HYMENOPHYLLUM. 



319 



is about as broad as the segments, and has rounded and strongly ciliated 

 valves. In a natural state the long, narrow fronds form densely interlaced 

 masses on rocks and trees. — Hooher^ Species Filicum, i., p. 91. 



H. mag"ellanicum — mag-el-lan'-ic-nm (from Magellan), WiUdenmv. 



A species of particularly rigid, upright habit, native of Chili, Chiloe, and 

 the Organ Mountains. Its oblong-triangular fronds, Sin, to Gin. long, 2in. to 

 Sin. broad, and three times divided nearly to the midrib, are borne on erect, 

 wiry stalks, 2in. to 4in. long, naked or margined on each side with an 

 undulated and crisp wing. The broadly-triangular lower leaflets have 

 deeply-cleft 23innules (leaiits), furnished on each side with several segments 

 toothed along their edges. The sori (spore masses), which are particularly 

 small, are disposed six to ten to a leaflet, and are terminal on the segments 

 of the upper leaflets ; they are provided with an oblong involucre (covering), 

 having two short-toothed valves. This species is also known as H. attenuatum, 

 and dislikes water on its fronds. — Hooker, Species Filicum, i., p. 99, t. 36b. 



H. Malingii — Ma-ling'-i-i (Maling's), Mettenius. 



A New Zealand species, very closely related to the better -known 

 H. sericeum,, from which it differs principally in the total absence of a 

 connecting membrane between the veins of the pinnas (leaflets). — Hooker, 

 Synopsis Filicum, p. 66. 



H. marginatum — mar-gin-a'-tum (edged). Hooker and Greville. 



A species of very small dimensions, native of Port Jackson, Australia, 

 with linear (narrow) fronds, about lin. long, one line broad, once or twice 

 forked, and furnished with a central costa (midvein) ; they are of a firm 

 texture, and have their margin bounded by a thickened line, and their summit 

 emarginate (notched). The terminal and solitary sori (spore masses) are 

 provided with an involucre (covering) that is nearly round, divided nearly 

 to the base, and has convex, entire valves. — Hooker and Greville, Icones 

 Filicum, t. 34. Hooker, Species Filicum, p. 87. 



H. microcarpum — mi-croc-ar'-pum (small-fruited), Desvaux. 



A species of a very hairy nature, native of South America, from Venezuela 

 and Ecuador, southward to Peru and the south of Brazil. Its broadly- 



