no 



of a leaf there is found in the middle layer a single discontinued row 

 of larger cells, each separated from one another by smaller cells 

 intercepted between. They are seen to be arranged in more or less 

 parallel rows obliquely running from the axis towards the margins, 

 as it is represented in fig. 3 which shows the section cut tangentially 

 near the midrib portion. Some of these cells elongate and take 

 more or less irregular disposition. They become afterward filled 

 with brownish contents and those brown cells make the appearence 

 like veins in surface view of older fronds. The growing apex of frond 

 is invisible in a fully grown frond as the terminal portion is mostly 

 wasted off, but in a very young sporophyll we may clearly see it 

 with the apical cell horizontally articulated as it is shown in fig. 8. 



Tetrasporangia unknown. Cystocarps ovoid or ellipsoid, pro- 

 duced in the lower portion of single or rosulately arising sporophylls 

 and are shortly pedicelled having the structure exactly that of the 

 genus. Sporophylls are lanceolate with entire or toothed margins, 

 measuring 8 by 2 mm in larger ones and arise on both surfaces of 

 the frond. Colour beautiful red when recent, becoming darker in 

 drying. Subsidence thickish, rigid and curled when fresh, and the 

 plant imperfectly adheres to paper in drying. 



A distinct species related to Botryocarpa prolifera Grev., only 

 one species of the genus hitherto-known from the Cape of Good 

 Hope. 



PL. LXXXI. Frond of Botryocarpa japonica Okarn. n. sp. in 

 nat. size. 



PL. LXXXII. Fig. 1 : cross-section of the basal portion of a 

 leaf, ^. Fig. 2 : portion near the central axis in the section shown 

 in fig. I ; f, c, larger cells of the middle layer; p. Fig. 3: tan- 

 gential section of an oldyr leaf showing the arrangement of the larger 



