4G2 SKETCH OF THE FLORA OP ALASKA. 



n. Ruthenicnm, Weinni., Sitka. 



H. Schreberi, Willd., Sitka. 



H. Stokesii, Turner, Alaska. 



H. uncinatum, Hedw., Kotzebue sound. 



H. uncinatum, var. majus, Wilson, twice as large as the ordinary form, Kot- 

 zebue sound and Alaska. 



II. revolvens, Swartz, Kotzebue sound. 



II. circinale, Hook., Kotzebue sound, Xulato, and Alaska. 



H. rugosum, Hedw., Kotzebue sound. 



H. illecebrum, Schwaeg., var. caulis divisionibus subdeudroidus foliis subinte- 

 geiTimis, Alaska. 



H. rivulare, Br. and Scli., var. foliis minus acutis, Kotzebue sound. 



H. salebrosum ? Hoff in., Kotzebue sound, 



H. nitens, Sclireb., Kotzebue sound. 



H. denticulatum, Linn., Sitka. 



H. serpens, Linn., Alaska. ^ 



HEPATICS:. 



Marcliantia polymorpha, Linn., Alaska. 

 Fegatella conica Corda, Sitka and Iktigalik. 

 Fimbraria tenella, Nees ? Alaska. 

 Jungermannia albicans, Linn., Alaska. 

 J. tricliophylla, Linn., Alaska. 

 Scapania numerosa, Nees, Alaska. 



LICHENES. 



[LIST COMPILED BT H. MANN.] 



Spliaerophoron fragile, Pers, 



S. coralloides, Pers. 



Baeomyces icmadophilus, Nyl., Biatora icmadophylla, anet. 



Cladonia gracilis, Hoffrn., Sitka and Kotzebue sound. 



C. pyxidata, Acli., Kotzebue sound. 



C. deformis, HofFm., Kotzebue sound. 



C. uncialis, Iloffm., Sitka and Kotzebue sound. 



C. rangiferina, Hotfm., all Russian America. 



C. sylvatica, Acli., all Russian America. 



Piloplioron robustum, Nyl., islands of Behring's straits. 



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



Stereocaulon paschale, Laur., Kotzebue sound. 



S. tomentosum 1 Fries, Kotzebue sound and other localities. Absence of 

 fruit renders the determination doubtful. 



Thanuiolia vermiculare, common. 



Alectoria ochroleuca, Fries, Kotzebue sound ; on the ground the normal form : 

 also, var. sarmentoso pendant from trees. 



A. divergens, Nyl., various localities. 



Cetraria Islandica, Ach., common. 



Platysma cucuUatimi, Hoffm., common. 



P. septentrionale, Nyl., Kotzebue sound. 



P. glaucum, Nyl., Kotzebue sound. 



Nephroma arcticuui. Fries, Kotzebue sound. 



Peltigera venosa, Hofi'm., Kotzebue sound. 



P. canina, Hoffm., Kotzebue sound. 



P. polydactyla, Hotlm., Kotzebue sound, Sitka, &c. 



P. apthosa, HofFm., Kotzebue sound, Sitka, &c. 



