Kic. 364. — Ephedra trifiirca: early development of embryo: A, unicciUilar embryo; 

 /i, the nucleus has divided ; C, embryo and suspensor; D, mode of formation of wall sepa- 

 rating embryo and suspensor; E, division of embryo initial cell; /'', embrj'o and second- 

 ary suspensor; /I, /J, C, and Tt, X50o;Z), X 1,900; F, X 250; c, embryo nucleus and em- 

 bryo cell; s, suspensor nucleus and suspensor cell; /, suspensor tube. — After LandJ^' 



