4° CARL CHRISTENSEN AND CARL SKOTTSBERG 



A typo differt pinnis basi magis angustatis, margine distincte dentato- 

 serratis vel grosse obtuse-serratis, interdum pinnis plus minus pinnatifidis, basa- 

 libus compositis, rhachide angustissime alata. 



Fig. 6. 



*Endemic in Masafuera. All forms seem to differ from the type by their 

 pinnae being more narrowed towards the base, and by the nearly unwinged 

 rhachis. We distinguish the following varieties. All of them are epiphytic on 

 trees, mostly on Myrceugenia Schulzei, only once a form has been observed 

 growing on rocks. All forms were seen with ripe sporangia (Feb. — March). 



var. obtuseserratum C. Chr. et Skottsb. nov. var. 



Frons plerumque haud magis quam in typo divisa, sed pinnae multo 

 distinctius serratae vel lobulatae, serraturis vel lobis sat irregulariter dentatis; 

 pinnae basales breviores, rarius basipinnatae. - - Fig. 6 a; HEMSLEY Fig. 2. 



Masafuera: Forest on the Sanchez plain, 515 m, growing in company 

 with the following forms (no. 527). Q. del Mono, 450—570 m (no. 1 182); Q. 

 del Blindado; Q. Loberia, 280 m, in forest (no. 431) and below the forest, in 

 the gorge, on rocks (f. coriacea, no. 1148). 



Generally not more divided than the type, but the pinnae, often consi- 

 derably narrowed towards the base, are much more deeply serrate, the ser- 

 ratures again irregularly dentate, or cut more than halfway down to the midrib 

 into oblique, repand or serrate lobes, the basal ones shorter or obsolete; some- 

 times the basal pair of pinnae produces one or two longer lobes on the lower 

 side, or, more rarely, on the upper side, thus forming a transition to the follow- 

 ing variety. Veins of the lobes often free but not seldom forming one or 

 two areoles. 



var. basicompositum C. Chr. et Skottsb. nov. var. 



Pinnae basales regulariter et profunde pinnatifidae segmentis elongatis; 

 pinnae superiores ut in praecedenti vel interdum suprabasales segmentis 2 — 3 

 longis instructae. 



Fig. 6 b, c\ Hemsley Fig. 3. 



Masafuera: Forest on the Sanchez plain, 515 m (no. 1181); Q. del Mono, 

 570 m (no. 1 186); Q. de las Casas, on a tree fallen down from the wall of the 

 canyon (no. 529). 



Basal pinnae regularly and deeply pinnatifid with lengthened segments on 

 both sides; upper pinnae as in the preceding form, but sometimes the second 

 pair of pinnae produces two or three long segments. The basal upper segment 

 of basal pinnae short or often quite rudimentary. 



var. cambricoides C. Chr. et Skottsb. nov. spec. 



Plerumque maxima, tripinnatifida. Frons flaccida textura tenuis. Pinnae 

 usque ad costam alatam incisae, pinnulis basalibus superioribus ad dentem 

 axillarem reductis. Pinnulae pinnarum superiorum profunde et distanter obtuse- 

 serratae, illae inferiorum pinnatifidae segmentis tertiis repandis vel obtuse 

 serratis. 



Fig 6 e. 



