BOTANIC MATERIA MEDICA. 31 
Flowers of both kinds in aments or close 
heads. Leaves palmately-veined or 
lobed. Calyx 4 cleft, in the fertile flow- 
ers becoming berry-like. 
Morus in Urticacee. 
Calyx none: flowers in round heads. 
Platanacez, 
Leaves pinnately veined. Flowers dioe- 
cious, one on each scale. Pod many- 
seeded. Salicacez, 
Flowers monoecious, the fertile ones 2 
or more under each scale. Betulacez. 
Flowers, only one under each fertile 
scale. Fruit, one seeded. Myricacez. 
Sub Class 2.—Gymnosperms. Pistil repre- 
sented by an open scale or leaf, or some- 
times entirely wanting; the ovules and 
seeds naked. Flowers monoecious or dioe- 
cious; stems branched; leaves simple. 
. Coniferz. 
Crass II.—Endogenous or Monocotyledonous 
Plants. Stem not distinguishable into bark, 
wood and pith; leaves mostly parallel-veined 
and sheathing at base. Parts of the flower 
usually in threes. Embryo with a single 
cotyledon. 
1. Flowers densely crowded on a spadix, 
with or without a spathe. 
Herbs. The small and crowded flowers, 
either naked or with asmall perianth, spadix- 
with a large spathe surrounding it. Flower 
generally naked; fruit a berry. Spadix with- 
out aspathe. Perianth of 6 pieces. 
Aracez 
