yy.]. PLANT STUniKS 



CoTVi.EDiiN' ; tlie first leaf ilevelopeil Ijy lui emliryo spiiroiihyte. 

 Cyclic: a|i]ilie(l to an arra.iigciiiciit of leaves or floral ] .arts in wliich 



two or more appear iiiioii the axis at the same level, lonuiiit,' a 



cycle, or wlmrl, or verticil. 



Dehisceni'e: the opening- of an organ to discliarge its contents, as in 

 spormigia, pollen-sacs, capsules, etc. 



DiciiOTOMous : applied to a style of Iji'anching in which the tip of the 

 axis forks. 



Dkecious: ajmlied to plants in which the two sex-O'gans are n|)0]i dif- 

 ferent individuals. 



DoRSivENTKAL : apjilled io a l>ody whose two surfaces :ire diiferently 

 exposed, as an oi'dinary thallns or loaf. 



Ego ; the fenudc gajnetc. 



Emkryo: a plant in the earliest stages of ils development from tlie 



spore. 

 Ejihryo-sac ; the niegaspore of Spermalophytes. whicli hater c(Uitains 



the emljryo. 

 Endosperm: the nourishing tissue deY(doped within the emljryo-sac, 



and thought to i-epreseut the feuude gauu'tophyte. 

 E.XTOjiOPuiLocs : applied to flowers (jr plants winch use insects as agents 



of pollin.atiou. 

 EeuiVNors: ;ip|ilied to a flower whose (alter parts appear to arise from 



the top uf tlic ovary. 



FKiri'iLiz.YruiN : thi' union of sperm and egg. 



Fii.AMEN'r: the stalk-like part (jf a stamen. 



Foo-r : in liryophyles tlie part of the sporogonium iinhi'dded in the 



gamclophi.re : in Ptci-iilophyli's an organ uf the spurnphxle emhryo 



to absorb from the ganietopliyte. 



Ga.met.vxoic.m : the oi-gan wilhiii which giuiietcs are ]iroduced. 

 Ga.mete : a. st'Xual cell, which by nniou with another pi'cidiices a sexual 



spore. 

 GametoI'iivte : in alternation of generations, tlie gi-neralinii which 



bears the sex organs. 



Hetiorociamoos : applied (u plants whose pairing- gametes ai'e unlike. 



Heterosporois : applied I(j IIhis,. jiighrr plants whose spurophyle pro- 

 (iuci-s two forms of asexual spores. 



Iloiiosi'iuiocs : applieil tci I huse [ilants wliose spuropli\li- produces simi- 

 lar asexual spores. 



