CYATHEAE 



605 



FIG. 336. 



Alsophila pruinata, Kaulf. Transverse sections ot stem, leaf-bases, and bud (a) in 

 Kiss. -) and 4 ; it is apparent that the axis is solenostelic, that the solenostele opens at 

 the exit of each leaf, and that the leaf-tract is a continuous horse-shoe at its base. (After 

 H. Karsten.) 



m 



FlG. : 7 !. 



Cyathca Imrayana, Hook. ^ =axile longitudinal section. Natural size. Tin- 

 was about 3 mm. thick, and semi-transparent. I hi bl icl i nl.u- 

 Is drawn as superficUl do not all lit exactly in the same plane. (I = vascular Si 



of the main cylinder; j= outer ; J*= inner pjates of ii -\\> atli ; internally ti. A . i- 



the pith with its medullary strands, outside s, the cortex with cortical Mi.uids; r = 

 cortical bundles ; b = leaf-scars ; W = strands passing int.. leaves; ; = insertions of roots ; 

 = a foliar strand running into the pith ; above .1 a blind ending of a medullary bundle. 

 (After De Bary, from Engler and Prantl, \at. rjJan^nfum.) 



