SYNOPSIS OF THE GENERA. 
Criass 22. Droecia. 
(Stamens and Pistils in separate flowers and on dif- 
ferent plants). 
(Monaypria, 1 Stamen, For some Salices see ORDER 2.) 
OrpvER I. Dianpria.—Stamens | to 5, mostly 2). 
1. Sa’Lrx, [Page 1227.] Fowers in catkins, the scales imbri- 
cated, and a gland surrounds the stamens and ovary. 
Barren flowers with from two to five stamens, sometimes 
the anthers are united. Fertile flowers with two stigmas. 
Fruit a one celled follicle, with a gland at the base. 
Seeds covered with down. Radicle inferior. 
OrpDER IJ. TrianpriaA.—3 Stamens. 
2. Empe'trum, [Page 1276.] Flowers with the perianth of 
numerous imbricated scales, the inner ones often regular, 
spreading, and petaloid. Barren flowers with three sfa- 
mens, the filaments long. Fertile flowers with a peltate 
stigma, in numerous rays. J’ruit a superior globose 
berry, with six to nine seeds. 
3. Rus’cus, [Page 1277.] Perianth single, of six pieces on 
the back of the leaves, generally expanding. Barren 
” Slower with the filaments combined at the base. Anthers 
three to six. Fertile flower with a single style and 
stigma. WNectary tubular. Fruit a globose three celled 
berry, each cell two seeded. 
(See Valeriana dioica in Ciass 3. Some Salices in ORDER 1.) 
OrvER III. TrtTranpria.—4 Stamens. 
4, Yis'cum, [Page 1278.] Calyx obsolete. Barren flowers 
with four ovate fleshy petals, united at the base, each 
bearing about its middle a sessile anther. Fertile flower 
with four erect small ovate petals. Stigma sessile. Fruit 
an inferior one seeded berry. 
5. Hippo'pu#, [Page 1280.] Barren flowers collected into a 
small kind of catkin, each scale bearing a flower. Peri- 
anth tubular, bifid at the apex, closed. Anthers linear, 
sessile, two celled. Fertile flowers solitary, perianth 
