istent calyx, forming a 1- to 3-seeded nut.

[Illustration: S. Americana.]

1. =Styrax Americana=, Lam. (AMERICAN STORAX.) Shrub or small tree (4
to 10 ft.), with oblong, alternate leaves acute at both ends, 1 to 3
inches long, smooth or very nearly so; fruit 1/2 in. long, in racemes of
3-4. Wild along streams, Virginia and south; occasionally cultivated,
and probably hardy throughout.

[Illustration: S. Japonica.]

2. =Styrax Japonica=, Sieb. (JAPAN STORAX.) Leaves alternate,
membranaceous, ovate to ovate-lanceolate, serrate or crenate, 1/2 to 3
in. long, smooth or with short stellate hairs; flowers and fruit in long
racemes. A beautiful low tree, 6 to 12 ft. high; from Japan. Hardy as
far north as Philadelphia, but needing a little protection in
Massachusetts and Missouri.

GENUS =57. PTEROSTYRAX.=

Similar to Styrax, but with the fruit in panicles, 5-winged, conical,
and crowned with the persistent base of the style.

[Illustration: P. corymbosum.]

=Pterostyrax corymbosum=, Sieb. Leaves deciduous, 2 to 5 in. long,
feather-veined, petioled, ovate, rarely cordate at base, sharply
serrate, with stellate hairs. Shrub or small tree, 10 to 12 ft. high,
cultivated from Japan; with ashy-gray bark, and white flowers turning
yellowish or purplish with age; blooming in May, fruit ripe in August.
Not perfectly hardy in Massachusetts.

GENUS =58. HALESIA.=

Small trees or shrubs with alternate, simple, deciduous, serrate leaves.
Flowers large, 1 in. long, conspicuous, white, hanging, bell-shaped,
monopetalous, 4-lobed; blooming in spring. Fruit with a single, rough,
elongated, bony nut surrounded by a 2- to 4-winged coat; ripe in autumn.

Wood light-colored, very hard and fine-grained.

[Illustration: H. diptera.]

1. =Halesia diptera, L.= (TWO-WINGED SILVERBELL TREE.) Leaves large (4
to 5 in. long), ovate, acute, serrate, softly pubescent. Fruit with 2
conspicuous, broad wings, sometimes with 2 intermediate narrow ridges. A
small tree or a large shrub, wild in the south, and cultivated as far
north as New York City.

[Illustration: H. tetraptera.]

2. =Halesia tetraptera, L.= (FOUR-WINGED SILVERBELL TREE.) Leaves
smaller (2 to 4 in.), oblong-ovate, finely serrate. Fruit smaller, with
4 nearly equal wings. A small, beautiful tree, 10 to 30 ft. high, more
hardy than Halesia diptera, and therefore cultivated occasionally
throughout. Wild in Virginia and south.

GENUS =59. SYMPLOCOS.=

Shrubs or small t