THE PTERIDOPHYTA OF THE JUAN FERNANDEZ ISLANDS 41 



Masafuera: Forest on the Sanchez, plain, 515 m (no. 540. Q; del M 



450 — 570 m (no. 432); Q. del Blindado. 



Generally large, bipinnatifid. All pinnae incised to a narrow wing into 

 long secondary pinnules, the upper basal oiks being reduced to a tooth in the 

 axil of the costa. Pinnules of upper pinnae deeply and distinctly serrate, 

 resembling the upper pinnae of var. obtuseserratum, those of the lower pinnae 

 again pinnatind with repand or obtusely serrate tertiary segments. Veins in 

 ultimate lobes free or also forming a single areole, rarely dark. Texture mostly 

 very thin, the lamina flaccid. This form corresponds to the var. catnbricum of 

 P. vu/gare, although somewhat more divided. 



Area of distribution of P. intermedium: Endemic. 



43. P. pyenocarpum C. Chr. Ind. ^j. Syn. P. macrocarpum I'resl, 

 Rel. Haenck. 1: 23 tab. I f. 24 (1825), non Bory; Johow 1896: 167. P. masa- 

 fuerae Phil. Linnaea 29: 107 (1857); Hemsl. jj; Johow 1893: 38; P. squcunatum 

 Phil., P. atacamense Bak. 



Masafuera: Germain! 



Only a single, badly dried specimen is known, now in the Mus. Xac. 

 in Santiago; it was collected in Masafuera by GERMAIN and was described 

 by PHILIPPI as a new species. The impossibility of refunding it made it 

 rather improbable that it should be an endemic species. After an examina- 

 tion of the original plant we have arrived at the conclusion that JOHOW was 

 right in naming it P. macrocarpum, an Andine species. The single plant 

 found perhaps grew from a spore brought from the Andes with a strong 

 northerly wind, just as the curious occurrence of Elaplwglossum, mentioned 

 below, may be explained. Johow suggested that P. atacamense Bak. (= squa- 

 matum Phil.) from the Atacama desert would be a more xerophilous form of 

 the same species; thanks to Dr. O. Stapf, who sent us a leaf of the type, 

 we are able to confirm JoHOw's opinion. It is not nearly related to P. pie- 

 bejum Ch. et Schl., as thought Hemsley. 



Area of distribution: Mexico to Chile and Argentina; Masafuera. 



44. P. lanceolatum L. Spec. PI. 2: 1082 (1753); Hemsl. ;6; Johow 

 1893: 36; C. Chr. Ind. 537. — Syn. P. peltatumt Colla 1836: 52 non Cav.; 

 Drynaria elongata Fee, Gay 6: 512; Gymnogramme elongata (Hemsl. 77?), 

 Johow 1893: 38 f. 24, 1896: 168. 



A rather common epiphyte, also in the thin woods, generally found on 

 Drimys Winteri and often in company with P. intermedium; rarely terrestrial. 

 (Fertile Dec. — April.) 



Masatierra: Pto Frances, c. 250 m (no. 129); ridge between O. Laura 

 and O. Piedra agujeriada, c. 650 m; Rabanal, frequent in the interior; C. Cen- 

 tinela, on the ground in a shallow depression of the ridge not far south ot the 

 Radio station; higher up a common epiphyte (no. 1150); Pangal (Johow); Q. 

 de la Damajuana, c. 250 m (no. 62); V. Anson, on the slopes of La Damajuana 

 (no. 215) and of El Yunque, common above 400 m; V. Colonial, along the road 

 to Portezuelo (no. 32); 0. Seca, c. 435 m; C. Salsipuedes, O. Helechos, 660 m. 



Masafuera: Forest on the Sanchez plain, 515 m; 0. del Mono, 475 m 



