Erricacce —Leduim. 287 
10. LEDUM. 
Small shrubs with evergreen revolute bullate leaves rusty- 
tomentose beneath and terminal clusters of small white or 
pinkish flowers. This genus is distinguished by having a 
corolla of 5 separate petals and 5 stamens. The few species 
known are found in. swampy bogs of Europe, Asia, and 
North America. 
1. LZ. palistre.—This is the common European species, 
growing from 2 to 3 feet high. Leaves distant, narrow, revo- 
lute, distinctly petiolate. 
2. L. latifilium.—An American plant very similar to No. 1, 
but the leaves are oval or oblong, and scarcely recurved at the 
margin, and the flowers are more numerous. Both bloom in 
Spring. 
Orper LXIV._STYRACACE. 
Shrubs or trees having simple alternate usually toothed 
exstipulate leaves and regular hermaphrodite flowers. Calyx 
free or adherent to the ovary. Corolla of 4 to 8 more or less 
united petals, often differing in number from the calyx-lobes. 
Stamens double the number of the corolla-lobes or frequently 
more. Fruit drupaceous, or dry and winged, included in the 
calyx-Lube or inferior, 1- to 5-celled; cells usually 1-seeded ; 
seeds albuminous. A small group of about six genera and up- 
wards of a hundred species, best known in gardens by the 
Snowdrop trees. The majority of the species are from the 
tropics of America and Asia. 
1. HALESIA. 
Deciduous shrubs or small trees with petiolate venose leaves 
and pure white flowers on slender drooping pedicels, solitary or 
in small clusters from the buds of the preceding year. Calyx- 
tube adherent to the ovary, surmounted by 4 small teeth. 
Petals 4, united to about the middle in a bell-shaped corolla. 
Stamens 8 to 16, united in a ring at the base of the corolla. 
Fruit dry, 2- to 4-winged, with 1 to 4 bony 1-seeded cells. 
There are only three or four species, all limited to North 
America. This genus commemorates the celebrated Dr. Hales, 
author of ‘ Vegetable Statics,’ ete. 
