HYMENOPHYLL UM. 



317 



H. javanicum — ^ja-van'-ic-um (Javanese), Sprengel. 



This species, with which H. fimbriatum and H. tasmanimm are identical, 

 has a very wide range of habitat, being found in India, from Nepaul and 

 Sikkim to Ceylon, the Malayan Peninsula, the Philippines, !New Zealand, 

 and Australia. Its triangular fronds, 4in. to Sin. long, 3in. to 4in. broad, 

 borne on erect stalks 2in. to 4in. long and 

 margined above with a broad, crisped wing, are 

 tripinnatiiid (three times divided nearly to the 

 midrib). The lower leaflets, l^in. to 2in. long, 

 are divided to a narrow, crisped centre into several 

 flat or slightly -crisped leafits on both sides, the 

 lower of which are deeply pinnatifid (Fig. 82). 

 The sori (spore masses), six to twelve to a leaflet, 

 are terminal and axillary on the segments on both 

 sides, and are provided with an involucre (covering) 

 that is about as broad as the segments, divided 

 down nearly to the base, and furnished with 

 roundish valves entire or dented. — Hooker, 

 Species Filicum, i., p. 106. Nicholson, Dictionary 

 of Gardening, ii., p. 166. 



H. khasianum — khas-i-a'-num (from Khasya), 

 Baker. 



A species of small dimensions, native of 

 Khasya, with lanceolate (spear-shaped) fronds 2in. 

 to Sin. long, produced from a wide -creeping, slender 

 rhizome (prostrate stem), and borne on stalks ^m. 

 to IJin. long and winged upwards ; they are three times divided nearly to 

 the midrib, and the abundant and terminal sori (spore masses) are provided 

 with an egg-shaped involucre (covering) that is divided down nearly to the 

 base. — Hooker, Synopsis Filicum, p. 464. 



Fig. 82. Frond and Rhizome of 

 Hymenopliyllum javanicum 



(\ nat. size). 



H. lanceolatum — lan-ce-ol-a'-tum (spear-shaped). Hooker and Arnott. 



A dwarf-growing species, native of the Sandwich Islands, with spear- 

 shaped or oblong fronds Sin. to 6in. long, lin. to 2in. broad, and borne on 



