POLYSTICHEM ANGULARE. 



139 



Phylloideum, Lowe. (Fig. 118.) — Found in Devonshire, by 

 Mr. Charles Ehvorthy, gardener to Sir Charles Trevellyn, of 

 Nettlecombe. A leafy-fronded variety. Length of frond from 

 sixteen to eighteen inches; width six inches; colour a vivid 

 but heavy green. An elegant dwarf variety, almost devoid of 

 scales, except on the main stem. Sori sparingly distributed 

 at the apex of the frond. Pinna; sub-opposite below, alternate 

 above; length three inches. Pinnules large, entire, with a 

 brief auricle; margin dentate, the lobes having several short 

 spines and one long spine. The superior basal pinnule much 

 larger than the others. This variety is very like Concinnum, 

 but is not so dentate. 



Deorso-pixnatum, Moore, {Suhquadripinnatum, Wollaston.) 

 — Found near Barnstaple, in Devonshire, by the late Mr. C. 

 Jackson. Allied to Plumosum. Differing in having the lobes 

 on the posterior side of the posterior pinnules separated into 

 distinct linear toothed pinnulets, the pinnules on the lower 

 side of the rachis being deorsely pinnate. A handsome but 

 doubtful variety. At the present time Mr. WoUaston informs 

 me that the plant has run out, yet as there is a possibility of 

 a return of the above character, I have included this variety. 



Tortile, WoUaston. — This variety has lost all its characters, 

 and is therefore excluded from this list as one of the non- 

 permanent forms. 



u 



