Clark: Hefaticae from the state of Washington 301 



its principal divisions, instead of on short ventral branches. A. 

 Lindeiibergiana may be at once distinguished by its monoicous 

 inflorescence, by its violet-red pseudoperianth, by its dark purple 

 spores, and by its red elaters. In A, californica the inflorescence 

 is dioicous, the pseudoperianth is white, and the spores and elaters 

 are yellow. The remaining species of the Pacific Coast, although 

 all monoicous, are considerably smaller than A. Lindenbergiana^ 

 and in two of them. A, violacca (Aust.) Underw. and A. Bolaiideri 

 (Aust.) Underw., the aiflorescences both male and female are 

 borne on short ventral branches. In A. violacea the pseudo- 

 perianth is usually violet, but the spores and elaters are yellow, 

 becoming brownish with age ; in A, Bolanderi the pseudoperianth 

 is white and the spores and elaters are yellowish brown. Three 

 other species, A. fragfans (Schleich.) Trevis., A. gracilis (Web. f.) 

 Underw., and A. Pal me ri (Aust,) Underw., remain to be considered, 

 all of which agree with A. Lindenbergia7ia in the position of the 

 inflorescences but differ in their white pseudoperianths. A.fragrans 

 is further distinguished by the numerous white appendages of the 

 ventral scales, which project far beyond the margin in the apical 



pilos. 



elaters ; and A. Pal- 



meri^ by the opaque and dark brown spores and yellow elaters. 



Pallavicinia Blyttii (Moerck) Lindb. 

 Jtmgerman7ua Blyttii Moerck; Hornemann, Fl. Dan. 12: 6. //. 



+ 



2004, 1830. 

 Blyttia Morkii Nees ; G. L. & N. Syn. Hep. 474. 1846. 

 Moerckia Blyttii Brockmann, Arch. Ver. Freunde Naturg. Meck- 



lenburgsi7: 190. 1863. 

 Pallavicinia Blyttii Lindb. Not. Sallsk. F. et Fl. Fenn 9 : 17. 



1868. 

 Calyciilaria Blyttii Ste^h. Mem. Herb. Boissier 16: 6. 1900. 



On wet rocks. Near Hume's Glacier, Queets River valley, 

 Olympic Mountains, at an altitude of 5000 feet, Frye (j"^). Para- 

 dise Valley, Mount Ranier, 5000 feet, Flett, New to North 

 America, but widely distributed in Europe in subalpine localities. 



The present species bears a strong resemblance to P. Flotozv- 

 tana (Nees) Lindb., which is now known from several widely scat- 



*Only a few of the synonyms are here given. 



