I'TERIS. 207 



chis rufescent channelled beneath glabrous, pinnules very 

 long-petiolate subpinnate caudate pectinated, segments ho- 

 rizontal divided to the costa linear thick crenulate obtuse 

 repand the sinus broad the apex sterile the base dilated, 

 basal areoles very narrow difficult to be seen indicated at the 

 mesoneure by a rima, sporothecia thick, indusium rather 

 broad, the margin receptaculiform, sporangia ovate on a 

 slender pedicel, annulus 16-18 joints trigonous blackish." — 

 Litobrochia (Campteria) Gardneri, Fee, Gen. Fil. p. 139. 



Hal). Ceylon, Gardner, n. 42 {Herb. Mong.). — " Large Fern ; stipes and rachis 

 reddish ; pinnae very long, remote." 



§ Litobrochia. — Veins uniformly anastomosing, or the areoles, in one or more 

 series, are confined to the costa and cosfules, the rest of the venation being 

 simple or forked; rarely all are free. Areoles inajjpendiculate. — Gen. 

 Litobrochia, Presl, Tent. Pterid.' p. 148. t. 5. / 20, 24, 25. (Hook. 

 Gen. Fil. tab. LXV. B.) 



Obs. The geiins Litobrochia is defined by its antlior, Presl, as having " venae 

 in maculas hexagonoideas elongatas vel breves anastomosantes." His first sec- 

 tion, however, has the anastomosing venation confined to the margin, consti- 

 tuting the Genus Heterophlebium of Fee. On the other hand, M. Fee admits 

 into Litobrochia Campteria of Presl, which has the basal veins united, the rest 

 free. "We shall find, in our present section, that one well-known species {Pt. 

 incisa, Th.) unites in itself three kinds of venation, that of true Pteris, of 

 Campteria, ?Lnd Litobrochia ; and other species, alluded to above, present quite 

 intermediate characters : — so that they do not always serve for specific distinc- 

 tion. 



{Fronds simple (undivided) , hastate or sagittate or more or less pedate ; stijjites 

 black-ebeneous, ccespitose, except in Pt. ludens, where they arise from a creeping 

 caudeop. — Gen. Doryopteris, /. Sm. ; Fee. — Small coriaceous Ferns, with im- 

 mersed veins scarcely visible except in very young fronds ; with ebeneous 

 stipites. They represent, in Pteris, the Pelloea geraniifolia and its allies 

 {fronds more or less pedate) among the PellcEce. Here however there are 

 species with simple fronds or only slightly divided at the base, but in a more 

 or less pedate manner.) 



78. Pt. (Litobrochia) sagittifolia, Raddi ; caudex short 

 thick erect or inclined, fronds fasciculate firm coriaceous a 

 span to a foot long lanceolato-sagittate or hastate acuminate, 

 the deflexed or patent lobes undivided or unequally bipartite, 

 veins everywhere anastomosing with oblong areoles obliquely 

 arranged, sori narrow continuous, stipes and the costa be- 

 neath black-ebeneous. 



a. sagittata ; lobes deflexed undivided. — Pt. sagittifolia, 

 RuddU Syn. Fil. BrasiL n. 106. Fil. Brasil. p. 43. t. GS.f. J . 

 Hook. Fil. Exot. t. 39. Litobrochia sagittifolia, Pr. Tent. 

 Pterid. p. 148. Doryopteris sagittifolia, /. ^m. Cat. Keiv 

 Ferns, p. 4; Cat. Cult. Ferns, p. 35. Fee, Gen. Fil. 133. 



