MONOECIA, 
PENTANDRIA. 
281 
URTICA. Flowers jnale and female on the same, 
rarely on distinct plants. 
JVI. Cal. 4 leaves. Nectary central ; glass-shaped, 
F. Cal. 2 valves. Seed 1, glossy. 
BETULA. Masc. Cal. amenti squama monophylla, 
trifida, triflora. Cor. quadripartita, 
Fasm. Cal. amenti squama monophylla, subtrifida, bi¬ 
flora. Styli 2. Semina compressa. 
BETULA. Flowers male and female on the same 
plants Cal. ^-cleft, Bloss. with 4 divisions, 
M. Cal. containing ^foxuers. 
F. Cal. containing 2 fowers. Seeds with a ineinbra- 
naceous border on each side. 
PENTANDRIA. 
Stamina 5. 
BRYONIA. Masc. Cal. quinquedcntatus. Cor. 
quinqueflda. Filamen. 3. Anth. g. 
Faem. quinquedcntatus. quinqueflda. Sfyl: 
trifidus; infera, polyspei'ma, 
BRYQNIA. Sta?n. and pistil in separate fowers. 
Bloss. with g divisions. . ^ ^ 
Fern. Style o^-cleft. Berry somewhat globular, with 
many seeds. \ 
B b‘3 ' ■ 
