AMYGDALACEAE ‘ 569 
185. Crataegus Bushii Sarg. A large shrub, or a small tree 4-7 m. tall, with a 
trunk sometimes 2-2.5 dm. in diameter covered with dark brown fissured and scaly bark. 
Leaf-blades obovate or elliptic, or on leading shoots sometimes suborbicular, 2-7 cm. long, 
1-3.5 cm. wide, glabrous or glabrate in age, either rounded or pointed at the apex, wedge- 
shaped or more abruptly contracted at the base, the margins serrate above the middle ; 
petioles 5-15 mm. long, eventually glabrous: corymbs broad, compound, glabrous, many- 
flowered : pedicels and hypanthium glabrous : sepals 4-5 mm. long, mostly entire: corolla 
2-2.5 mm. wide: stamens 20, the anthers bright rose-color: fruit oblong, 7-10 mm. long, 
s maturity green tinged with dull red, the flesh thin and firm : nutlets 2-3, about 6 mm. 
ong. 
Upland woods, Fulton, Arkansas. 
7. COTONEASTER Medic. 
Shrubs, with much branched stems. Leaves alternate, stipulate: blades simple. 
Flowers in corymb-like cymes or rarely solitary. Sepals 5, persistent. Corolla white. 
Petals 5, scarcely clawed. Stamens numerous. Ovary 2-5-celled, the carpels more or less 
distinct above : styles 2-5. Ovules 2 in each cavity or carpel, erect. Pome ovoid, globose 
or turbinate, the carpels bony at maturity. 
1. Cotoneaster Pyracántha (L.) Spach. An evergreen shrub, 1-2.5 m. tall, with 
slender spines, 1-2.5 cm. long. Leaves persistent ; blades oval or slightly oblanceolate, 
2-5 cm. long, obtuse, crenulate, glabrous, short-petioled : cymes many-flowered : pedicels 
and hypanthium pubescent : sepals ovate: corolla about 6 mm. broad: pomes depressed- 
globose, about 4 mm. high, scarlet, bitter. 
In thickets and cultivated grounds, Pennsylvania to Tennessee and Alabama. Naturalized from 
Europe and Asia. Spring. 
FAMILY 14. AMYGDALACEAE Reichenb. PLUM FAMILY. 
Shrubs or trees more or less manifestly imbued with prussie acid, with a 
smooth or flaky bark which often exudes gum. Leaves alternate, deciduous or 
persistent, with deciduous stipules: blades various, simple, leathery or mem- 
branous, mostly toothed. Flowers perfect, in clusters, corymbs or racemes. 
Calyx of 5 sepals, inferior, deciduous. Corolla of 5 distinct petals inserted on 
the hypanthium. Disk annular. Androecium of numerous stamens inserted 
with the petals. Anthers 2-celled. Gynoecium of a single carpel or rarely of 2 
or 3 carpels. Ovary 1-celled. Style simple. Stigmas truncate or peltate. 
Ovules 2, pendulous. Fruit a drupe. Seed solitary. Endosperm wanting. 
Embryo with fleshy cotyledons. 
Style basal : ovules erect. 1. CHRYSOBALANUS. 
Style terminal: ovules pendulous. 
s adit ds pulpy exoearp: leaves deciduous: flowers in clusters or terminal 
Calyx sessile or nearly so: stone coarsely wrinkled and pitted. W AMETHPRIAM 
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, PRUNUS. 
D Flowers in racemes terminating branches of the year, after the leaves. 4. PADUS. 
rupe with a dry exocarp: leaves persistent: flowers in axillary racemes. 5. LAUROCERASUS. 
1. CHRYSOBÁLANUS L. 
Shrubs or trees, with erect or underground stems. Leaves alternate: blades simple, 
leathery , often lustrous. Flowers perfect, white or greenish, in cymes, pedicelled. Hypan- 
thium campanulate or turbinate. Sepals 5, nearly equal, imbricated. Petals 5, deciduous. 
Stamens numerous, sometimes 15, inserted with the petals: filaments distinct or united at 
the base, glabrous or pubescent. Ovary inferior, 1-celled, sessile: style basal, filiform. 
Ovules 2, erect. Drupe pulpy, often edible, the stone 5-6-ridged. Seeds solitary. 
Leaf-blades several times longer than broad : inflorescence terminal : filaments and ovary glabrous. 
Leaf-blades as long as 1. C. oblongifolius. 
broad or nearly so: infl ence axill : filaments and 
Ovary pubescent, y aam — 2. C. Icaco. 
ie l. Chrysobalanus oblongifdlius Michx. A low shrub, forming wide patches by the 
i oe of underground stems, the branches erect, 1-3 dm. tall, simple or sparingly 
ranched. Leaf-blades oblanceolate to oblong, or cuneate, 3-12 cm. long, subulate-tipped, 
