152 THE BOOK OF CHOICE FERNS. 



fronds, Sin. to 5in. long, have the point bluntish, the edge entire, and the 

 lower part gradually narrowed ; they are of a somewhat leathery texture, and 

 thinly clothed with soft hairs on both sides. The abundant round sori 

 (spore masses) are disposed in long rows close to the midrib. — Hooker.^ Species 

 Filicum, iv., p. 171. 



P. (Dipteris) Horsfieldii — Dip'-ter-is ; Hors-field'-i-i (Horsfield's). 

 Synonymous with P. Dipteris. 



P. hymenophylloides — hym-en-oph-yl-lo-i'-des (Hymenophyllum-like), 

 Kaulfuss. 

 This small-growing, stove species, native of the Sandwich Islands, is 

 a very distinct Fern, resembling a Hymenophyllum in habit as well as in 

 texture. It is provided with very slender rhizomes -of a fibrous nature, and 

 its little fronds, 2in. to 4in. long and Jin. to fin. broad, are borne on densely- 

 tufted and very slender stalks lin. or less in length. The closely-set leaflets, 

 usually dimidiate (fully developed on one side of the midrib and scarcely at 

 all on the other), are cut down to a broadly-winged rachis into a few small, 

 oblong lobes of a soft texture and pellucid or transparent nature ; they are 

 finely glandular on both sides, and the spore masses are disposed at their 

 extremity. — Hooker, Species Filicum, iv., p. 228. Hooker and Greville, Icones 

 Filicum, t. 176. 



P. inaequale — in-aj-qua'-le (unequal). Fee. 



A stove species, native of Guadeloupe and Jamaica, with fronds IJft. long, 

 Sin. to 4in. broad, and cut down within Jin. of the rachis throughout into 

 narrow-oblong, bluntish lobes, those of the lower part being much reduced. 

 The texture of the fronds is somewhat leathery, they are naked on both sides, 

 and their spore masses are situated nearer the edge than the midrib. This 

 species is quite distinct from P. inoequale of Moore, which is a synonym of 

 P. guatemalense. — Hooker, Synopsis Filicum, p. 325. 



P. (Goniophlebium) incanum— Go-ni-oph-leb'-i-um ; in-ca'-num (hoary), 

 Swartz. 

 This curious and very distinct, stove species, of dwarf habit, has an 

 extensive range of habitat. Hooker gives it as a native of Cape Colony, 



