369 



Some precisely similar specimens in mv herbarium collected 

 by Lange near Malaga were referred to this species by .1. Agardh. 

 who has determined Lange's collections of Algæ from Spain. 



The Færoese specimens were small, at the most a few cm. in 

 circumference, and sterile. 



Found only on Str. : Kvivig (!). 



DELESSERIA Lamour. 



33. D. alata (Huds.) Lamour. Kjellm., NM. p. 172 (134); Lyngh., 

 1. c. p. 8. 



There occurs along the coasts of the Færoes hoth a rather broad 

 form and a more narrow form like le Jolis's no. 245, but they 

 merge into one another by a series of very closely connected inter- 

 mediate forms. I have not seen specimens referable to D. angn- 

 stissima. 



This species generally occurs in the sublittoral zone, but is 

 also common near low-water mark, especially in rock clefts and 

 in caves, where it mav often be seen at ebb-tide forming extensive 

 coverings on the rocks. It is also met with here and there in 

 tide-pools at low-levels. Between tide -marks the specimens are 

 small, only a few centimetres high, as Kjell man (1. c.) savs is the 

 case also with those growing in similar localities in the north of 

 Norway; but in the sublittoral zone they are much larger, up to 

 about 20 centimetres long. 



It grows both in exposed and sheltered localities on rocky 

 and stony bottoms as well as epiphytic especially on Laminaria 

 hyperborea. 



Tetraspore-bearing specimens occurred in April, May and Oc- 



tober, and cystocarpic in May, June, July (a specimen in Lyng- 



bye's Herbarium), October and November. Kjellman has not 



found fruit-bearing piants in the Arctic regions, but says that in 



Sweden the piants bear tetraspores during winter (December and 



January); and Areschoug says that it bears fruit in Bohuslån in 



March and April. 



This species is very common along the Færoese coasts as already 

 noted by Lyngbye (l.c. p.8), who writes: — »ad Jittora Færoensia copiose«. 

 It was first recorded by Landt, l.c. p. 231. 



34. D. sinuosa (Good. et Woodw.) Lamour. Kjellm., N. I., p. 175 

 (136); Lyngb., 1. c. p. 7. 



A variable plant, the leaves being sometimes almost entire, 



