Trans. Roy. Soc. Edin. 



Vol. XLV. 



KIDSTON AND GWVNNE— VAUGHAN : FOSSIL OSMUNDACEAE. 



Plate VI. 



DESCRIPTION OF DIAGRAMS. 



1-A representation of a portion of the xylem ring- of Osmunda Ugalis seen from without. 

 It., cut end of a departing leaf trace; lg., leaf gap., (after Lachmann). 



,.• nf t i, P X v1em rino- of Todea barbara seen from without. 

 2— A representation ot a portion ot the xylem nn & 



Lettering as above. (After Seward & Ford). 



3-12-Diagrams of transverse sections taken about the middle of the stipular leaf-bases of 

 various Os,nnndaceae showing the distribution of the sclerenchvma :-lhe eai-trace s 

 unshaded.-3, OsmuudUes Dunlo P i ; 4, Os.undues Gtbhana ; o OsnnaMes Do»kp. 

 e Osmunda rrgaSis ; 7, Todea barbara; 8, Osmunda ] avamca ; 9, Todea hymcno P hyl,oid.s , 

 10, Todea superb*; 11, Osi»i««k «*i«i«wii/«; 12, OaKW«f« Claytomana. 



