152 Myxopliycese, Oscillatoriege, Oscillatoria. 



(Maze et Sohramm), America bor. (Farlow, Wolle, Collins, Til- 

 DEN, Gardner, Setchell, Bessey). — Cl. Goinont specimina in 

 regioninibus septentrionalibus collecta nunquam scrutatus est, hanc 

 speciem enim regiones calidiores prseferre putat. — forma purpurea 

 Collins Alg. of Jamaica in Proc. of the American Acad. of Arts and 

 Sciences XXXVII, n. 9, p. 239, 1901 et in Phyc. Bor. Amer. 753: 

 trichomatibus et strato la;te purpureis. Jamaica (D,^® Pease et 

 Butler). 

 6. Oscillatoria proboscldea Gomont Monogr. des Oscillariees p. 209, 

 t. VI, f. 10 et 11, Oscillaria prohoscidea Crouan (lapsu!) Gardn. 

 in Coll., Hold. et Setch. Phyc. bor. Amer. n. 1159! Oscillaria 

 Antillarum Crouan in Maze et Schramm Essai de classification 

 des algues de la Guadeloupe p. 17, non Kuetzing, Oscillaria impe- 

 rator Wolle in Rab. Alg. n. 2535, p. p. — Trichomatibus saturate 

 ;i3rugineis in stratum atro-viride conglomeratis vel inter alias 

 Oscillatorias sparsis, rectis aut subflexuosis, passim undulato-spi- 

 ralibus, haud torulosis, 12-15 [i. crassis, apice breviter et eximie 

 attenuato-capitatis, quasi truncatis, uncinatis vel laxe terebrifor- 

 mibus; articulis diametro trichomatis 3-6-plo saepius 4-plo longio- 

 ribus, 2-4 |x. longis, contentu tenuigranuloso farctis ; dissepimentis 

 nunquam granulatis; cellula apicali membranam superne convexam 

 leviter incrassatam praebente. 



Hab. frequenter Osc. principi aliisque speciebus immixta, in 

 M. Kamerun Afric?e (Jungner), America foederata (Wolle, Far- 

 low, Gardner), in ditione Alaskana (Setchell), Antillis (Maze et 

 ScHRAMM, CoLLiNs), iu lacubus Germanioe (Lemmermann), in Anglia 

 (West). — Var. Westll nob., 0. proboscidea Gom. var. G. S. West 

 On some Alg. fr. hot Springs p. 245, f. 28-30: trichomatibus paullo 

 crassioribus ; articulis diam. 2 '/.-S-plo brevioribus, tumidulis, 15,3- 

 18 ]s.. diam., 5,5-7,7 [x. longis. In surgentibus calidis Geyser dictis 

 Islandiio (G. S. West). Oscillatorio3 proboscideas forsan accedit 

 Oscillatoria neglecta Wood Freshw. Alg. of the U. S. p. 20, 

 t. II, f. 5 a-b, Prodr. p. 124 sequenti diagnosi ditata: trichomatibus 

 modice brevibus aut dilute purpureo-plumbeis aut plumbeo-cinereis, 

 plerumque rectis, 15-16 ^. diam., aut stratum mucosum atro-pur- 

 pureum haud distincte radiantem formantibus aut in strato gela- 

 tinoso haud radiante subplumbeo dispersis et cum algis variis 

 intermixtis, rare oscillantibus sed lente sese moventibus; articulis 

 diametro ferc 4-pIo brevioribus; dissepimentis plerumque haud 

 granulosis, rare indistincte granulosis; cellula apicali obtuse ro- 



