142 KJELLMAN, THE ALGvE OF THE AKCTIC SEA. 



Gen. Cruora (Fr.) J. G. Ag. 



Sp. Alg. 2, p. 490; Fr, Fl. Scan. p. 316; lira. mul. 



Cruoria pellita (Lyngb.) Fk. 



1. c. p. 317. Chfetophora pellita Lyngb. Hydr. Dan. p. 193. 

 Descv. Cruoria pellita J. G. Ac. 1. c. p. 491. 

 Fi(]. » I) Tiiuu. in Le Jol. Liste A.lg. Cherb. t. 4. 



Exsicc. » » Aresch. Alg. Scand. exsicc. N:o 309. 



Habitat. The present species, like the preceding one, is u literal alga, at least in 

 the Norwegian Polar Sea, attached to stones. Only sterile specimens have been met 

 with. These were collected in summer. The plant probably here, as on the Avest coast 

 of Sweden, develops its reproductive organs in winter. About the habitat of the plant 

 in Baffin Bay I know nothing. 



Geogr. Distrib. It belongs both to the Atlantic and the arctic region of the Polar 

 Sea, being only little spread in both. It cannot be determined, by means of existing 

 statements, how far it goes northwards. 



Localities: The Nonoegian Polar Sea: Nordlanden, commonly dispersed, but scanty. 



Baffin Bay: on the west coast of Greenland, according to specimens in the Royal 

 Swedish Museum, brought home by Prof. Th. M, Fries. 



Gen. Hsemescharia nob. 



Frondes depresso-hemisphsericie in ciustam mucosam contluentes, duobus stratis contextce, inferiore tenui 

 tills decumbentibus, superiore iilis verlicalibus miico uberiore laxius eonjunctis constante. Fila verticalia triplicis 

 generis: l:o longiora et teiiuiora vegetativa, 2:o longiora et teiiuiora trichogynas vulgo plures portantia, 3:o 

 breviora et crassiora partes delinitas frondis formantia, quorum articuli, foecundatione peracta, singuli sporam 

 singulara generant. 



Ha^mescharia polygyna nob. 

 H. frondibus minutis, purpureo-sanguineis. 

 Tab. 11. 



Description. The plant forms small, flattened-hemispherical, gelatinous masses, 

 which are confluent so as to constitute a crust of about one centimeter in diameter. It 

 consists of a horizontal, feebly developed basal layer composed of cellular filaments 

 connected with one another by a gelatinous substance, and of a thickening layer, that 

 issues from this basal layer and consists of vertical rows of cells held together by a 

 profusion of gelatine and easily separated in pressing. These rows are generally simple 

 and vary in different parts of the frond, being sometimes comparatively long (about 

 250 fi.) and slender (6 — 8 n.), composed of numerous, 15 — 20, cylindrical cells, which 

 are even twice as long as thick. I believe these cell-rows to be vegetative; fig. 1, 3. 

 In other parts of the frond several of the vertical cell-rows exhibit the appearance 

 shown by fig. 7 and 8, i. e. from the terminal cell or the articular cells there issues 



