256 



well as multicellular rhizoids have also been found, and even if 

 the above-mentioned Rhizoclonium partly resembles this, yet it seems 

 to me to differ so much from it that it cannot be referred to it. 



Order XXIII. VAUCHERIACEÆ. 



317. Vaucheria pachyderma Walz. 



This species seems to be rather common in the Færoes. 



The specimens from the Færoes are very near to the variety 

 islandica described by me (Bot. Tidsskrift Bind 22, p. 137), though 

 they are considerably smaller. 



Long. oospor. = 150 !a\ lat. oospor. =: 139 n. 



Specimens were found on Nolso; Nordredal (Str.); and Tran- 

 gisvaag (S yd. I 



Lyngbye found this species and mentions it under name of 

 V. DiUivijnii in Hydrophyt. p. 77, tab. 21, but as he liere only writes: 

 »Habitat in umbrosis terrestribus sat frequens« and does not parti- 

 cularly mention the Færoes as its habitat Rostrup and Wille have 

 not included this species in their list. In Lyngbye's Herbarium 

 specimens are found from Thorshavn (Str.); Eldevig (Ost.); and 

 Sumbo (Syd.). 



True Vaucheria sessilis corrcsponding to Walz and Hans Gotz's descriptions 

 (Flora 1897) I have not seen in the collections 1 have examined. 



318. V. hamata (Vauch.) Lyngb. 

 H. Gotz 1. c. p. 109, fig. 31. 



Næs (Ost.). 



319. V. coponata Nordst. 

 Midvaag (Vaago). 



Lyngbye's V. aquatica in Hydrophyt. p. 79 with regard to which 

 he writes: »Ad Gasterosteum aculeatum in lacu subalpino prope 

 Næs Osteroe Færoæ emortuum ipse vidi«, is as Walz has already 

 pointed out a Saprolegniacea. 



Order XXIV. CHARACEÆ. ^ 



320. Chara fragilis Desv. subspec. delicatula (Ag.) f. verrucosa Itzigs. 

 Rostrup (Fær. Fl. p. 72) calls this species Chara fragilis formå 



capillacea. 



Found in watercourses and bog pools on Sando; Nolso; and 

 Hove (Syd.); and reported by Rostrup from Sando; and from tårns 

 on Hesto. 



^ Determ. O. Nordstedt. 



