1588 A TEXTBOOK OF THEORETICAL BOTANY 





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D 



Fig. 1447. — Zen mais. Germination: monocotyledon, 

 hypogeal, endospermic. 



Fig. 1448. — Aponogeton distachyum. Germination: mono- 

 cotyledon, hypogeal, non-endospermic. i. The empty 

 fruit. 2, The embryo. 3 and 4, Young seedlings, c is the 

 cotyledon in each case. (From Wettstein, "Handbiich der 

 Systematiscfieii Botauik" .) 



