EUPTEEIS AQUILINA. 



31 



absolute absence of any other analogous part to which, wii,h 

 any show of plausibility, it can possibly be referred. 



I have stated that the margins of each lobe are convolute, so 

 that the marginal vein and its accompanying membranes, toge- 

 ther with the series of intervening capsules, are bent over towards 

 the midvein, presenting an appearance 

 which I have attempted to represent in 

 the accompanying figure of the under sur- 

 face of the apex of a lobe : h h is the mar- 

 ginal vein in its natural position ; c c, the 

 inflexed or convolute portion of the leaf ; 

 d d the superior membrane partially co- 

 vering the capsules, which are shown at 

 c e, projecting from beneath it ; / is the 

 midvein of the lobe. The inferior mem- 

 brane, although very similar to the supe- 

 rior, has some points of difference ; each 

 consists of a disk divided into cells, and a marginal fringe of 

 jointed hairs or capillary segments, but the disk is somewhat 

 differently marked. Mr. Jenner has ta- 

 ken great pains to obtain a view of both 

 the membranes at once, and has favoured 

 me with the annexed sketch, the accuracy 

 of which I have tested by examination. 

 The marginal vein of the lobe is supposed 

 to be presented to view edgeways at g, the 

 capsules having been removed, in order ' ^ '' 



to leave the view of the membranes unobstructedj h represents 

 the superior, and i the inferior membrane. 



Varieties. 



Mr. Moore has most obligingly presented me with two speci- 

 mens of this fern which he considers varieties, and to which he 

 has assigned names and definitions, as under : — 



" a. vera ; pinnules for the most part pinnatiiid, or sinuate, 



the segments oblong obtuse. 

 " (3. mtegeriima ; pinnules almost all entire, one or two basal 

 ones sometimes very slightly lobed." 



