Cinchona micrantha.
Cleistogamic flowers. list of genera. on their origin.
Cnicus acaulis. — palustris.
Coccocypselum. pollen-grains of.
Coprosma.
Cordia. pistil of.
Corolla, difference in size in the sexes of the same species.
Corydalis.
Corylus avellana.
Cowslip, the common. short- and long-styled.