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colls of the the middle layer, c, c; ^-. Fig. 4: section of an uppei 

 leaf cut perpendicular to the vein like striae ; c, c, empty larger cells 

 of the middle layer which are surrounded by smaller cells fille/1 with 

 stach granules ; 1 "*. Fig. 5 : portion of a tangential section of a 

 leaf showing the elongated larger cells of the middle layer full of 

 brownish contents, ^-. Fig. 6: half of the longitudinal section of an 

 upper leaf with the axis, a, ^.^Fig. 7 : portion of the same (fig. 6); 

 a, the axis ; - 2 ---. Fig. 8. surface view of a very young leaf showing 

 the apical cell and the central axis, ? *-. Fig. 9 : tangential section 

 of a little lower portion of the sporophyll shown in fig. 8 ; a, axis ; 

 ^p. Fig. 10 : vertical longitudinal section of an older leaf to show 

 the wasting of the apical margin, -j. Fig. 11 : sporophylls bearing 

 cystocarps, i. Fig. 12 : two sporophylls (8 by 2 mm), . Fig. 13 : 

 vertical section of a cystocarp, '^. Fig. 14 : neucleus and the pla- 

 cental cell, ~. Fig. 15 : spore-filament, -^-. 



Botryocarpa Greville 1830. 



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DELESSERIEAE, DELESSERIACEAE. 

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