(38 ) 
D. Floral parts incomplete, inferior. 
1. 
Direa.-—Perigonium campanulate. Limb 
obliquely truncate. Style subterminal. 
Fruit a drupe. Shrub. 
Polygonum.—Perigonium 4-5 sepalous, 
persistent. Stigmas 2-3. Fruit an 
akene, enclosed in the persistent peri- 
gonium. 
Aczena.—Calyx tube contracted at the 
throat, angular, the angles armed with 
glochidate prickles. Stigma penicillate. 
Akene enclosed in the calyx-tube. 
IL Digynia and Trigynia. 
1, 
Polygonum.—Perigonium 4-5 sepalous, 
persistent. Fruit an akene enclosed 
in the perigonium. 
III. Tetragynia, 
1. 
2. 
Anemopsis.—Spadix with a _ several 
leaved involucre. Perigonium 0. Ovar- 
ies immersed in the rachis, 1-celled o - 
ovuled. 
ENNEANDRIA. 
Oreodaphne.—Anthers with valvular de- 
hiscence. Fruita drupe resting on an 
enlarged thalamus. Tree. 
Eriogonum—.Involucre #-flowered, cam- 
panulate, 6-dentate. Styles 3. Fruit 
an akene. : 
