WILLIAMS: NOTES ON SOME WESTERN LICHENS 25 
ACAROSPORA CERVINA (Wahl.) Koerb. 
Two-medicine Lake, Blackfeet Indian Reservation, August, 
1897 (97). This is a small western species, on rock, with apo- 
thecia more or less immersed and the ascus crowded with minute 
spores about 4 pu. It has been mostly collected in California, 
under the name Lecanora fuscata (Schrad.) Th. Fr. This seems 
to be its most northern record. 
ACAROSPORA CHLOROPHANA (Wahl.) Massal. 
Henry Mountain, Blackfeet Indian Reservation, at 7000 ft., 
August, 1897. One of the most conspicuous of yellow, rock-loving 
species. The Golden Gate (or Gardiner) entrance to Yellowstone 
Park takes its name, I believe, from the quantity of this lichen 
covering the rock-walls near. 
LECANORA ATRYNEA (Ach.) Nyl. 
Near Two-medicine Lake, August, 1897 (90). The speci- 
mens more closely resemble some from the Pyrenees, determined 
by Nylander, than those from California collected by Herre. The 
California specimens are the only ones of North America in the 
museum, but it is mentioned in Miss Cummings’s list of Alaska 
species as credited to that region by Dr. Almquest. 
LECANORA THAMNOPLACA Tuck. 
Columbia Falls, November, 1893, in fine fruit (gr); also col- 
collected east of the Rocky Mountain Divide in Montana. 
BLASTENIA FESTIVA (Fr.) Hasse. 
Near Forty-mile Creek, Blackfeet Indian Reservation, August, 
1897 (z06). A small and inconspicuous rock-loving species. 
These Montana specimens appear to be the only ones collected 
outside of California in this country, but I believe are correctly 
referred here although the spores are not polar-bilocular as ordi- 
narily occurs in this genus. Hasse states that the spores may be 
simply bilocular. 
RINODINA CHRYSOMELAENA (Ach.) Tuck. 
Forty-mile Creek, Blackfeet Indian Reservation, August, 
1897 (116). This species has been but rarely collected and not 
before to the westward of the Mississippi, I believe. 
New York BotanicaL GARDEN 
