Bur. A spiny fruit.
Calyx. The outer part of a perianth, usually green in color. Page [xiii.].
Campanulate. Bell-shaped.
Capsule. A dry fruit of more than one carpel which splits at maturity to release the seeds.
Carpel. A simple pistil, or one member of a compound pistil.
Catkin. A spike of unisexual flowers, each subtended by a bract, and usually deciduous in one piece.
Chambered. Said of pith which is interrupted by hollow spaces.
Ciliate. Fringed with hairs on the margin.
Cinereous. Ash-gray color.
Claw. The narrow, stalk-like base of a petal, sepal, etc.