KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:o 5. 69 
vegetation agrees with that of the Greenland and the Kara Seas. Thus the whole of 
that considerable region of the Arctic Sea, which is composed of the Greenland, the 
Murman, the White, and the Kara Seas, and probably the Spitzbergen Sea, would 
constitute one division of the arctic Flora, agreeing in the principal characters of its 
vegetation. Spitzbergen being situated almost at its centre, this province of the arctic 
Flora may be called the province of Spitzbergen, its marine Flora the Spitzbergen ma- 
rine Flora. The Flora of the Siberian Sea resembles the preceding in many respects. 
The majority of the elements are the same, but most of the predominating species, 
i. e., the Laminariacew, are specifically different from those of the province of Spitz- 
bergen and of the remaining part of the arctic region. From this reason, the Siberian 
Sea ought to be regarded as a separate province of the arctic Flora. I propose for it 
the name of the Stbertan province. The marine vegetation of Baffin Bay, to which the 
Flora of the American Arctic Sea seems to approach nearly, is still more isolated. It 
possesses a considerable number of elements wanting in the rest of the arctic Flora; its 
characteristic species are partly different, and one of them belongs to a generic type 
that is not represented at all in the Floras of the other provinces. This province may 
be properly named the American. 
The following tables afford a survey of the composition of the marine Flora 
within the Arctic region regarded as a whole, and within those three provinces: 
TaBLE I. The species of the arctic Flora and the outlines of their distribution. 
° ° > 
| =) = I _ mS =) | - i] 
= — a =| = = ee 
GelEs ge lee me |\Selyelyelroliys 
me |Sa/Seles| ss os |22| 28/28/28 
soleoclSs Biles | es cole B)/eSis¢8 
S2/ssSlsaler( ee |$s3.) 28 1s sera] cs 
ms | Ps |P a1 oo @ ms | Ses oe lS 
Sie |e alin (Buln g8/ 5/ 8| 8] 3s 
Corallinacez. Tull Spongiocarpee. 
Corallina officinalis __............... Geek] Weer tees + ? Polyides: rotundus.....2.2.-:-..-:-- a ae ecco | ee + |...--- | 
| 
Lithothamnion glaciale._....._____. Se eee laced Reed hee : 
Wrangeliacez. 
» flavescens ...___.__- motor eel | phe NG Silica 
fi eetidate +. eile ‘eo oe Chantransia efflorescens.......... | oa ees eee | + |...-... | 
- Gonettonid 2 ep eaten eee ieee » Secundata...2.. 2.-.22.. el ee eee eel eee | 
» olymorphum -._. | -.---- 
: : si : sd hea es. eat Delesseriacez. 
Lithophyllum areticum _........... pes i =faiby [beeen eon 
b Lenowbanai 1... ot eee ee ata Sea Delesseria rostrata ...........2...... eerste een Se eee 
Metalesia Lejolisit cb sob is bps I, ee rere rae Re eet Perec ge Fae hice 
» COLYIM'DOSA eee ec ee eee + |..-... es 
Rhodomelacez. ) Montagnei .............. | semis es | eomanetne + + |...... 
; 
Odonthalia dentata__............_... +;);+;)4+ + -f ; vex tat aes see 25 2 5 1% a5 a5 
Rhodomela lycopodioides.......... 4 Si nd ee a ge Nithophyllum punctatum —........) 20002} 22... + | + |-...-..- 
» IE fyb ina os Aes et Ieee ene sip? || octet ar Hildbrandtiacee. 
Polysiphonia late aeee ee ? : : 
olysiphonia urceolata a a feo a ae y Hildbrandtia rosea .................- it [ee ed Kee + {1ct 
» elonp ata mal ne Padi | ee fe sia eeeeee | 
» fastigiata ............ + fo. + | + ? Squamariacez. 
» arctica =). eee Se i eee ee ee Peyssonnelia Dubyi ...........-..... (Pe-erea (peeeee 
) ) 
» atrorubescens____._- a ee end | de of ? Cruoria: pellitar:c2c-2----. 1-2 - Rocke ey eee +} + 
” MIgrescens! 2. =... -ssc- Sea (ere + | + | + | Hemescharia polygyna............. | 222... is and Ree ee pagal! sere 
