522 PRACTICAL BOTANY 



Chalaza. The base of an ovule where integuments and nucellus are 

 one common tissue. 



Chlorophyll (green leaf). The green coloring matter of plants. 



Chloroplast. One of the special bodies that contain chlorophyll. 



Choripetalous (separate petals). With the petals separate, not united. 



Chromatophore (color-bearing). A general term for all bodies in 

 plants containing coloring matter. 



Cilium (eyelash) ; pi. cilia. Marginal hairs ; motile protoplasmic fila- 

 ments, as those of sperms. 



Cleistogamous. "\^'ith close fertilization, occurring in flowers before 

 they open. 



Closed bundle. A flbrovasoular bundle containing no cambium ; growth 

 is closed. 



Coenocyte. A number of nucleated masses of cytoplasm (cells) in- 

 closed by a common wall. 



Collateral (sides together). Side by side, as in a flbrovascular bundle 

 in which the xylem and phloem are side by side in a radial direction. 



Columella (a small column). The persistent axis of certain spore 

 cases, as in mosses. 



Concentric (center together). Technically used of a flbrovascular 

 bundle whose tissues are arranged so as to surround one another. 



Conidiophore (conidium-bearer). Stalk upon which conidia are borne. 



Conidium ; pi. conidia. The asexual spore of some fungi, as in potato 

 blight and grape mildew. 



Conjugation (joined together). The sexual union of similar gametes. 



Connate. Applied to leaves that appear united or grown together 

 at their bases. 



Connective. The portion of the stamen connecting the parts of 

 the anther. 



Cordate. Heartshaped. 



Corm. The fleshy stem or base of a stem ; a bulb-like structure, as 

 on the underground part of jack-in-the-pulpit. 



Corolla (a small crown). The inner envelope of a flower within the 

 calyx, composed of petals. 



Cortex. Hind or bark. 



Cortical. Relating to cortex. 

 -Cotyledon. A primary embryo leaf borne by the hypoootyl (oaulicle) 

 of the embryo plant. 



Cryptogams (hidden marriage). A term used to include thallophytes, 

 bryophytes, and pteridophytes. 



Cupule (a little cup). The gemma cup of liverworts. 



Cuticle (skin). The outermost layer of epidermis, differing chemically 

 from the remainder of the cell wall. 



