142 PELLiEA. 



allied. The fronds in the dry state are quite tawny ; the stipes and rachises pale 

 stramineous. 



16. P. termfolia. Fee ; glabrous, spithameous to a foot high, 

 caudex short bulbiform scaly, fronds coriaceous dark-green 

 narrow oblong lanceolate pinnate, pinnss opposite trifoHate 

 (])seudo-verticillate) sessile, pinnules (reflexed when dry) 

 linear mucronate uniform (mucro short opaque) two lateral 

 ones sessile intermediate or terminal one subpetiolulate, veins 

 immersed obscure, sori continuovis all round the point, invo- 

 lucres broad plane formed of the rigid margin of the pinnule 

 the edge only submembranaceous, stipes and rachis black- 

 ebeneous very glossy. — Fee, Gen. Fil. jj. 129. Allosorus ter- 

 nifolius, Kze. in Limicea, xxiii. p. 220. Pteris ternifolia, Cav. 

 Presl, 1801, n. 657. Hook, et Grev. Ic. Fil. t. 126. Pteris 

 verticillata, Sw. Syn. Fil. p. 103. WiUd. Sp. PI. v. p. 375. 

 Presl, Reliq. Hank. i. p. 57- Platyloma ternifolium, Brackenr. 

 U. S. EcVpl. Exp. Fil. p. 94. Pteris Peruviana, Poir. {Kze.) 



Hab. Andes of Peru, Jos. Jussieu (Cav.). Purrucuchu, Mafhetrs. Bafios, 

 Brackenridge. Huanuco, Pceppig. Quito, on old walls and buildings, Jameson. 

 Caracas, Linden, n. 513. Sierra Nevada, N. Granada, Schlim, n. 848. Sierra de 

 Achira and El Moro, Andes of Chili, Gillies. Mexico, Schaffner. Sandwich 

 Islands, Menzies, Douglas. On Mouna Loa and Mouna Kea, elev. 9000 feet, in 

 great luxuriance, Brackenridge. — One of the most distinct of all Ferns. We do 

 not see why the excellent Swartz should" have changed the name ternifolia of 

 Cavanilles (1801) to subverticillata, in his 'Synopsis Filicum' (1806), quoting 

 too, as he does, Cavanilles' name and date of publication. 



17. P. TFrightiana, Hook.; glabrous tufted (spithameous), 

 caudex short thick nodose scaly, fronds coriaceous pale glau- 

 cous green broad lanceolate bipinnate, pinnae opposite sessile 

 trifoliolate lowest pair pinnate, pinnules of all the pinnae 

 linear-oblong (sterile ones broad oval) with a rather cartila- 

 ginous mucro, lateral ones sessile, terminal one more or less 

 petiolulate, sori continuous, involucres much recurved very 

 rigid formed of the coriaceous convolute margin of the pin- 

 nules a little thinner at the edge, stipes and rachis black-ebe- 

 neous very glossy. (Tab. CXV. B.) Allosorus mucronatus, 

 D. C. Eat. MS. [not of Sillim. Journ. July, 1856?). 



Hab. Nevr Mexico, C. Wright, Coll. N. Me.v. 1851-.'52, n. 2130. Valley of Rio 

 Grande, Major Eaton, U.S.J. — This and the following species (P. lo7igimiccronata 

 and P. ornithopns) are very interesting species, for such I am disposed to con- 

 sider them, evidently forming, along with Pellcea ternifolia, a small but natural 

 group. They are nearly the same in size ; all have the tufted stipites springing 

 from clustered bulb-like scaly caudices or rhizomes, about the size of hazel-nuts ; 

 all have a singularly rigid habit, and narrow (at least when fertile), somewhat 

 linear pinnules; these pinnules are distinctly mucronate at the point. Pellcea 



