224 I'TERIS. 



Hal). idkTasixcdL, Drs. Bancroft and Macfadyen, Purdie (and var. ? with mem- 

 branaceous, pale-greea fronds ; larger pinniiles, broader at tUe base, more or less 

 l>etiolate ; segments muticous). Esmeraldas, Seemann, n. 98. — Var. Cumingiana ; 

 Panama, Cuming, n. 1182. Venezuela, Linden, n. 99. Trinidad, Lockhart. St. 

 Vincent, Lockhart. Galapagos, Capt. Wood, II. N. Mexico, Galeotti, Liebrnann, 

 Linden, n. i. — " Stipes stramineous, smooth, trisulcate, several feet high, as thick 

 as a goose-quill. Many of tlie lower pairs of pinna; pinnulate, the lowest larger 

 than the rest, a foot and a half long, on petioles 1-2 inches long, so that the 

 frond is somewhat ternate. Superior pinnse 7-10 inches long. Veins a little 

 prominent." Of the var. Cumingiana Agardh observes, " Species vix diversa, licet 

 liabitu non parum insignis et magis ad Pt. podophyllam abiens, sed laciniis mu- 

 cronatis necnou tola ramificatione ab hac aliena." 



Of this Pt. propinqua I may observe, it will be difficult to distinguish it from 

 some states of Pt. aculeata, Sw. ; and the var. Cumingiana, with its more rigid 

 fronds, shorter, more falcate, and often more mucronate segments, is, I fear, 

 identical witli Pt. apicalis of Liebmann. The pale-green membranaceous state 

 sent by Purdie from Jamaica, besides its larger pinnules, which are more sessile, 

 and more truncated at the base, wants the mucro to the segments, but these dis- 

 tinctions may be due to the plant growing under the shade of trees, and in very 

 moist situations. It is probably wrongly referred here. 



106. Pt. (Litobrochia) hemipteris, Fee ; " fronds pitmato- 

 pinnatifid very glabrous, frondules petiolate acuminate nearly 

 opposite, segments slightly falcate toothed nmcronated, of 

 the two basal ones the superior one is much the largest." — 

 Litobrochia hemipteris. Fee, Fil. Sme Mem. p. 7G. 



Hab. Mexico, very rare, Schaffner. — " Analogous to Litobrochia Orizaba;, Fee." 

 " II faudrait le revoir sur d'autres specimens." 



107. Pt. (Litobrochia) setifcra, Fee; "fronds pinnate, 

 rachis reddish trisulcate above {duos fusciculos vasorum lit- 

 terain v> eversam simulant es ferente), pinnee pinnatitid gla- 

 brous remote lanceolate, terminal segment long-acuminate, 

 segments lanceolate falcate terminated by a very long and 

 slender seta separated by a broad rounded sinus, sjjorothecia 

 not extending to the serrated ape.x, indusium rather broad 

 firm, sjjorangia ovoid mixed with chain-like amber -coloured 

 hairs, annulus narrow 18-20-articulated, spores trigonous 

 smooth." — Litobrochia setifera, Fee, Gen. Fil. p. 1.38. 



Ilab. Mexico, about the crater of the volcanic mountain St. Martin, Galeotti, 

 n. 6.^71. — " Filix glabra, distinctissima."— The affinity of this, judging from Ca- 

 leotli's specimens in Herb. Nostr., is certainly with our Pt. propinqua, \^x. Cu- 

 mingiana (Pt. apicalis, Liebm.); but the segments are much narrower, gradually 

 tapering from the base, and terminating in a long seta. 



108. Pt. (Litobrochia) aculeata, Sw. ; "fronds below bi- 

 pinnate lowest pinnae auriculate, pinnvdes subpetiolulate lan- 

 ceolate pinnato-partite, segments lanceolate falcate serrated, 

 basal veins biarcuate, tertiary areoles marginal." — Siv. Prodr. 

 p. 129. Ft. Ind. Occ. p. 1001. Syn. Fil. p. 100 {e^x-l. the 



