358 American Midland Naturalist Monograph No. 7 



Clasping (leaf). With the base partly or completely surrounding the stem. 



Clavate. Club-shaped; gradually thickened upward. 



Claw. The narowed base of the petals of some flowers. 



Cleistogamous (flowers). Small, closed, self-pollinated flowers, as in some 



violets and other plants; they are often underground. 

 Climbing. Said of plants that ascend by means of tendrils, or by twining the 



stem or petiole around a support, or sometimes by other means. 

 Coma. The hairs at the end of some seeds, as in Epilobhim, or Asclepias. 

 Complete (leaf). One consisting of blade, petiole, and stipules. 

 Compound (leaf). One composed of two or more leaflets on a common 



petiole or rachis. 

 CoNCOLORED. Of One color throughout; not variegated. 

 CoNDUPLiCATE. Folded together lengthwise. 

 Connate. Similar parts fused together, e.g., a pair of leaves united by their 



bases. 

 Convolute. Rolled up longitudinally. 

 Cordate. Heart-shaped. 

 Coriaceous. Leathery. 



CoRM. A short, erect, often globose underground stem. 

 Cormose. Resembling a corm. 



Corolla. The inner cycle of the perianth, composed of petals. 

 Corona. A structure occurring in some flowers between the corolla and the 



stamens, as in Narcissus, and in Asclepias. 

 Corymb. A flat-topped or convex indeterminate inflorescence with the pedicels 



arising from diflferent points on the axis, the outer flowers opening first. 

 Corymbose (corymbiform). Like a corymb. 

 Creeping (stem). Growing along the surface of the ground and rooting from 



the nodes. 

 Crenate. Toothed with rounded shallow teeth. 

 Crenulate. Finely crenate. 

 Cucullate. Hooded, or hood-shaped. 

 CuLTiGEN. A plant or taxon known only in cultivation. 

 Cuneate. Wedge-shaped; broad at one end and tapering to a point at the 



other. 

 Cuspidate. Sharp-pointed; ending in a sharp point or cusp. 

 Cyathium. The specialized inflorescence of Euphorbia, consisting of a cup- 

 like involucre bearing the flowers within. 

 Cyme. A convex or flat flower-cluster of the determinate type, the central 



flowers opening first. 

 Cymose. Arranged in cymes; cyme-like. 



Deciduous. Falling ofT at maturity, or at the end of the season. 

 Declined. Bent downward or aside; applied to stamens or style when turned 



to one side of the flower. 

 Decompound. More than once compound. 

 Decumbent (stem). Reclining, but with apex ascending. 

 Decurrent (leaf). Extending down the stem below the insertion. 

 Deflexed. Deflected, or turned abruptly downward. 

 Dehiscent. Splitting open along definite lines at maturity. 

 Deltoid. Triangular, shaped like the Greek letter A, as in the leaves of 



species of poplar. 



