16. IIYMENOPHYLLUM. 69 



a slit^ht wing to the racliis on the lower, hut (lec])ly ]iuinatifid on the upper side, 

 witli Ion?, narrow, parallel, simple or slightly forked linear spinuloso-dentate 

 serim. ; son often (5 to 8 to a pinna, terminal on the lower segments of the upper 

 side ; i7ivol. divided nearly to the hase with ovate entire valves. — HI, iSp. 1. p. JJ6. 

 t. 34. D. 



Hab. Chili and Chiloe. —A beautiful species, easily recognized by its peculiar pectinate 

 pinnae. 



GO. II. miiltifidum, Swartz ; st. 2-4 in. 1., wiry, naked ; fr. broadly ovato- 

 lanceolate, tripinnatiiid, 2-G in. 1., 1-5 in. br. ; 7nain rachis winged aliove, 

 w'ingless below ; the second, rachis broadly winged throughout, wavy ; pinn(B 

 and innnl. rliomboidal-lanceolate ; ult. segm. linear, 2-3 lin. 1., conspicuously 

 spinuloso-dentate ; sori 1 to 12 to a pinna, terminal on the lateral segments of 

 the upper pinnae on both sides ; invol, obovate, tubular below ; valves divided 

 not more than halfway down, entire ; recept. sometimes exserted. — Hk. 6'p. 1. 

 2}. 98. Ilk. <£• Gr. Ic. Fit. t. 167. H. feejeense, Brack, t. 37./ 2. 



Hab. New Zealand, and islands of the Pacific. — An elegant plant in the larger forms. 

 In exposed situations the fronds are much drawn together, and the segments are 

 recurved. 



Ql. ri. triangulares Baker; st. 2-4 in. L, smooth, naked ; fr. ovate-triangular, 

 tripinnatifid, 4-6 in. 1., 2-3 in. br. at the base ; main rachis winged above ; 

 the second, rachis broadly winged throughout; pinnce rhomboidal-lanceolate ; 

 lowest pinnl. deeply pinnatihd, with simple or forked conspicuously spinuloso- 

 dentate linear scgm., 2-3 lin. 1. ; sori usually solitary, placed on the upper 

 pinnic at the base of the anterior pinnule at the outer side ; invol. large, ovate, 

 fully a line duep, divided about halfway down; valves nearly entire. H. Man- 

 nianum, Mett. 



Hab. Fernando Po, Mann, 333. — Much resembling //. multifidum and hivalve in habit, 

 but the segments are broader, and the sori are much larger and usually solitary. It is 

 the only Leptocionium which has yet been found in Tropical Africa. 



G2. H. hivalve, Swartz ; st. 2-4 in. 1., wiry, naked ;yr. ovate-triangular, tripin- 

 natifid, 3-8 in. 1., 2-3 in. br. ; main rachis slightly winged above ; the second, 

 rachis winged throughout ; lower pinnce triangular-acuminate ; ^dt. segm. linear, 

 2-3 lin. 1., spinuloso-dentate ; sori very numerous, often G to 8 on a single pin- 

 nule ; invol. suborbicular, entire, divided down nearly to the base ; recept. always 

 included.— ///(:. Sp. Fil. \.p. 98. t. 35. D. H. pyriforme, V. D. B. 



Hab. New Zealand. — Best distinguished from //. multifidum by the shape of the 

 involucre. The frond is broader below and the sori are more abundant. 



63. H. Smithii, Hk, ; st. 1-2 in. 1., wiry, naked or slightly tomentose ; fr. 

 oblong-acuminate, 8-8 in. 1., 2-3 in. hr., bipinnatifid ; rachis winged above, cili- 

 ated below ; ^nnnce ol)long-triangular, with a winged rachis and simple or 1 to 4 

 times forked linear spinuloso-serrate segm. ; sori 1 to 4, terminal on the segments 

 of the pinna} on both sides ; invol. oblong, small, divided about halfway down ; 

 valves entire. — Bk. Sj?. 1. p. 97. t. 85. B. L. serrulatum, Preslii, affine and 

 holochilum, V.D.B. 



Hab. Philippine Islands, Java, and Malayan Peninsula. 



64. H. fucoides, Swartz ; st. 2-4 in. 1., wiry, ciliated ; fr. oblong, tripinnatifid, 

 4-G in. 1., 1^-2 in. br. ; main rachis winged above and ciliated ; the second, rachis 

 winged throughout ; pinnce rhomboidal-acuminate, with long narrow spinuloso- 



