1 6 HiCKLING, Anatomy of Calauiostachys Binneyana. 



EXPLANATION OF PLATE. 



Photo, i. — T.S. axis of cone just above sporangiophores with 

 tissues complete, x 32 dias. 



/jv-.f:. = protoxylem ("carinal") canal. 

 i.e. = inner cortex. 

 The two small protoxylem canals are very sharply 

 defined. Manchr. Mus. Coll., R. 801 A. 

 Photo. 2. — L.S. cone with well preserved medulla. Section 

 nearly median. x 18 dias. 



nod. /«^^/. = nodal medullary tissue. 

 /;/. iiied. =internodal medullary tissue. 

 The contrast between the medulla at the level of the 

 bracts (''nodal') and that at the level of the sporangio- 

 phores ("internodal") is very well-marked. "Cash" 

 Coll., Manchr. Museum, Q. 295. 



Photo. 3. — T.S., slightly oblique, just below sporangiophores on 

 right, slightly lower on left. x 32 dias. 



Sp //-. =sporangiophore trace. 

 'Jlie traces project more strongly from the ste'e as the 

 plane of the section rises towards the sporangiophores. 

 Manchr. Mus. Coll., R. 139. 



Pnoro. 4. — Section photographed by reflected light from a solid 

 block of material. This is one of a series of 22 sections 

 of the same cone, the entire series covering about two 

 internodes. The set was obtained by slowly grinding 

 down the block and photographing at intervals. The 

 one here reproduced is next but one in the series above 

 that from which Fig. 2 c is drawn. It is introduced only 

 to illustrate the method. x 15 dias. 



Photo. 5. — Section of stele just above node, x 80 dias. 



Sp. px. c. = Protoxylem canal of sporangiophore 

 trace. 

 The two examples marked seem fairly definite ; indica- 

 tions of similar canals are seen in one or two other 

 places. Manchr. Mus. Coll., R. 139. 



