130 CARL SKOTTSBERG 



Rosaceae. 

 Rubus L. 



64. R. geoides Sm. — SKOTTSBERG, Stud. 10. 



Masafuera: Not uncommon in the alpine region, but not observed at a 

 lower altitude than 1000 m. Highland north of Casas, 1130— 1370 m (fr. Feb. 

 1917, no. 404); C. del Barril, 1290 m (no. 538); Los Inocentes, from 1375 m 

 to the top; ridge between Q. Inocentes and Q. Angosta, c. 1000 m. — Dis- 

 covered by the writer in 1908. 



Area of distribution: Patagonian Andes (two localities; one far north, 38 , 

 needing confirmation); West Patagonia; Fuegia; Falkland Islands; Masafuera. 



Margyricarpus Ruiz et Pav. 



65. M. setosus Ruiz et Pav. subsp. digynus Bitter, SKOTTSBERG, Stud. 9. 

 Johow, Estud. 91. 



Masatierra : on the low, dry slopes below the forest region, also in the 

 western half of the island and on the high ridges' above the forest. — Between 

 Pto Frances and V. Colonial, on the slopes of the valleys and on the ridges, 

 common on the slopes of El Centinela (also observed by Johow); V. Colonial, 

 not uncommon (also observed by Johow); C. Salsipuedes, ascending to 500 m 

 (fl.-unr. fr. 8 /i2 16, no. 71); La Vaquena, dry slopes; between Villagra and Pta 

 Larga, scattered in the steppe-like vegetation (fl.-unr. fr. 7 /i 17, no. 233). 



Area of distribution: Peru; Central and South Chile; Argentina (Prov. 

 Buenos Aires); Patagonia. The subsp. digynus endemic in Masatierra. 



Acaena L. 



66. A. masafuerana Bitter Bibl. Bot. 74 (191 1) 45. — Fig. 10. 

 Masafuera: Scattered in the fell fields, forming small dense mats together 



with mosses and lichens. Between the Correspondencia Camp and Las Torres, 

 1 130 — 1370 m (fl.-fr. 14 /2 17, no. 395); edge of west precipice above Buque 

 Varado, c. 1230 m; C. del Barril, 1110— 1360 m (fr. Vs 17, no. 539); Los Ino- 

 centes, from 1 125 m to near the summit (fr. 9 /3 17, no. 380). 



Sterile specimens were brought by the writer in 1908 and described by 

 Professor BITTER. The new material was again studied by him, and he gives 

 the following account of it. 



»Procumbens vel parum ascendens, caespitosa, caudex cr. 2 — 4 mm crassus, 

 in radicem sat longam ramosam exiens, in ramos complures ± ve divaricantes 

 partitus; rami inter muscos et gramina repentes, breves, ± ve congest! vel 

 longiores cr. 4— n cm longi, infra vaginis fuscescentibus subnitidis foliorum 

 emortuorum densiusculis obtecti, apice foliis adhuc vigentibus subrosulantibus 

 instructi; folia parva, cr. 1,2 — 4 cm longa; vaginae rufo-fuscescentes, nitidae, 



