Clavate. Club-shaped; growing gradually thicker towards the top.
Claw. The elongated narrow base of a petal.
Cleistogamic. Producing flowers which never expand, and which are self-fertilised.
Coherent. The union of one part of an organ with other parts of the same organ, as when petals cohere to form a tubular corolla, &c.
Collateral. Placed side by side.
Column. A body formed by the union of the stamens and styles, as in orchids.
Commissure. The face by which two carpels cohere, as in the Umbelliferæ.
Complicate. Folded upon itself.
Compressed. Flattened laterally.
Concave. Hollow, as the inner surface of a saucer.
Conduplicate. Folded together lengthwise.
Confluent. Blended or running together.
Congested. Crowded together.
Conglobate. Collected into a ball or globe.
Conical. Cone-shaped; narrowed to a point from a circular base.
Connate. When related parts are united, either congenitally or by subsequent growth.
Connective. That portion of a stamen which connects the two lobes of an anther.
Connivent. Coming into contact; converging together.
Constricted. Drawn together; contracted.
Contorted. Twisted.
Contracted. Reduced in width or length.
Convex. Having a more or less rounded surface; opposed to "concave."
Convolute. Rolled together or on itself, or when one part is rolled up in another.
Cordate. Heart-shaped; applied to leaves which have the petiole at the broader and notched end.
Coriaceous. Tough, leathery.
Corolla. The inner perianth, consisting of the petals, free or united.
Corolline. (1.) Seated on or belonging to the corolla. (2.) Corolla-like or petaloid.
Corymb. A flat-topped or convex open inflorescence with a short axis, flowering from the margin inwards.
Corymbose. Arranged in corymbs or resembling a corymb.
Costa. A rib; when one only, a midrib or mid-nerve.
Costate. Ribbed; having one or more longitudinal ribs or nerves.
Cotyledon. The first leaves of the embryo—one in monocotyledons, two or rarely more in dicotyledons.
Crenate. Applled to a leaf having its margin cut into rounded notches.
Crenulate. Finely crenate.
Crested. Having an elevated ridge or appendage like the crest of a helmet.
Crisped. Curled; crumpled.
Crustaceous. Hard and brittle in texture.
Cryptogam, Cryptogamous. Plants destitute of stamens, pistils, and true seeds containing an embryo.
Cucullate. Hooded or hood-shaped.
Culm. The hollow jointed stem of grasses.
Cuneate. Wedge-shaped; triangular with the apex downwards.
Cusp. A sharp rigid point.
Cuspidate. Terminating in a cusp.
Cuticle. The outermost skin or epidermis.
Cyathiform. Shaped like a drinking-glass a little widened at the top.
Cyme. A broad and rather flat open inflorescence, flowering from the centre outwards.
