— 359 — 



Acrorhæte repens Pringsh., Beiträge p. 2, Tab. II; Huber, Chætophor. 

 p. 306. 



This species has only been found in one place growing in Chorda 

 Filum. Fructiferous specimens have been gathered in July. 

 NW. I cel. Arnarfjöröur (Ldbk.). 



Bolbocoleon piliferum Pringsh., Beiträge p. 2, Tab. II; Huber, Chæto- 

 phor. p. 308, pi. 13, fig. 8-12. 



This species occurs in the litoral region, growing in Punctaria, 

 Scytosiphon lomentarius and Phyllitis fascia in company with Streblonema 

 Stilophoræ var. cæspitosa and Myrionemaceæ. Fructiferous specimens 

 have been gathered in July and September. 



E. I c el. Reyöarfjöröur. 



NW. Icel. Skâlholtsvi'k; Lätrarvi'k in Aöalvik (CO.). 



Farn. Mycoideaceæ. 



Ulvella fiicieola Rosenv. Grl. Havalg. p. 926, fig. 40. 



The Icelandic specimens agree entirely with Rosenvinge's description 

 and figures (1. c). It occurs most frequently on Fucus, especially F. in- 

 flatus, but it is also met with on the stem of Laminaria digitata. I have 

 only met with sterile plants. Probably common: 



E. Icel. Noröfjöröur, Brimnes; Seyöisfjöröur (CO.); Borgarfjöröur. 

 N. Icel. Hn'sey. 

 SW. Icel. Reykjavik. 

 S. Icel. Vestmannaeyjar. 



Pringsheimia scutata Rke., Algenflora p. 81, Atlas Taf. 25. 



This species has been found growing on Polysiphonia urceolata, 

 Sphacelaria and Chætopteris plumosa. Fructiferous specimens have been 

 collected in June. It was first found by A. Mörk, growing on Chætopteris 

 plumosa, according to a specimen here at the Botanical Museum, labelled 

 ex Islandia d. A. Mörck. 



NW. Icel. Isafjöröur (C O.). 



SW. Icel. Brimnes; Reykjavik, Njarövfk (CO.). 



Ochlochæte ferox Huber, Chætophor. p. 291, Tab. X; Rosenv. Grl. 

 Havalg. p. 931. f. 41. 



I have only in one place met with this species growing on the 

 branches of Cladophora gracilis. My specimens gathered Septbr. 7 th were 

 fructiferous and had many emptied sporangia. 



NW. Icel. Kolbeinsâ. 



