186 POLYSTICHUM ANGULARE. 



as a single pinnule. Some pinnas ascending, others horizontal. Pinnules 

 varying considerably in size and form; in some pinnae they are triangular, 

 with a cuneate base, scarcely auricular, two-spined, and uncut, except 

 the serrated edges; in others strongly auricular and deeply cut, biserrate, 

 and many-spined. Some pinnae have a lengthy sub-tripinnate superior 

 basal pinnule, whilst in other pinnae the superior basal pinnule does 

 not differ from the rest. In the upper half of the frond especially the 

 spines all incline in one direction, in consequence of which one half of 

 the spines lie on the leafy portion of the pinnule, giving the appearance 

 of only being spiny on one margin. Length of frond two feet. Colour 

 much paler beneath. Stipes and rachis very hirsute, with reddish hair- 

 like scales. Sori irregular, in some pinnae very copious, in others very 

 sparingly soriferous. My thanks are due to Mr. WoUaston for fronds. 



Dlscretum. The old Kew name of Proliferum. 



60. — Dissimile, p. 81. The Eev. C. Padley has found a good form in 

 Devonshire, in which some of the pinnae are wanting. It is thirty inches 

 long, and five inches broad. The stem exceedingly hairy. This variety 

 has also been found near Barnstaple by the late Mr. C. Jackson, and in 

 Guernsey by Mr. J. James, of Vauvert. 



61. — Diversum, p. 164. 52. — Duhmm, p. 86. Also found 



in Sussex by Mr. Gr. B. Wollaston, at Nettlecombe by Mr. C. Elworthy, 

 in Antrim by Mr. D. Moore, and in Hampshire, Wiltshire, and Wales. 



63. — Elegans, p. 103. Length of frond twelve inches; colour a rich 

 grassy green. Sori confined to three or four inches of the apex, dark 

 in colour. A leafy variety. I am indebted to Mr. Swynfen Jervis for 

 fronds raised from Irish spores. 



64. — Elworthii, p. 153. 55. — Eraston, p. 131. 



66. — Eu];>repes, p. 130. 57. — Extremum, p. 176. 



Falcatum. Another name for Laxum. 



68. — Flexuosum, p. 133. 59. — Foliosum, p. 117. 



Footii. A form of Proliferum. 60. — Formosum, p. 160. 



61. — Furcatum, p. 102. The Eev. C. Padley has found in Devonshire a 

 decomposite form of Furcatum, three feet in length, in which the apex 

 of the frond is ramose, as well as the pinnee being furcate. This is a 

 very marked variety. 



62. — Grctcile, p. 101. 63. — Grandiceps, p. 151. 



g4, — Grandidens, p. 85. Found also at Nettlecombe by Mr. Elworthy; 

 at Lisnaskea, in Ireland, by the Eev. W. E. Bailey; near Whitby by Mr. 

 W. Willison; at Weston-super-Mare by Mr. H. Parker. Mr. Bailey's Fern 

 is known as Baileyanum. It has variously inciso-laciniate pinnules, or 

 a few large angular teeth. When the rachis has sometimes been 

 developed into a horn it has been called Cornutum. I am indebted to 

 Mr. Swynfen Jervis, of Darlaston Hall, for excellent fronds. — A form 

 which I have provisionally called Q-randidens-Greyi has been found in 

 Devonshire by Mr. E. J. Gray, of Alphington, near Exeter, (formerly of 

 St. Thomas', Exeter.) This is the best form I have seen: it is dwarf in 

 habit, nearly normal in outline, although the pinnas are somewhat 



