30 CARL. CHRISTENSEN AND CARL SKOTTSBERG 



of B. chilense. Rhizome and stipe are covered with thick, entire, lanceolate, 

 castaneous scales, 1,5 cm long by 3 mm broad. The upper part of the stipe 

 and the rhachis have similar but smaller scales. Stipe short, rarely 10 cm long, 

 angular as is also the rhachis, compressed, over Va cm broad, deeply furrowed 

 above. The numerous almost sessile, horizontal pinnae of the sterile frond are 

 more or less subcordate at base with lateral lobes overlapping the rhachis. 

 The lower pinnae are dwindling downwards, the lowest nearly semicircular. Not 

 all the sterile leaves are proliferous, the fertile never so. Fertile fronds have 

 very numerous, very long and narrow linear pinnae, 12 — 16 cm long by 2 — 3 

 mm wide only. Indusium coriaceous, nearly black, very closely imbricated and 

 first opening at full maturity, the edges entire or faintly and repandly toothed. 

 Lower reduced pinnae sterile and similar to those of the sterile frond, fertile 

 pinnae in some specimens with a basal leafy obovate segment, corresponding 

 to the basal lobes of the sterile pinnae; in others these sterile lobes are totally 

 missing. 



B. longiccmda differs widely from all other species except from B. Sprucei 

 C. Chr. (Lomaria caudata Bak.) from Ecuador, to which it is closely related. 

 We have seen the original specimens of the latter in Herb. Kew; if they are 

 of an average size, what we do not know, this is a much smaller species. It 

 differs mainly in the shape of the sterile pinnae, which are much shorter and 

 suddenly contracted into a subobtuse apex, rather unlike the long narrow one 

 in our species. The fertile pinnae are also shorter and narrower. The rhachis 

 is perhaps more densely pubescent. 



Area of distribution: Endemic in Masafuera. 



Pellaea Link. 



34. P. chilensis Fee, Gen. 129 (1852); G. Chr. Ind. 479. — Syn. Cin- 

 cimialis chilensis Fee, Gay 6: 447; NotJiocJdaena chilensis Sturm 1858; Hemsl. 

 •/j; Jobow 1893: 40 f. 25, 1896: [69. 



Dry sunny cliffs, generally near the sea, very local. Probably fertile at 

 any time. 



Masatierra: near Pto Frances (SCHREIBER t. Johow); Q. Piedra aguje- 

 riada, 30—40 m (BaCKSTROm); Pangal, far into the gorge, rocky wall 210 m; 

 near the road from the colony to Pangal, on steep rocks above the sea, 45 m 

 (no. 1 go). 



Masafuera: GERMAIN! without locality; cliffs near the landing-place at 

 Q. de las Casas, c. 20 m (no. 410). 



Very near, or too near the Andine P. nivea (Poir.) Prantl, differing from 

 it mainly in its sessile pinnules and generally more oblong segments. 

 Area of distribution: Endemic. 



