98 



MAURICE ClOMOlVT. 



radiantibus compositi. Trichomata siiperne eximie torulosa, 



10 [j. ad 14 [x crassa 3. P. radiosum. 



Csespituli rotundati, Isete virides. Trichomata passim torulosa, 



5 [X ad 10 (ji. crassa 4. P. tenue. 



Cœspites indefîniti, nigro-purpurei. Trichomata eximie toru- 

 losa^ 3 y, crassa 5. P. pwyureum. 



B. Planta? temiissimse, haud cœspitosae. Trichomata i }x ad ^ ii 

 crassa. 



Fila plerumque valde flexuosa, in membraiiam roseolam dense 

 intricata. Trichomata haud torulosa... 6. P. roseolum. 



Fila subrecta, inter varias Algas gelatinosas crescenlia. Tri- 

 chomata pallide luteo-viridia, torulosa. 7. P. Nostocorum. 



Fila subflexuosa, in conchis emortuis immersa. Trichomata 

 dilute œruginea, non torulosa 8. P. terebrans. 



1. P. Wolleî Farlow 



Remarks on some Algse found in the water supplies of the city of Boston, in Bull, 

 of the Bussey Institution, p. 77 (en note), 1875. — Wolle in Wittrock et Norstedt, 

 Algse aq. dulc. exsicc, fasc. VI, n» 279! — Bornet et Thuret, Notes algologiques, 

 fasc. Il, p. 137 ; e specim. authent. in herb. Thuret! 



Lyngbya PALLiDA Zeller, Algse collect. hy Mr. S. Kwz in Arracan and British 

 Burma., in Journal Asiatic Society of Bengal, XLII, part II, p. 178, 1873, et in Ra- 

 benhorst, Algen, n» 2335! 



Lyngbya Wollei Farlow in Rabenhorst, Algen, n» 2440 ! 1876. — Farlow, An- 

 derson and Ealon, Algse exsicc. Americse bor., n° 46! — Wolle, Fresh-water Algx 

 of the United States, p. 297. Pl. CC, fig. G à 8 ; e specim. authent. in herb. 

 Thuret! 



Planche I, fig. 1. 



Frondes caespitosae, fluctuantes, pluripedales, atro- vel 

 rarius pallide luteo-virides. Fila lanosa, intricata, fragilia 

 (in speciminibus siccis), subrecta aut varie curvata, parce 

 pseudo-ramosa, pseudo-ramis solitariis, rarius geminis, obli- 

 que erumpentibus. Vaginaî liyalinse, interdum luteo-aureae, 

 setate provecta lamellosae, ambitu rugosae, ad 10 [x crassae, 

 chlorozincico iodurato non caerulesceutes. Trichomata 

 nigro-aeruginosa, interdum pallide luteo-viridia, ad genicula 

 haud constricta, 28 p. ad 47 ^j. crassa; articuH quater ad- 

 novies diametro trichomatis breviores, 4 ad 9 longi, 

 protoplasmate tenui-granuloso farcti, granulis crassioribus 

 nonnunquam interjectis; dissepimenta haud granulata; cel- 

 lula apicalis rotundata (v. s.). 



