1892. Comparison of the Hepatic Floras. 309 
Pleurozia and Scalia. - All the genera of boreal Ameria are 
European 
9. The following genera common to Europe and America 
have not yet appeared in the N. Asiatic flora: - Aitonia, 
Anthoceros, Fossombronia, Herberta, Hygrobiella, Jubula, 
Liochlaena, Marsupella, Pallavicinia and Pleuroclada. 
10. The following comparisons of some of the larger genera 
are further illustrative: 
EUROPE. AMERICA. ASIA. COMMON TO 
oS CO OOO OO n— ee 
ath eae A mc eee ake: oe 
eee 
Haare Rees ee SED Layer Zl teen et 
Ge ah OR aint oe ae eerie 2 ne ge nas 
Be Brg oe Se ies aie 
S 8 S988 ey ere oe 
NB aah > ieee = Veen Yeetre spomeaes «cs, <Nee ea D oleae: ae 
eal Feta ee has fue Maes aire Rane ee AT, 
iccia 26 y 152202: 6795.55. AO TS ee 
Fimbriaria Yee ae ey ee ee Si Delo oy 
Anth 52 eo AZO oe EE ott Ss 
Aneura Te 2 6k ete ee eS ee 
Cephalozia 27 ASE AR ISAS A Ore ee 8 6 
Tullani: 93 4 OE S20 8 oe eer a ee 
Jungermania 93°38. al 43. gt 4729-4 99 OD 
Lejeunea TAPES ei OS. 6B EB aes Veep ees 
Marsupella 20s 1S 25 AG) A ae ee 
Nardia * 12 4 7 8 5 4 I say 4 I si 
Plagiochila Pe 3 fe) 7 4 re) 2 — I 3 I 2 
Porella . ‘ oa be 6 Ore ee ae Stee 
Radula . Wo: S46 Fete ee ee 
Scapania 26 tr 161g Oe 6 
_ Ul. The iwice species are circumpolar, inhabiting Amer- 
ica, Asia and Eur rope. 
Riccia bifurca. Anthelia —— 
“hommagors Arnellia Fennic 
nese Bazzania trilobata 
Blasia “ silla. 
Asterella b hernisphaerica. lepharostoma le — 
Snocephalus Seng Cephalozia bi as - ae ~~ 
Fimbriaria fragrans 
3 ilosa. ae 
Grimaldia silos eee 
tfrons.) 
Marchantia polymorpha Chiloscyphu eer si 
Preissia hemisphaerica Diplophyllum taxifolium 
Aneura latif Frullania di 
Geocalyx graveolen: 
pinguis. Gymnomitrium ccraliotiiek: 
1 
only ate Pe hei ican genera of lower latitudes Cryptomitrium and nee 
her laria, Targionia am 
Xo ogether with Sphaerocarpus, Dumortiera, Lunu 
Stothylas from lower latitudes 
