2fi8 



PLANT STUDIES 



habit is called partJienogencsis^ which means reproduction 

 by an egg without fertilization. 



(. l\^ \ ( niniuon w;itrr inoiild {Sapi'ohrfin.a): A, a fly from 

 IIK ills of tilt parasite are ^riiwinix; ]>. rip r>f a Itrancll or^^ani 

 f, sporangium discharging biciliate zoospores: 7^, oogoninii 

 contact, the tube having penetrated to the egg; Ii and F, 

 eggs.— ,1-6' after TmrKET, /(-/.'after DeBauy. 



wlii 

 zed ; 



myei 

 a s|„a- 

 udlier 

 a will 



fila- 

 angiiun; 

 idinm nr 

 I s^'xeral 



ISl. Mucor. — One of the most common of the Mucors, or 

 "black moulds," foi-ms wliitc furi-y growths on damp bread, 

 preserved fridts, manure liea.ps, etc. It is thertd'orc a 

 Ka,prop]iyte, the ctenocytic uiycelium lii'aiichiug extensively 

 tlircnigh the substratum (Mg. 234). 



