CONTRIBUTIONS TO THE NATURAL HISTOEY OF ALASKA, 85 



P. aciculare, Tuck., (Sect, of Stereocaulon.) Russian America. 



Stereocaulon paschale, Lawr., Kotzebue Sound. 



S. tomentosum ? Fries. Kotzebue Sound and other localities. Absence of fruit renders deter- 

 mination doubtful. 



Thamnolia vermiculare. Common. 



Alectoria ochroleuca, Fries. Kotzebue Sound, on the ground the uormal form ; also, var. sar- 

 mentosa pendant from the trees. 



A. divergens, Nyl., Various localities. 



Cetraria islandica, Ach., Common. 



Platysma cucullatum, Hoffm., Common. 



P. septentrionale, E"yl., Kotzebue Sound. 



P. glaucum, Nyl., Kotzebue Sound. 



Nephroma arcticum, Fries. Kotzebue Sound. 



Peltigera venosa, Hoffm., Kotzebue Sound. 



P. canina, Hoffm., Kotzebue Sound. 



P. polydactyla^ Hoffm., Kotzebue Sound, Sitka, &c. 



P. apthosa, Hoffm., Kotzebue Sound, Sitka, &c. 



Sticta pulmonacea, Ach., Kotzebue Sound, Sitka, &c. 



8. scorMculata, Ach., Kotzebue Sound. 



Parmelia perforata, ACH., Kotzebue Sound. 



P. perlata, Ach., Kotzebue Sound. 

 - P. saxatilis, Ach., Kotzebue Sound. 



P. tiliacea, Ach., Kotzebue Sound. 



Physcia parietina, D. N., Kotzebue Sound. 



P. stellaris, Fries. 



P. obscura, Fries. Kotzebue Sound. 



Lecanorapallescens, var. upsalensis, Fries. Kotzebue Sound. 



L. tartarica, var. frigida, Ach., Kotzebue Sound. 



Plaqpdium elegans, Fries. 



Proroma hypnorum, D C, 



FUNGI. 



JDothidea betulina, var. Betitlw nance, Fries. Kotzebue Sound. 

 Erineum roseum, Schultz. 



ALGiE. 



Fucus vesiculosus, L., Plentiful in Kotzebue Sound. 



Alaria esculenta, Grev., Arctic coast. 



Chorda filum, Stack., 



Dyctiosiphon fceniculaceus, Grev., 



Chwtopteris plumosa, Kutz. 



Odonthalia dentata, var. angusta, Harv., Arctic coast. 



(Odonthalia Jcamtschatica. Sannakh Island. T.) 



Rhodomela larix, Ao. 



(Bhodomela flocceosa. Sannakh Island. T.) 



Delesseria sinuosa, Ac, Arctic Ocean. 



(Delesseria jiirgensii. Sannakh Island. T.) 



(Halosaceion ramentaceum. Sannakh Island. T.) 



(Ptilota asplenoides. Sannakh Island. T.) 



(Ptilota plumosa v a,r. filicina. Sannakh Island.) 



(Halidrys osmundacea. Sannakh Island.) 



Phyllophora brodicei, J. AG-. Arctic coast (single specimen broad-lea ved variety.) 



Alnfeldtia (Gymnogongrus) plicata, J. Ag. Arctic coast. 



Nostoc verrucosuml Fresh- water pools at Point Clarence. 



