EvANS: REPORT ON THE HEPATICAE OF ALASKA 615 
cumpolar species, a list of the species which are known from 
Europe but not from Asia follows. It is needless to state that 
this list will probably be diminished when the hepatic flora of 
Asia is more fully known. 
Riccardia major Lophozia obtusa 
Pallavicinia Flotowiana Lophocolea cuspidata 
Gymnomitrium crenulatum Cephalozia leucantha 
G. obtusum Bazzania Pearsont 
Nardia compressa Herberta adunca 
N. Geoscyphus Diplophyllum ovatum 
N. obovata Scapania nemorosa 
Jungermannia caespiticia S. uliginosa 
Anastrophyllum Reichardtii | S. umbrosa 
Of the European species occurring in Alaska the following 
belong to the so-called Atlantic species, being restricted in Europe 
to the neighborhood of the Atlantic coast: 
Metzgeria hamata Herberta adunca 
Gymnomitrium crenulatum Pleurozia purpurea 
Bazzania Pearsoni 
The characteristic Pacific coast species occurring in Alaska 
are listed below. All are endemic to North America and several 
are known only from Alaska. 
Gyrothyra Underwoodiana Radula arctica 
; Plagiochila alaskana R. Bolanderi 
P. Fryei R. polyclada 
Lepidozia filamentosa Porella navicularis 
| Ptilidiwm californicum P. Roellii 
. Diplophyllum argenteum Frullania chilcootiensts 
: D. imbricatum F. franciscana 
Scapania Bolanderi F. nisquallensis 
: S. cordifolia 
3 A most surprising feature of the knee: flora of Alaska is the 
group of species which are found also in the Hawaiian Islands. 
Some of these have already been mentioned on the preceding 
pages, but a complete list, as follows, may be of interest: 
Marchantia polymorpha Lepidozia sandvicensis 
Riccardia multifida Diplophyllum albicans 
- Anastrepta orcadensis Pleurozia purpurea 
