ADDISONIA 
(Plate 15) 
CLERODENDRON TRICHOTOMUM 
Japanese Clerodendron 
Native of Japan 
Family VERBENACEAE VERVAIN Family 
Clerodendron trichotomum Thunb. Fl. Jap. 256. 1784. 
Clerodendron serotinum Carr. Rey. Hort. 1867: 351. 1867. 
inches long, two to three inches wide, ovate, wedge-shaped or heart- 
shaped at the base, gradually long-pointed at the apex. The divi- 
sions of the flower-cluster are woolly, the pedicels slender, one quarter 
to a half inch long. The calyx is five-angled, about one half inch 
beyond the mouth of the tube. The fruit is bright blue. 
Although this plant, in the vicinity of New York, is sometimes 
killed to the ground in severe winters, it readily recovers, breaking 
from the roots quite vigorously. Flowering in September and 
October, a time when there are few shrubs in blossom, it is a valuable 
addition to any collection of woody plants. The old-rose calyx 
forms a pleasing contrast with the white corolla, the combination 
being quite unusual. South of the latitude of New York it should 
prove entirely hardy. In the fruticetum of the New York Botanical 
Garden there are two specimens of this plant which have been in 
the collections since 1900. 
There are few woody genera of the vervain family which are hardy 
in the latitude of New York City, this and three others, Vitex, one 
species of which is figured at plate 18 of this work, Callicarpa, and 
Caryopteris. Clerodendron comprises about one hundred species, 
distributed for the most part in tropical and warm temperate regions. 
Those in cultivation are mainly shrubs; a few are woody vines, one 
of these, Clerodendron Thomsonae, being a popular greenhouse plant. 
The species here under consideration is the only one which will 
endure the climate of New York. 
GrorGE V. Nasu. 
