FLORA OF THE DISTRICT OF COLUMBIA. 297 



Corymbose. Borne in a corymb; corymb-like. 



Cotyledon. A rudimentary leaf of the embryo within the seed. 



Creeping. Extending along or just below the surface of the ground and rooting. 



Cremate. Scalloped; with rounded teeth. 



Crenulate. Minutely crenate. 



Crested. Provided with a raised crestlike appendage. 



Crisped. Ruffled, as if having an excess of leaf tissue. 



Crown. An inner appendage to a petal or to the throat of a corolla; the perennial 

 portion of a herbaceous plant above the root; a low cuplike border terminating an 

 achene or other organ. 



Cucullate. Hoodlike, or provided with a hood. 



Culm. The flowering stem of sedges and grasses. 



Cuncate. Wedge-shaped. 



Cuspidate. Tipped with a cusp or sharp si iff point. 



Cyme. A flat-topped or convex flower cluster, the central flowers blooming earliest. 



Cymose. Arranged in cymes; cymelike. 



Deciduous. Falling away; not evergreen. 



Decompound. More than once compound. 



Decumbent. Reclining, but with the end ascending (applied to stems and branches). 



Decurrent. Extending down upon another part and adhering to it below the point 

 of attachment. 



Definite. Of a constant number. 



Defiexed. Bent or directed abruptly downward. 



Dehiscent. Opening by valves, slits, etc., to discharge the contents. 



Deltoid. Broadly triangular, like the Greek letter A. 



Dentate. Toothed, the teeth commonly acutish, nearly equal-sided, and projecting 

 at a right angle. 



Denticulate. Minutely dentate. 



Depressed. Flattened from above. 



Diadelphous. The stamens combined in two sets. 



Dichotomous. Forked regularly into two nearly equal branches. 



Dicotyledonous. Having two cotyledons. 



Diffuse. Loosely spreading, the branches usually numerous. 



Digitate. Compound, the similar parts radiating from a common point; also said of 

 the spikes or spikelike racemes of grasses when approximate by the shortening of 

 the rachis at the summit of the culm. 



Dimorphous. Occurring in two forms. 



Dioecious. Unisexual, the staminate and the pistillate flowers borne on different indi- 

 viduals. 



Discoid. Disklike, or lacking ray flowers. 



Disk. An enlargement of the receptacle of a flower around the base of the pistil; 

 also, the head of tubular flowers in Asteraceae, etc. 



Dissected. Cut or finely divided into numerous lobes or segments. 



Distichous. Arranged in two rows, more especially when this arrangement is con- 

 spicuous. 



Distinct. Separate from each other; evident. 



Divaricate. Diverging at a wide angle. 



Divided. Lobed to the base or midvein. 



Dorsal. Borne upon or relating to the back or outer surface of an organ. 



Drupe. A fleshy or pulpy fruit, the inner portion of the pericarp hard and stony. 



Echinatr. Beset with prickles. 



Ellipsoid. A solid body, elliptic in lengthwise section. 



Elliptic. With the outline of an ellipse; narrowly oval. 



Emarginate. Shallowly notched at the end . 



