BOTANIC MATERIA MEDICA, 165 
commonly known as the broad-leaved elm. 
This is one of our finest forest trees, having ob- 
long, ovate leaves, equally serrated and pubes- 
cent, with very short petioles. The flowers 
have acalyx, but no corolla; the stamens are 
five in number, and of a pale pink color, with 
two pistils; fruit, a capsule and one seeded. 
The inner bark of the Ulmus Fulva (slippery 
elm) occurs in commerce in flat pieces or strips 
of variable length and width, but about % ofan 
inch (3 millimeters) thick, of a light brown color. 
When broken, the fracture is fibrous and tough; 
a transverse section of the bark presents under 
a good magnifying glass a delicately-checkered 
appearance; odor agreeable, taste bland and 
mucilaginous; medical properties demulcent, 
and applicable in all cases of inflammation of 
the bowels and urinary organs; also used as a 
poultice when in a powdered or ground state, 
mixed with water. It is given in form of an in- 
fusion. The mucilage is the only recognized 
officinal preparation, The late Prof. Gray be- 
lieved the elm properly belonged to the natural 
order of Urticacez. 
Viburnum, Black Haw, Viburnum Pruni- 
folium.—Natural order Caprifoliaceze, commonly 
known as the arrowwood tree. Native of the 
United States, and found growing in and about 
the margin of woodlands. This shrub or small 
tree attains a height of 10 to 20 feet, having 
rich, glossy, green leaves, ovate or obvate in 
shape, with serrated edges; flowers rose color, 
and very rich in perfume; corolla wide-spread- 
ing, with five petals, which are deeply lobed; 
stamens, five; stigmas, from one to three; calyx, 
