18 ADDISONIA 
two Peruvian, and one in Paraguay and Argentina; two inhabit 
southeastern Asia and one is South African. 
The button-bush is a shrub from three to — feet high, rarely 
sige ea a tree up to twenty feet high (Jour. N. Y. Bot. Gard. 1: 
54) with a trunk about six inches in diameter, a dark brown bark 
Sl es low ridges; the = are irregularly opposite or 
whorled, the twigs slender, and smooth or somewhat hairy. The 
leaves are thin, opposite or ehored: Seats to oval, entire-margined, 
smooth or somewhat hai iry, from three to six inches in length and 
from one inch to about two and one-half inches wide; they are 
pointed at the tip, narrowed or rounded at the base and have a 
stalk less than an inch long. The small white flowers, which 
na Pe in late spring in the south and in summer in the north, are 
born —_ e round stalked see about an inch in diameter, 
long, with four pointed lobes; the four short stamens are borne on 
the corolla-throat; the ovary is two-celled, with a single ovule in 
each cavity and is tipped by a neat style which projects 
much beyond the corolla; the stigma is small ded. The 
fruits are small, dry, hard, sepicaaidat containing one or two 
seeds with narrow cotyledons. 
N. L. BrIrron. 
EXPLANATION OF PLATE. Fig. 1.—Flowering branch. Fig. 2.—Flower, X 2. 
Fig. 3.—Fruit, X 2 
