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PLATE XX. 



Rhacomitrium patens, (i) Plant, Xi. (2) Capsule, X17. (3) Lid, X17. (4) Part of 

 cross section of upper portion of leaf, XSSo. (5) Leaf, X07. (6) Tip of rather blunt leaf X400. 

 (7) Cross section of upper part of leaf, X330. (8) Tip of rather pointed leaf. X400. (9) Cells 

 of leaf-middle. X400. (10) Cells of leaf-base, including the alar cells. X400. 



