THE STONE WORTS. 



83 



/. Leaf. 



/'. Leaflets. 



/". Sterile leaflets. 



I. rt. Apical cell of leaf. 



m. Manubrium. 



inc. Micropyle. 



77. Node. 



n.a. Last formed node. 



n.c. Cortical node. 



ne. Nucleus. 



n.l>. Leaf-bearing node of pro-embryo. 



n.r. Root-bearing node of the same. 



nr. Oosphere. 



r. Primary root. 



)//. Rootlets (rhizoids). 



s.a. Segmental cell. 



re. Sap vacuole. 



1 to 5. Nodes or their appendages, 1 to 5. 



i. to v. Internodes, i. to v. 



