40 FLORA 03? NEW ZEALAND. [Fihces. 



from satisfied as to its being the P. invisum of Forster, a plant which appears from his Prodromus to be a native of 

 New Zealand, but which has been omitted from every succeeding enumeration. Swartz describes P. invisum as a 

 native of Jamaica, and Schkuhr quotes both this and New Zealand as its habitats.— Fronds a span to 18 inches tall, 

 rising from the top of a prostrate woody rhizome, quite glabrous, lanceolate, pinnate. Pinna distant, sessile, 1-li 

 inch long, acute, deeply pinnatifid ; pinnules close, \ inch long, linear-oblong, blunt, quite entire ; veins forked, the 

 upper simple. Sori small, placed at the fork of the lower veins, or at the middle of the upper (as in N. thelypteris) . 

 RacUs and stipes perfectly glabrous and shining, when young covered with scattered, membranous, turgid scales. 



Note. Jspidium Serra, Sw. et Willd., a very common tropical Fern, is quoted as a native of New Zealand, 

 on Forster's authority. I find no New Zealand specimens of it in Forster's Herb. (Mus. Brit.), and am very doubtful 

 whether the J. Serra of the Prodromus be the plant of Swartz and Willdenow. It is introduced in M. Kaoul's 

 catalogue as a native of Akaroa. 



Jspidium pennigerum, Swartz, is another plant probably erroneously included in the New Zealand Flora, 

 on the supposition that it is the Polypodium pennigerum, Forster, Prodr. The latter is, however, a very different 

 plant, now placed in the genus Goniopteris, and Swartz cites Forster as authority for its being a native of New 

 Zealand, and describes it as having an involucre, but quotes Schkuhr's plate, which represents an authentic 

 specimen of Forster's that has no involucre. Sprengel gets over the difficulty by describing the Goniopteris, and 

 adding that the involucres are caducous. 



Nephrodium molle, Br. Prodr.— This is the Polypodium nolle, Forster, said to be from New Zealand; but Forster's 

 specimens (Hb. Brit. Mus.) are not so marked, and, though an extremely common tropical and subtropical Fern, I 

 have seen no specimens from these Islands. 



Sub-tribe B.—Sorus naked, neither covered by an involucre, nor by the inflexed margin of the frond. 



Gen. XIX. to XXVIII. 



Gen. XIX. GONIOPTEBIS, Fred. 

 Sori globosi, dorsales, nudi, medio venularum inserti. Fence simplices, inferiores in arcum anasto- 

 mosantes. 



The only species found in New Zealand is a very tall, handsome, glabrous, pinnate Fern, 2-3 feet high, with 

 membranous, linear, acuminate or caudate, pinnatifid (to the middle) pinnae a span or upwards long, and f inch 

 broad: lobes or pinnules short, blunt, quite entire.— Feinlets in each pinnule free, the lower meeting those of the 

 next pinnule at an angle. Sori numerous, without an involucre, placed on the middle of each veinlet, rather nearer 

 the costa than the margin. Bachis and stipes quite glabrous, smooth and shining, thick but soft, sometimes palea- 

 ceous at the base ; old specimens acquire a stout, erect, woody caudex, 6-8 inches high, covered with the bases of 

 the old stipes.— This species is found in New Zealand only, others occur in various parts of the Tropics. (Name, 

 from yovv, an angle; in allusion to the arched veins.) 



1. Goniopteris fennigem, J. 8m. ; glaberrima, fronde lanceolata pinnata membranacea, piimis lineari- 

 elongatis acuminatis caudatisve ad medium pinnatifidis, pinnulis obtusis integerrimis, soris versus costam in- 

 sertis, racbi stipiteque crassiuscula glaberrima Bifida.-/. 8m. Gen. Fems,p. 18. Aspidium; A. Rick. Flor. 

 A. Cunn. Prodr. Polypodium, Forst. Prodr. Scht Fit. t. 22. 



Hab. Northern and Middle Islands : in shady places, as far south as Akaroa, common. Nat. name, 

 " Piu piu" (trembling), Colenso. (Cultivated at Kew.) 



Gen. XX. POLYPODIUM, Presl. 

 Sori globosi, dorsales, nudi, medio venularum inserti. Yen® furcate, nunquam anastomosantes.- 

 Frons pinnatifida v. bi-tripinnata. 



