298 



THE BOOK OF CHOICE FERNS. 



H. Wilsoni— Wiy-son-i (Wilson's), Hooker. 



This very peculiar and distinct species, of large dimensions, is a native 

 of Mansfield, near Bath, Jamaica, where it grows at an altitude of lOOOft. 

 Its trunk, of a somewhat slender nature, attains from 12ft. to 14ft. in height, 

 and produces fronds 12ft. long and 4-Jft. broad, bipinnate (twice divided to 

 the midrib), and borne on stalks about 2|^ft. long. The oblong, sharp- 

 pointed leaflets, l^ft. long and 4in. to 5in. broad, are deeply pinnatifid 

 (cleft nearly to the midrib) at their extremity ; their pinnules (leafits) are 

 oblong-spear-shaped, stalkless, of a parchment-hke texture, smooth, and 

 bright green in colour. The small and abundant sori (spore masses) form 

 a line about midway between the midrib and the margin ; they are provided 

 with a pale brown involucre (covering) of parchment-like texture, often 

 irregularly two-lobed. — Hooker^ Synopsis Filimm^ p. 30. 



HETEROPHLEBIUM— Het-er-oph-leb'-i-um. See Pteris. 

 HEWARDIA— Hew-ard'-i-a. See Adiantum. 

 HOLOCHL^NA— Hol-och-la3'-na. See Pell^a. 

 HUMATA— Hum-a'-ta. See Davallia. 

 HYMENODIUM— Hym-en-o'-di-um. See Acrostichum. 

 HYMENOLEPIS— Hym-en-or-ep-is. See Acrostichum. 



