MONOCOTYLEDONS. 17 
the stamens. Seeds with copious albu- 
men. Veins of the leaves springing 
from the midrib. . Seitaminece. 
36 (a) Ovary 1-celled (sometimes incompletely 
6-celled). 37. 
(6) Ovary 3-celled. 40, 
37 (a) Flowers in spadices. Perianth-segments 
4 or many. Stigmas 1 or 4. Leaves 
stalked, fan-shaped, plaited in the bud. 
Flowers moncecious. Perianth her- 
baceous. Seeds albuminous. Tropical 
America. Cyclanthaceae. 
(6) Flowers solitary, cymose, or umbellate. 
Perianth-segments 3 or 6. Stigmas 3, 
6, or more. 38. 
38 (a) Aquatic plants. Flowers unisexual or 
polygamous, very rarely hermaphrodite, 
in the latter case styles 6. Perianth- 
segments usually distinctly separated in 
sepals and petals. Branches of the style 
long and narrow. Green, leafy plants. 
Flowers solitary or cymose, with a spathe 
of 1 or 2 leaves. Seeds exalbumin- 
ous. Hydrocharideae. 
(b) Terrestrial plants. Flowers hermaphrodite. 
Styles 1-3. Perianth-segments nearly 
equal, all more or less petaloid. Branches 
B 
