98 HYMKNOPHYLT-UlSr. 



ff Fronds pinnatifidly divided. 



87. U. multifiduni, Sw. ; erect, fronds broadly ovate tri- 

 pinnatifid, the segments linear narrow rigid obtuse spinulo- 

 so-dentate, involucres sessile supraaxillary obovate obtuse 

 scarcely balf bivalved, the lips entire or serrated, receptacles 

 more or less exserted in age, rachis scarcely winged very low 

 down, stipes elongated terete not winged. Su\ Sijn. Fil. p. 

 149 and 378. Schkh. Fil. t. 13.5, b. Hook, et Grev. Ic. Fil. 

 1. 1 G7. Trichomanes niultifidum, Forst. . T. macilentum, 

 Jlerh. Banks. — /3. smaller, the fronds curved downwards. 



Hal). New Zealaud, in woods on the ground, Forsier, Colenso, J. D. 

 Hooker, Sinclair.—^. Faces of rocks, New Zealand, C'o/enso.— Stipes 3—4 

 inches long: fronds 2—3 inches; in j3. scarcely an inch long. 



38. H. bivalre, Sw.; fronds erect broadly ovate tripinnati- 

 fid, the segments linear rather rigid spinixloso-dentate obtuse, 

 involucres terminal broadly ovate entire 2-valved to the cu- 

 neate base which is sunk in the frond, receptacles always in- 

 cluded, the rachis but slightly winged below, stipes terete 

 without wing glabrous. (Tab. XXXV. D.) Sw. St/n. Fil. p. 

 140 and 37-2. Schkh. Fil. i. 135 {sterile). Willd. Sp. PL v. 

 p. 523. Trichotnanes bivalve, Forst. Hymenophyllum spathu- 

 latum, Colenso in Tasm. Phil.Jonrn. Trichomanes Pacificum, 

 *' Hedic. Fil. sine Ic.'" {my copy wants also the description). 



Ilab. New Zealand, Forsier, Colenso. — This is the true //. bivalve of 

 Forster, a very little understood plant, though the general character of the 

 frond is well represented in Schkuhr : hut his figure is destitute of fructi- 

 fications, in the situation and form of which the main characters are to he 

 looked for. Its nearest affinity is with II. multifidnm. 



39. W.dichoiomam, Cav.; erect, fronds ovate or ovato-lan- 

 ceolate bipinnatifid, the segments broadly linear bi-trifid very 

 thin and membranaceous much waved sharply toothed and 

 plaited, involucres small from the apices of the lower segments 

 oval or suborbicular entire 2-valved half-way down, stipes 

 and rachis with a crisped and undulated membrane above, 

 and as well as the costa, beset with numerous soft membra- 

 naceous spines. (Tab. XXXVI. A.) Cav. Pral.n. C88. Sw. 

 Stpi. Fil. p. 140. JVilld. Sp. PL v. p. 524. Blame, Fil. 

 Jar. p. 222 .? H. plicatum, Kaalf. En. Fil. p. 208. 



Hah. Chiloe, Cavanilles, Cu))iin<j,n. ]0. Juan Fernandez, iJeWero, n. 

 1543. High mountains of Java and the Moluccas, Bluine. — A very ele- 

 gant species. Caudex creei)ing, 2 feet long. Fronds 5 — (5 inches, a little 

 longer than the stipes, very delicate and membranaceous. The almost lon- 

 gitudinal plica; of the segments, together with the soft spines or scale-like 

 processes on the stipes, vadiis and costa, aff'ord heautiful characters. It 

 may also he observed that the involucres, even when they appear to contain 

 mature capsules, remain long closed at the mouth : at length they burst 

 into 2 lips or valves halfway down. I have quoted the //. dichotomum of 



