APPENDIX 11 



Convolute, rolled up. 



Cordate, shaped like the conventional heart (as on playing 

 cards), or with the base heart-shaped. 



Corolla, one of the envelopes of the flower and a collective 

 name for the petals. The corolla if present is usually situated 

 within the calyx, but rarely the calyx is absent. It may 

 usually be distinguished from the calyx not only by its posi- 

 tion but by its peculiar texture and colour, e.g., the red petals 

 of a rose. 



Corona, a ligular outgrowth from the corolla or petals on 

 the inside which sometimes appears like a second corolla, e.g., 

 in Pancratium and Daffodil. 



Corymb, a form of inflorescence in which the several 

 branches or flower-stalks arising at different levels reach more 

 or less the same level at the top. 



Costa, see Nervation. 



Cotyledon, a leaf present on the embryonic plant while 

 yet in the seed. The cotyledon (in Monocotyledons) or coty- 

 ledons (in Dicotyledons and Gymnosperms) in some species 

 never expand but are absorbed by the germinating plant, in 

 ether species they appear above ground as the 6rst green 

 leaves of the plant. Vide Intro., pp. 49 and 53. 



Cusp, a short hard point or tip ; sometimes also used in 

 the sense of a short pointed tip from an otherwise obtuse leaf. 



Cuspidate, furnished with a cusp; in the second sense 

 sometimes used as a short expression for abruptly acumi- 

 nate. 



Cyclic, with the parts arranged in whorls, not spirally. 



Cyme, a system of branching in which the main axis 

 ceasts to grow or terminates in a flower, the secondary or 

 lateral axes from beneath the apex continue to grow beyond 

 the parent axis and may be likewise superseded by branches or 

 axes of a higher order. Cp. raceme. 



605 



