22 ARKIV FOR BOTANIK. BAND 10. w:o 2. 
less; valves of indusium subacute; indusium scarcely broader 
than the segment. 
Juan Fernandez: Masatierra, Portezuelo de Villagra, 
29-8 mos: 
Var: 2 (=H. rarum Jehow; El KeA) 
A little smaller than the former; stem winged almost 
to its base; indusium large, flat, considerably broader than 
the segment, the valves semiorbicular. 
Juan Fernandez: Masatierra, Portezuelo de Vinagra, 
23. 8. 1908, growing with the former variety. — Masafuera; 
stream ca. 1,200 m. s. m., 27. 8. 1908, growing with H. tun- 
bridgense (new to this island). 
Neither of these two forms agrees exactly with the de- 
scription of Kunze, who describes the stipe as wingless (as 
in our var. 1) and the indusium as semiorbieular (as in var. 
2). A very small form of var. 2 (H. rarum 8 imbricatum Jo- 
how |. c. fig. 30), only 2—3 cm. high, grows according to 
JoHow exclusively on the trunks of Blechnwm magellanicum. 
It was also collected by Dr. SKOTTSBERG, but all the speci- 
mens are sterile. 
Var. 3. (=A. Cumingii Presl, Hym. 56 tab. 11 A. 1843). 
A flaccid form with broad segments; stipe wingless; 
indusium large, flat, broader than the segment; valves semi- 
orbicular. 
Patagonia oce., Golfo de Penas, P:to Hale, 9. 6. 1908, 
nr. 307. 
Chiloé: Rio Pudeto, Fundo San Antonio, 17. 7. 1908. — 
San Pedro, in primeval forest, 22. 7. 1908. 
This variety is closely related to H. rarum R. Br. but 
is much larger: pinne 3—4 em. long with 5—6 pair of seg- 
ments on each side, which again are 2—3 lobed; ultimate 
lobes 2 mm. broad. According to the original description 
H. Darwinii v. d. B. is probably a small form of var. 3. 
Hymenophyllum Skottsbergii spec. nov. 
Syn. H. abruptum var. brevifrons (Kze.) Franchet, Miss. 
scient. du Cap Horn, 5, Bot. 392. 
Species parva, habitu magnitudine Z. abrupto Hook. valde 
similis; differt laciniis marginibus crispis, indusiis acutis. 
