296 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Bracteole. Bractlet. 



Bractlet. A secondary bract, borne on the pedicel of a flower. 



Bristle. A long stiff hair or hairlike organ. 



Bulb. A leaf bud (usually subterranean"), with fleshy scales or coats. 



Bulblet. A small bulb, particularly one borne upon the stem. 



Bullate. Appearing as if blistered. 



Caducous. Falling off very soon after development. 



Callus. A hard or indurate projection; in grasses, the base of the mature floret, the 



callus being sharp and pilose in such genera as Stipa and Aristida. 

 Calyx. The outer series of perianth parts. 

 Campanulate. Bell-shaped. 

 Canescent. Hoary, with fine gray pubescence. 

 Capillary. Hairlike. 



Capitate. Borne in a head or dense cluster. 

 Capsule. A dry dehiscent fruit formed of two or more carpels. 

 Carinate. Keeled; with a more or less sharp longitudinal ridge. 

 Carpel. The modified leaf forming a simple ovary, or one member of a compound 



ovary. 

 Cartilaginous. Firm and tough; cartilage-like. 

 Caruncle. A wartlike appendage to a seed at or near the hilum. 

 Caryopsis. The dry indehiscent one-seeded fruit of grasses, in which the pericarp is 



adherent to the seed, as the grain of wheat or corn. 

 Catkin. See ament. 



Caudate. Having a slender taillike tip or terminal appendage. 

 Caulescent. Producing a stem above ground. 

 Cauline. Pertaining to the stem. 

 Cell. The cavity of an anther or ovary. 

 Cespitose. Growing in tufts; tufted. 

 Chaff. Dry bracts. 

 Chartaceous. Of papery textiu^e. 

 Chlorophyll. The green coloring matter of plants. 

 Ciliate. Fringed with hairs on the edge. 



Circumscissile. Dehiscing transversely, the top separating like a lid. 

 Claw. The greatly narrowed base of some petals. 

 Cleft. Cut about half way to the mid vein or baee. 

 Cleistogamous. Producing seed fi'om flov/ers wliich are self-fertilized in the bud, 



the floral envelope not opening. 

 Cochleate. Spiral, like a snail shell. 

 Compound. Composed of two or more like parts joined together. Compound leaf, 



one divided into separate leaflets. Compound ovary, one composed of two or more 



carpels. 

 Conduplicate. Folded lengthwise. 

 Cone. A compact series of overlapping scalelike carpels, arranged about a common 



axis. 

 Confluent. Running together; blended in one. 

 Coniferous. Cone-bearing. 



Connate. Said of similar organs more or less completely joined to each other. 

 Coralloid. Resembling coral. 



Cordate. Heart-shaped; with two rounded lobes at base. 

 Coriaceous. Of leathery texture. 

 Corm. An enlarged solid fleshy base of a stem. 

 Corolla. The inner series of perianth parts. 

 Corymb. A flat-topped or convex open flower cluster, with the pedicels arising from 



different points on the stem, the outer flowers blooming earliest. 



