xi, c. i Copeland: The Genus Loxogramme 45 



4. Fronds pellucid L. Salvinii (Hook.) Maxon. 



3. Fronds more ample. 



4. Fronds narrowed to the base. 

 5. Stipes short or none. 



6. Costa most prominent above I. blumeana Presl. 



6. Costa most prominent below L. involuta (Bl.) Presl. 



5. Stipes ±10 cm long L. grandis (Racib.) Copel. 



- 4. Fronds abruptly narrowed at base I. Forbesii Copel. 



A> LOXOGRAMME LINEARIS Copel. sp. nov. 



Rhizomate repente, 2 mm crasso, paleis griseo-castaneis lan- 

 ceolatis 3 mm longis acutis vel acuminatis vestito; stipitibus 

 proximis vel subremotis, validis, atropurpureis, nitidis, 3-6 cm 

 altis; frondibus 25-30 cm altis, 10-15 mm latis, acuminatis, 

 coriaceis, glabris, costa praecipue superne praestante; soris 

 angulo acuto cum rhachi positis, margine remotis, imbricatis, 

 linearibus, saepius ca. 25 mm longis. 



Formosa, Arisan, alt. 2,500 m, in rupibus, Faurie 959, Junio, 1914. 



Between L. parallela and L. Faurie, and more like the former, from 

 which it differs in being 1 larger throughout and in the less caudate but 

 broader paleae. 



LOXOGRAMME AFRICANA sp. nov. 



Rhizomate late repente, 1.2 mm crasso, more generis paleaceo; 

 stipitibus ca. 2 cm distantibus, usque ad alam decurrentem 

 laminae 3 cm altis; fronde 10-15 cm alta, ±15 mm lata, lineari- 

 oblonga, sursum abrupte acuta vel subacuminata, deorsum ad 

 alam brevem angustata, subcoriacea, opaca; areolis usque ad 7 

 inter costam et marginem; soris 7-10 mm longis, latis, subim- 

 mersis, superne haud praestantibus, costam prope et ea subpara- 

 llelis, rarius imbricatis. 



Angola, Pungo-Andongo, Mechow's expedition No. U2, distributed as 

 Polypodium Loxogramme Mett., coll. in 1879. This differs from L. lanceo- 

 lata (Sw.) Presl in the shape of the frond, which has an almost uniformly 

 broad central part; the texture is thicker, and the stipe much longer. 

 Gymnogramme abyssinisa Baker seems to be L. lanceolata rather than 

 this species. 



-CjlJl LOXOGRAMME FAURIEI Copel. sp. nov. 



Rhizomate repente, 1-2 mm crasso, lignoso, paleis lanceolatis 

 acutis vel acuminatis plerisque deciduis apud baseos stipitum 

 persistentibus castaneis vestito; stipitibus 3-5 cm altis, validis, 

 teretibus vel sursum applanatis; fronde 15-30 cm alta, oblan- 

 ceolata vel lineari-oblanceolata, acuminata, deorsum sensim an- 

 gustata, coriacea, glabra, siccante interdum subinvoluta; soris 

 rectis, patentibus, imbricatis, linearibus, ad marginem fere 

 attingentibus. 



