( 235 ) 
I refer these sterile specimens to Wasnioc, of which I have 
seen no specimens, with considerable doubt, although they 
come near the description of that species except that they are 
not tomentose to apex and the branches are mostly few, long 
and irregular. The Bolivian specimens are evidently the 
same as those under no. 245 of P. Dusen from southern Chili 
called B. plicata, but with leaf cells above narrowly linear 
as in my specimens. 
CATHARINEA POLYCARPA (Schimp.) Mill. 
Between Aten and Apolo, 1800 meters, on bank of stream 
in woods, Aug. 19, 1902 (1924). 
PstLopILUM GYMNOSTOMULUM (C. M.) Par. 
Near summit of Divide between Lake Titicaca and Sorata, 
4200 meters elevation, Aug. 29, 1g0r (1919). 
PsILOPILUM TRICHODON (Hook. fil. et Wilson) Mitt. 
Near Tolapampa, 4000 meters, Sept. 11, 1901 (1937). 
POLYTRICHADELPHUS GROSSIDENS (C. M.) Par. 
Tolapampa, 3600 meters, Sept. 11, 1901 (1935). Only a 
few poor specimens of apparently this species obtained. 
POLYTRICHADELPHUS ARISTATUS (Hampe) Mitt. 
Above Tolapampa, 3900 meters, Sept. 11, 1901 (1934). 
If this determination is correct, erzstatus has the costa smooth 
on the back as given by Mitten, not toothed as in Engler & 
Prantl. Nat. Pfl. Part 222: 683. 1905. 
PoLYTRICHADELPHUS UMBROSUS Mitt. 
Tolapampa, 3600 meters, Sept. 12, 1901 (1936). 
PoLYTRICHADELPHUS RUBIGINOSUS Mitt. 
Apolo region, 1200 to 1800 meters, Feb. 12, 1902 (1933). 
POGONATUM ABBREVIATUM Mitt. 
APOoLo, July 9, 1902, 1500 meters elevation (1926). Con- 
sata, 1200 meters, June 12, 1902 (1927). 
Pogonatum laxirete sp. nov. 
Dioicous; very slender male plants with 1~3 flowers about 
