Plate A 



(I) 



(2) 



(0 



Fig. I. Pcloric form «-)t OilIus purpurea^ the lip rc\enc*.l i" .i pcul, CJiallcs-lcs 

 Eaux, Saviiic. 



Fig. 3. Mycorrhiza in root-CL-lls of i;/)/7)o»o/; a/)A)//w//. (190/1.) 



1 iL!. .;. I'h.i^Ls ot cc11-l1i\ ibioji lioiii i.M,i.-u|t ' >i . Mtuif'i t\pu L. [\) Spireme; 

 nucleus forming a thread. (2) Aletaphase; thread divides into chromosomes. 

 (3) Early anaphase ; chromosomes split into halves. (4) Anaphase ; halves 

 assemble in two sets. (5) Telcphase ; halves re-form a thread, new cell- 

 wall appears. (6) Division completed. (440/1.) 



Fig. 4. Column oi Cypripediiiiii calaoliis. (2-5/1.) 



Fig. 5. Epipadis latifolia, front and side views of column. {2-5 i.) I'ig. 6. F.pipaclis leptochiia, front and side views of column. (4, i.) 



.\bovc stereogmrhs rtproduci-d by tlit kind permission of I lirr V . Pkitfcr-Wc-llliclm of Vienna. 



