Tree sometimes 10 ni. tall or shrub, and when growing on the 

 beach, with radially creeping branches: leaf-blades broadly obovate to orbicu- 

 lar-obovate, mostly 4-8.5 cm. long, typically retuse: sepals about 2.5 mm. 

 long: drupes globose or spheroidal, 3-4 cm. long, yellow, red, or purple: stone 

 broadly obovoid, blunt-ridged. 



The CocoA-PLUM grows on sandy shores and sand-dunes and in coastal ham- 

 mocks in the southern half of peninsular Florida and the Keys. The brown or red- 

 tinged heart-wood is close-grained, heavy, hard, and strong. (TT. 7.) 



