IOO CARL SKOTTSBERG 



states (Bot. Zeit. XIV. 649) that it is »frequens in insula Juan Fernandez*, but it 

 has never been found a second time. All the material consists of the two 

 sheets in Santiago and a third one in Kew. I need not tell that we made a 

 careful search after this most interesting grass, but unfortunately without result. 

 I must believe that it is a very rare plant. As it was in flower and fruit in 

 October, it may have remained sterile during our permanence (Dec. 1 — April 30), 

 and was perhaps confounded with Bromus (Megalachne). Still, every suspected 

 grass tuft was examined. 



Area of distribution: Monotypic and endemic in Masatierra. 



Polypogon Desf. 



5. P. imberbis (Phil.) Johow, Estud. 136. — Syn. Nowodworskya imber- 

 bis Phil. Anal. Univ. XLIII.562. — Fig. 1 e— i. 



Masatierra: Reed! (fig. 1 e). — Dry soil near the sea, in the western 

 section, rare; Pto Ingles (PhilippiI); B. del Padre (fl. 16 /i 17, no. 298, fig. 1 f). 



*Masafuera: near the sea in several places. B. Tolten (fl. 2 /a 17, no. 471, 

 fig. r h); Tierras Blancas, not uncommon (fl.-fr. 17 /2 17, no. 491, fig. 1 g). — 

 New for Masafuera. 



f. aristata n. f. A typo differt gluma florali longe aristata. Masafuera: 

 Playa Ancha (fl.-fr. 12 /s 17, no. 1109, fig. 1 i). 



A careful comparison with PHILlPPl's material in Herb. Santiago was made. 

 The following notes may be added. Empty glumes 2,7—3 mm l° n g> not 

 counting the awn, the inner generally a little shorter, entire, very acute, scabrous 

 on the back, awn terminal, 0,5 — 2 mm long; floral glume about 2 mm long, 

 exaristate, sparingly scabrid on the back, 5-nerved with 3 stronger and 2 weaker 

 nerves, each prolonged into a scabrid point; palea about 1 mm, hyaline, ovate, 

 ± truncate and generally 2-pointed. 



Area of distribution: Endemic. 



6. P. chilensis (Kunth) Pilger, Uber einige Gram. 386. — Chaetotropis 

 chilensis Kunth; JOHOW, Estud. 136. 



Masatierra: on open ground in some of the valleys, also in the dry western 

 section. V. Colonial (begin, fl. 29 /i2 16, no. 206); Pto Ingles (fl. 19 /i 17, no. 317); 

 Q. Juanango (fl.-fr. 9 ji 17, no. 605); Villagra, not uncommon (fl. B /i 17, no. 239). 



Area of distribution: Central provinces of Chile and Masatierra ace. to 

 JOHOW, but apparently also in other parts of South America, for PlLGER quotes 

 as synonyms Vilfa muricata Presl from Peru and Agrostis pectinata Hackel et 

 Arechavaleta from Uruguay. It was perhaps introduced to Masatierra with the 

 traffic of the 18th century. 



Agrostis L. 



*j. A. masafuerana Pilger, Uber einige Gram. 388. — Fig. 1 1. 

 Masafuera: in the alpine fell-fields, very local; Las Torres, 1370 m (past 

 fl. 14 /2 17, no. 424); C. del Barril, 1290 m. — An addition to the magellanic element. 

 Area of distribution: Endemic in Masafuera. 



