40 I. — PiLiCES. \Hymeno2}hyUum 



ovate or orbiciilar, as broad or broader than the segments ; valves 

 divided to the base, lips entire or denticulate. 



Synonyms. — H. crispatum, Walliah ; H. fimbriatum, J. Sm. ; 

 H. flexuosum, A. cunn. ; H. flabellatum, Br. (not Labill.) ; H. 

 daedalum and H. erosum, Blume ; H. reinwardii, H. micranthum, 

 and H. tasmanicum, F. dem Bosch. 



H. ati-o-virens, Colenso, is a variety only, in which the segments 

 of the frond are nearly plane, and the involucres rather narrower 

 than the segments. 



Distribution. — India, Ceylon, Malay Peninsula, Philippine 

 Islands, Australia, Tasmania, and E. to the Chatham Islands. 



This species ranges widely in New Zealand, but is rather local in 

 its occurrence. It occurs in many localities to the north of Auck- 

 land, in the islands to the east, and in the forest region of the 

 interior, down towai'ds Wellington. At the Thames it is common 

 at an elevation of about 1,500 ft. In the South Island it occurs 

 sparingly along the eastern side of the central ranges, as at Rakaia 

 Gorge, Malvern Hills, &c. ; more common near Dunedin; while in 

 the dense forests of the West Coast of Otago it is abundant, and 

 ascends to over 2,000 ft. 



10. H. montanum, Mrk 



Rhizome slender, wiry, creeping. Stipes about 1 in. long, winged 

 nearly to the base. Fronds few, 2-3 in. long, glabrous, linear-oblong 

 or oblong-lanceolate, bi-pinnatifid, dull-green; rachis flexuous, winged; 

 pinnae in from 5-8 pairs, mostly alternate, spreading, about J in. long, 

 cut nearly to the rachis into 2-4 spreading, linear, forked or bilabiate 

 segments. Involucres terminating the segments, small, oval, 

 2-lipped nearly to the base ; lips deeply toothed or jagged, 

 receptacle included. 



This very recent addition to the New Zealand Hymenophyllse was 

 gathered on the mountains at the head of Lake Wakatipu. I have 

 not seen the plant, and have therefore given Mr. Kirk's description 

 in its entirety. The description and figure occur in the " N.Z. 

 Inst. Trans.," vol. x. p. 394. 



The species differs from the others of the same section in its 

 narrow involucres, with deeply toothed or jagged lips. 



Mr. Armstrong (" N.Z. Inst. Trans.," vol. xii. p. 346) suggests 

 this as a variety of H. tunhridgense, but apparently without 

 any reason, and reports it as occurring locally in the Canterbury 

 Alpine district. 



11. H. dilatatum, Swartz. 



A very large, handsome, sub-erect fern, with a long, stout, wiry, 

 and glabrous rhizome. Stipes 2-6 in. long, erect, wiry, winged above. 

 Fronds bright-green, 6-18 in. long, or even as much as 30 in. in 

 very fine specimens, 4-6 in. broad, ovate or ovate-lanceolate, 3-pin- 

 natifid; mainrachis winged throughout; lower pinnse ovate-lanceolate, 



