The carpels of Cycas ai 



BOTANY OF BIHAR AND ORISSA. 



-ting family Fam. 1. Cycadac 



. Stems copiously monopodially branched. Leaves s 

 acicular or scale-like, rarely lanceolate or ova 





Class II. CuNIh'LKi 



This embraces several orders and families poorly represented 

 in our area and the* Eamily. 



Fam. 2. Co 



climbers with the male and female Bporophyfls m whorls on I 

 spike with annular bracts. Around the erect ovule and out- 



fosedpenanth (see* Clara IIL Gnetine.*. 



ODly one family Fam. 3. Onetacete (p. 1234). 



SUB-DIVISION I 



furnished with a perianth. Carpels or female sporph 



that tin- elites unite or several carpels in one whorl united to one 



or "ovary." Ovules enclosed in the ovan so th . 



tion is effected by the pollen-tubes growing through a .penal > 



•stigma" or organ for reception of the pn!leii--nv' ■ 

 i i absent the stigma is sessile ; each carpel i 

 but these may become connate into one). Macro-; 



iion or pollination contain- nuclei, but no distinc 

 prothallial tissue or recognizable archegonia. The endosperm » 

 formed after fertilization. The Angiosperms contain 



These often expand 1 fts^he^rsTg^n leaves of the plant 



>■-... . .' , ■ • ■ . : : 



Holm I 



Terminalia arjuna in - 



exceptionally in manv other plants. Exceptionally 



cotyledons remain undifferentiated, e. g. Loranthus spp. 



ClaSS I. DlCOTYLEDONES (p. ^r 



B. Plants of which the embryo has only one cotyledon or seeo 

 or partially enclosed in the seed from which it absorbs thf 



