8 CARL CHRISTENSEN AND CARL SKOTTSBERG 



valves of the indusium more rounded and flat, but certain forms of H. poly- 

 anthos show essentially the same characters. The best mark is, perhaps, the 

 glabrous base of the stipes in H. cuneatum, while most forms of H. polyantJios 

 have the stipes pilose below. 



2) Smaller plants, often much reduced and approaching H. varum R. Br. 

 (nos. 146, 1 143), and referred to that species by all authors. The leaves are 

 yellowish green, I — 3 cm long, the pinnae often more or less imbricate (no. 

 146). It must be admitted that some of these dwarf forms closely resemble 

 H. rarum in most characters, but we find leaves with and without a winged 

 stipe which otherwise are identical, and //. varum has the stipe unwinged; 

 further, all possible transitions between these dwarf forms and the larger ones 

 are found. None of the specimens show the brownish colour of the typical 

 H. rarum. 



Summarizing what has been said above, we find it convenient to distin- 

 guish two types. 



1. typicum. (//. cuneatum Kze, H. polyantJios auctt.) — Fig. 3 a — d. 



One of the commonest ferns, found in all the forests in moss carpets on 

 the soil, on stones or on trunks of trees, in the eastern and central parts of 

 Masatierra, where it ranges from about 200 m above sea level to the highest 

 parts reached, viz. the main ridge above Pangal, 795 m. It is also common 

 among the brushwood on the rocky ridges and, of course, on Dicksonia. — 

 Probably fertile at all seasons (Dec. — April, Aug.). 



Masatierra: numerous localities from Pto Frances to Pto Ingles (nos. 46, 

 66, 70, 285, 300, 591, 1 144, 1 1 77; nos. 66 c and 70 form a transition to the 

 following; both collected on rocks). 



Masafuera: Q. del Mono, in forest 570 m (no. 1146); 0. del B indado in 

 forest (no. 440); subalpine and alpine heath, 850 — 1370 m (nos. 396,429, 1146, 

 1 147); Q. Loberia, in moss on boulders in the woods, c. 300 m (no. 1 145 ). 



2. var. rariforme C. Chr. et Skottsb. — Fig. 3 e — g. 



This is exactly the H. rarum of JOHOW(l), often found on old trunks 

 of Blechnum cycadifolium, but also forming dense, almost moss-like patches 

 on exposed ground. Leaves often 1 cm long only, generally deltoid in outline. 



Masatierra: At the road to Portezuelo, c. 450 m (no. 1143); on the sharp 

 crest separating V. Anson from Q. Damajuana, on the peak, 365 m (no. 146). 

 — f. imbricata; Fig. 3 h: Pto Ingles, the crest of the central ridge (no. 1 1/8). 



Area of distribution: South Chile, Valdivia to Western Patagonia; Juan 

 Fernandez. Tasmania? New Zealand? South Africa? 



7. H. caudiculatum Mart. Ic. Crypt. Bras. 102 tab. 67 (1834); Johow 

 1893: 41, 1896: 170; C. Chr. Arkiv for Bot. 10: 23 (1910). 



In the the elevated forests of the foggy region of Masatierra, very rare; 

 apparently more frequent in Masafuera, found both in the woods and in the 

 bottom of the deepest canyons. — (Fertile Dec— Febr.) 



