TAB. CXXVI. 
PTERIS TERNIFOLIA. 
FILICES.—GvnATXxX. Br.  Porveopnracrem. Kaulf. — Firrczs vere. Willd. 
Gzw. Cuam. PT'ERIS, Linn. ;Sori lineares, marginales, continui ; capsulis sinu involucri in- 
sertis. — Znvolucrum marginale, continuum, scariosum, intus liberum. £r. 
PrEnus £ernifolia; fronde bipinnata subcoriacea glabra, foliis ternatis linearibus margine revolutis 
summis binatis simplicibusque. 
Pteris ternifolia. Cavan. Prel. 1801. 2. 657. 
Pteris peruviana. — Poir. in. Encycl. Bot. v. 5. p. 718. (1805.) | Spreng. Syst. eset. v. 4. p. 78. 
Pteris subverticillata. Swartz. Syn. Fil. p. 103. — JF'illd. Sp. Pl. v. 5. p. 375. 
Pteris ternata. .JMenzies MSS. 
Has. In insulis Sandvicensibus. 7Menszies. Peru. Jos. Jussieu; Cavanilles. In muris anti- 
quis et zdificiis prope urbem Quito. JD. Prof. Gul. Jameson. ' In fissuris rupium, apud 
Sierra de Achiras et El Moro, Andium Meridionalium. J. Gillies, M. D. 
Radix e fibris paucis, villosis. | | 
Plante caespitosee crescunt. 
Spes digitalis, erectus, teres, atro-fuscus, nitidissimus, inferne solummodo paleaceo-squamosus, squamis lanceolatis, 
atris, fusco-marginatis, laciniatis, pilis immixtis. 
Frons lineari-lanceolata, bipinnata, pinnis oppositis, ternis, sessilibus, supremis binis vel-simplicibus, singula vix 
pollicem longa, lineari, acuta, margine revoluta, omnino glabra, superne medio canaliculata. tacAis teres, 
atro-fusca, nitidissima. | 
Sor? marginales, continui. : 
Iwoolucrum latiusculum, inflexum, e margine frondis formatum. 
Capsule pedicellatae. 
Semina exacte sphzerica, fusca. 
Fig.1. Portio pinnz, cum sori. f.2. Capsule. f. 3. Semina:—magn. auct. 
I do not know why the specific name of Swartz for this plant, P. verticillata; or that of 
Poiret, Pt. peruviana, should be preferred to that of Cavanilles, which is anterior in point of date, 
and admirably expressive of the curious structure of the pinnz of this plant. 
The species seems to be confined to the western side of the great continent of South America, 
extending, however, from Quito to the parallel of Mendoza, and to the opposite islands of the 
Sandwich group. | 
x 
