41 6 PHARMACEUTICAL BOTANY 
Coro'na. —A crown like appendage in the throat of the corolla, as in the flowers 
of Narcissus and Silene. 
Cor'tex. —That region in dicotyl and gymnosperm roots of primary growth and 
in roots and stems of monocotyledons between epidermis and endodermis, 
in dicotyl and gymnosperm roo^s of secondary growth or in barks between 
cork cambium and phloem. 
Cor'ymb. —A flat topped or convex centripetal inflorescence with the lowermost 
pedicels the longest. 
Cos'ta. —A rib. 
Cotyle'don. —A seed-leaf of the embryo. 
Crem'ocarp. —The peculiar fruit of Umbelliferce, consisting of two inferior akenes 
(mericarps) separated from each other by a carpophore. 
Cre'nate. —Applied to leaf margins having rounded teeth. 
Cren'ulate. —The margin with fine rounded teeth. 
Crib'riform. —Sieve like. 
Cru'ciform. —Applied to the corolla or the calyx of flowers, the parts of which are 
arranged in the form of a cross. 
Crusta'ceous. —Applied to the thallus of a lichen that closely adheres to the 
substratum. 
Cryp'togam.— A plant belonging to one of the divisions of the vegetable kingdom 
below the Spermatophytes. 
Crys'talloid. —A protein body found in the aleurone grains of seeds or under¬ 
ground parts. 
Culm. —A jointed stem of a grass or sedge. 
Cu'neate. —W edge-sha ped. 
Cu'pule. —Applied to the concave involucre enclosing the glans of an acorn but 
also to other cup shaped parts of plants. 
Cu'ticle. —A thin covering of a waxy substance called cutin on the outer wall of 
epidermal cells. 
Cus'pidate. —Tipped with a sharp rigid point. 
Cyme. —A more or less flat topped determinate inflorescence. 
Cy'mose. —Cyme-like. . 
Cytol'ogy. —The study of cells and their contents. 
Cy'toplasm. —The cell protoplasm outside of the nucleus. 
Decan'drous. —Having ten stamens. 
Decid'uous. —Applied to leaves which fall in autumn, to plants bearing such 
leaves and to the calyx and corolla which fall shortly after blossoming before 
the development of the fruit. 
Dec'linate. —Curved or bent downward. 
Decompound'. —Several times compounded, as the leaf-blades of Cimicifuga. 
Decum'bent. —Erect at base, then lying on the ground, with the end rising. 
Decus'sate. —Applied to opposite leaves when the pairs stand at right angles 
to each other along the stem. 
