322 



THE BOOK OF CHOICE FERNS. 



provided with an involucre (covering) that is divided to the base and has 

 egg-shaped or rounded valves entire or sinuated at the summit. — Hooker^ 

 Species Filicum, i., p. 106, t, 57d. 



H. Neesii — Nees'-i-i (Wees'), Hooker. 



A species of small dimensions, native of Ceylon, Java, Borneo, Fiji, and 

 the Philippine Islands. Its small, egg-shaped fronds, about 2in. long, fin. 

 broad, and three times divided nearly to the midrib, are borne on naked or 

 slightly-winged stalks lin. to 2in. long. The rachis (stalk of the leafy 

 portion) is winged throughout, the wing and leaflets being much crisped. 

 The small and usually single sori (spore masses) are disposed in the axils of 

 the upper leaflets ; they are provided with an involucre (covering) that is 

 nearly cylindrical below, divided more than half-way down, and having 

 slightly-toothed valves. — Hooke?', Species Filicum, i., p. 99. Beddome, Ferns 

 of British India, t. 279. 



H. nitens — nit'-ens (shining). A synonym of H. Jiabellatum. 



H. nitidum — nit'-id-um (shining). A synonym of H. fiahellatum. 



H. nudum — nu'-dum (naked), Desvaux. 



A small Fern, native of the West Indies, with fronds l^in. to Sin. long, 

 erect, broad, bipinnate (twice divided to the midrib), and fringed with hairs. 

 — Lowe, New and Rare Ferns, Addenda, p. 182. 



H. obtusum — ob-tu'-sum (blunt), Hooker and Arnott. 



This small-growing species, native of Oahu, Sandwich Islands, is of 

 a particularly woolly nature. It spear-shaped fronds, three times divided 

 nearly to the midrib, 2in. to 4in. long, lin. to 2in. broad, and borne on 

 slender, cihated stalks 2in. long, have their rachis (stalk of the leafy portion) 

 winged throughout and the surface and margin of their pinnules (leafits) 

 copiously clothed with pubescence. The sori (spore masses), two to six to 

 a leaflet, terminal on the lateral segments, are j)i"ovided with an involucre 

 (covering) that is as broad as the segments, divided about half-way down, 

 and having rounded and strongly-ciliated valves. — Hooker, Species Filicum, 

 i., p. 98, t. 33d, 



