* 



62 16. HYMENOPHYLLUM, 



sides ; invol. small, divided down nearly to the base, denticulate at the apex. 

 Ilk. Sp. Fil. \,p. 110. Sphaerocionium glanduliferum, Presl. 



Hab. New Zealand. By their hairy rachis, this species and H. exsertum form a 

 link between the glabrous and truly hirsute species. 



27. H. dilatatum, Swartz ; st. 2-4 in. 1., erect, wiry, slightly winged above ; 

 fr. 6-12 in. 1., 4-6 in. br., ovate-lanceolate, tripinnatifid ; main rachis winged 

 throughout, the wing quite flat ; lower pinnae rhomboidal-lanceolate, divided 

 down nearly to the rachis, the lower pinnl. again pinnatifid ; sori 2-12 to a 



Einna, terminal or axillary on the segments on both sides, divided about 

 alfway down ; valves rounded, entire, clusters often exserted. Hk. Sp. 1. 

 p. 104. Hk. & Gr. Ic. Fil. t. 60. H. formosum, Bracken. H. Junghuhnii & 

 eximium, V. D. B. 



Hab. New Zealand, Java, Tahiti, Samoa, Aneiteum, Fiji and other Polynesian 

 Islands. Closely allied to H. fuciforme, but different in the involucre. 



28. H. fuciforme, Swartz ; st. strong, erect, 4-8 in. 1., narrowly winged above ; 

 fr. 12-24 in. L, 4-6 in. br., triangular-lanceolate, tripinnatifid ; main rachis 

 winged throughout ; lower pinnae rhomboidal-lanceolate, cut down nearly to the 

 rachis into numerous distant pinnl. on both sides, the lowest of which are trian- 

 gular in outline and again pinnatifid, with 2-3 forked lower segm. ; sori numerous, 

 very small, placed principally in the axils of the segments ; valves divided down 

 nearly to the base, rounded, entire ; recept. and even the cluster of capsules often 

 exserted Hk. Sp. 1. p. 103. t. 36. D. 



Hab. South Chili and Juan Fernandez. 



29. H. pulcherrimum, Colenso ; st. 3-4 in. 1., wiry, erect, wingei down to the 

 base ; fr. 6-12 in. 1., 4-6 in. br., ovate-triangular, 3- or 4- pinnatifid ; main rachis 

 slightly winged throughout ; lower pinnae 2-3 in. 1., lanceolate-rhomboidal, the 

 second'ary rachis flexuose, slightly waved, the pinnae with several distant 

 pinnl. on both sides, the segm. of which are again pinnatifid with cuneate flabel- 

 lately pinnatifid lower divisions ; sori numerous, axillary and terminal on the 

 segments on botb-sides ; invol. orbicular, divided down nearly to the base ; valves 

 entire. Hk. Sp. 1. p. 103. t. 37. A. Rk.fil. Fl. N. Z. 232. t. 74. 



Hab. New Zealand. Species 20 to 29 much resemble one another in habit, and all 

 have ample tripinnatifid firm glossy fronds, with comparatively broad erecto-patent 

 segments. 



30. H. Zollingerianum, Kunze ; st. 2-4 in. 1., wiry, deciduously hairy ; fr. 4-8 

 in. 1., 1^-2 in. br., lanceolate-acuminate, with a flaccid apex, tripinnatifid ; pinnae 

 rather distant, the lower ones ovate-rhomboidal, cut down to a rather broad 

 centre ; pinnl. close, the lower ones again deeply pinnatifid ; main rachis narrowly 

 winged and often slightly hairy, a single central vein in each segment, the lower 

 part of which is conspicuously winged on both sides ; sori 2 to 8 to a pinnule, 

 large, terminal or axillary ; invol. divided about halfway down, the mouth 

 roundish, entire. V. D. B. Hymen. Jav. t. 50. 



Hab. Java. By its deciduously hairy rachis, this approaches the next section. The 

 habit is something like that of H. polyanthos, with an elongated flaccid apex, and the 

 curiously winged veins are very peculiar. 



*** Fronds more or less ciliated and hairy upon the surface. Sp. 31-51. 



31. H. borneense, Hk. MSS. ; st. about 1 in. L, very slender ; fr. square or 

 fan-shaped in general outline, -f in. 1., \ in. br., divided down like a fan nearly 



