Cytogenesis 



OF BOTANICAL TERMS. 



Decursive 



clear-spindle and asters. (Car- ! 

 noy.) Compare Stenosis. 



9YT06EN'ESIS, cell-formation. 



CYTOL'OGY, the science of cells. 



§Y'TOPLA§M, the protoplasm in 

 a cell outside the nucleus. It 

 excludes granules of protein, 

 starch, etc. Compare Nucleo- 

 plasm. 



DARWINIAN CfjR'VAltJRE, the 



curvature of the growing apex 

 of a root away from any source 

 of irritation, placed upon one 

 side near the tip. It is the 

 irritability which causes this 

 curvature that enables grow- 

 ing roots to pass around ob- 

 stacles in the soil. 



DAUGHTER-CELL, any cell when 

 mentioned in relation to the one 

 from which it was derived. 

 Compare Mother-Cell. 



DAUGHTER-SPORE, a spore pro- 

 duced directly from another, 

 or upon a promycelium. 



DAUGHTER-STAR, one of the 

 groups of chromatic filaments 

 at the poles of a dividing nu- 

 cleus. The two polar figures 

 together with the connecting 

 spindle-fibres are called a Dy- 

 aster. 



DEAL'BATE, appearing as if 

 whitewashed; covered with a 

 very white bloom or powder. 



dEcAGYN'IAN, see Decagynous. 



DECAG'YNOUS, having ten pistils 

 or styles; decagyniau. 



DECAM'EROtTS, having the parts 

 in tens, as ten floral organs in 

 a whorl. Also written 10- 

 merous. 



DECAN'DRiAN, see Decan- 

 drous. 



DECAN'DROUS, having ten sta- 

 mens; decaudriau. 



51 



DflcAPET'ALOUS, having ten 

 petals. 



DECAPHYL'LOUS, having ten 

 leaves, as a decaphyllous peri- 

 anth. 



DECEMDEN'TATE, having ten 

 teeth or tooth-like processes. 



DECEM'PID, ten-cleft. 



DECfiMLOC'ULAR, having ten 

 loculi or cells in an ovary. 



DECID'UOUS, falling at the usual 

 time, or at the close of the 

 season. Applied to leaves 

 which fall in autumn after 

 one season's growth, and to 

 plants which bear such leaves. 

 Also applied to petals which 

 fall immediately after blossom- 

 ing. Compare Caducous, 

 Marcescent, Persistent, 

 and Evergreen. 



DECLINATE, bent or curved 

 downward: declining; de- 

 clined. Applied to stamens 

 it means curved to one side, 

 neither outward nor inward 

 nor erect. Compare Recur- 

 ved, Reflexed, Reclinate. 



DECLINED', see Declinate. 



DECLI'NOUS, see Declinate. 



DECOMPOUND', twice compouud, 

 as a compound leaf whose 

 parts are compound. See 



SUPRADECOMPOUND. 



DECREAS'lNGLY - PiN'NATE, 



having the leaflets of a pinnate 

 leaf gradually smaller in size 

 from base to apex. 



DECUMBENT, erect at the base, 

 then prostrate, with the end 

 rising. 



DECUR'RENT, prolonged and 

 attached below the main point 

 of insertion, as the leaves of 

 thistles; decursive. The stems 

 in such cases are often called 

 Winged. Compare Surcur- 

 rent. 



DECUR'SIVE, see Decurrent. 



