Myxophyceae 1 1 j 



filaments 15-19 mic. in diameter; trichomes 12.5 mic. in diameter; 

 cells very short L. arachnoidea 



Species not well understood. 



L. bicolor 



L. caeruleo-violacea 



L. fluitans 



L. hyalina 



L. pusilla 



L. rubra 



L. rubro-violacea 



213. Lyngbya mucicola Lemmermann. Plankt. Schwed. Gewass. Ark. for 



Bot. 70. 1904. De Toni. Syll. Algar. 5: 289. 1907. 



Lemmermann. Planktonalg. Ergebnisse einer Reise n. d. Pacific. 335. 

 1899; Algenfl. Sandwich.-Inseln. Bot. Jahrb. 34: 619. 1903. 



Filaments 1.5 mic. in diameter, scattered, epiphytic; trichomes .5 mic. 

 in diameter, cylindrical, not constricted at joints; cells 1.5 mic. in length; 

 transverse walls marked by two strongly refringent granules. 



Hawaii. On Chondrocystic schauinslandii. Laysan. 

 (Schauinsland). 



214. Lyngbya perelegans Lemmermann. Planktonalg. Ergebnisse einer 



Reise n. d. Pacific. 355. 1899. De Toni. Syll. Algar. 5: 289. 1907. 



Lemmermann. Algenfl. Sandwich.-Inseln. Bot. Jahrb. 34: 619. 1905. 



Plant mass epiphytic on marine algae; filaments 1.5-2 mic. in diameter, 

 straight or curved; sheaths very delicate, scarcely visible; cells 2-7 mic. in 

 length, somewhat quadrate or cylindrical; transverse walls marked by two 

 glistening granules. 



Hawaii. On marine algae. Laysan. (Schauinsland). 



215. Lyngbya rivulariarum Gomont. Monogr. Oscill. 168. 1893. De Toni. 



Syll. Algar. 5: 282. 1907. 



Lemmermann. Algenfl. Sandwich.-Inseln. Bot. Jahrb. 34: 620. 1905. 



Filaments very slender, twisted or coiled; sheaths colorless, very thin, 

 papery; trichomes .7-.8 mic. in diarneter, constricted at the joints; apex of 

 trichome not tapering; apical cell rotund; calyptra none; cells 2.3-3.2 mic. 

 in length; transverse walls pellucid; cell contents not granular, pale blue- 

 green. 



Hawaii. In a mass of N o s t o c, in ditches. Between Honolulu and 

 Waikiki, Island of Oahu. (Schauinsland). 



216. Lyngbya lagerheimii (Mobius) Gomont. Essai Class. Nostocacees 



homocystees. Morot. Journ. de Bot. 4: 354. 1890; Monogr. Oscill. 



167. pi. 4. f. 6, 7. 1893. De Toni. Syll. Algar. 5: 287. 1907. 



Collins, Holden and Setchell. Phyc. Bor.-Am. Fasc. 2. no. 53. 1895. 



Setchell. Notes on sofne Cyanophyceae of New England. Bull. Torr. Bot. 



Club. 22: 430. 1895. Collins. Preliminary Lists of New England Plants. 



