249 : 
Lecanora pallescens (1..), Scheer. Sheep Creek, near Juneau. 
Lecanora pallescens (L..), Schzer., var. rosella, Tuck. Sheep Creek, Juneau. 
Stereocaulon tomentosum (Fr.), Th. Fr. Sheep Creek, near Juneau; Davidson 
Glacier, 
Pilophorus cereolus (Ach.), var. acicudaris, Tuck. Juneau, 3,000 ft.; Salmon Creek 
and Gold Creek Cation, near Juneau. 
Cladonia mitrula, Tuck. Juneau. 
Cladonia fimbriata (L.), Fr: Loring ; also a doubtful form from Sheep Creek, 
Juneau. 
Cladonia fimbriata (L.), F r., var. tubeformis, Fr. Sheep Creek, Juneau. 
Cladonia sguamosa, Hoffm, Sheep Creek, Juneau ; also at Nanaimo, B. C. 
Cladonia rangiferina (L.), Hoffm. Salmon Creek and Sheep Creek, near Juneau. 
Cladonia rangi ferina (L.), Hoffm , var. sylvatica, 1.. Salmon and Sheep Creek, near 
Juneau. 
Cladonia macilenta (Ehrh.), Hoffm, Loring. 
Biomyces erugtnosus (Scop.), DC. Loring ; Salmon Creek, near Juneau. 
Heterothecium sanguinarium (L.), Flot. Juneau; also at Sheep Creek near Juneau, 
Spherophorus slobiferus (L.), DC. Loring; also at Salmon Creek, near Juneau. 
My thanks are due to Mrs. Britton, for assistance in naming some of the mosses, 
and to Prof. A. B, Seymour, for his kindness in comparing some of the lichens in 
the T i 
€ Cuckerman Herbarium. CLARA E, CUMMINGS. 
An Enumeration of Some Rare North American Lichens. 
By Dr. J. W. EcKFELpt. 
The following list of species is intended to embrace some 
Plants that are but little known to the botanists of North Ameri- 
Ca, and in order to illustrate them better than by a simple list of 
flames, I herewith give the general description from plants in my 
herbarium, hoping thereby to render them better understood by 
those who are pursuing the study of lichenology. The lichens, 
to which I have here referred, are all of the Graphidacei, with 
two exceptions, From the special interest that I have taken in 
these plants, I consider them worthy to be brought into notice 
for the benefit of those who may be collecting in the neighbor- 
hood where they were found. 
PLACODIUM APHANOTRIPTA (Nyl.), Eck. Thallus atte 
Stanulose, made up of very minute ascendant lobules, whic ion 
Closely crowded into a uniform crust, supporting a delicate Me 
blue hy pothallus, grayish green, tending toa brighter yellow. By 
ecia 0.5 mm., scattered, small and flattened, ae a 
Sunken or slightly raised above the surface of the thal “ee “4 
"ight orange disk with a crenulate or wavy margin, whic 
