408 Myxophycege, Heterocystidese, Nostoc. 



JJie Alg. Deutschl. p. 45, Rab. Deutschl. Krypt. Fl. p. 65, Alg. exs. 

 n. 63! 434! (Pringsh.), Maze Hydroph. de la Guy. francaise pag. 7, 

 Cesati in Erb. critt. it. II, n. 3881: strato pallide aerugineo vel lu- 

 teo-brunneo, translucido; menibrana externa achroa. Passini in 

 Germania (Ivuetzing, Roemer), Bohemia (HANsaiEG), Tyrolia (Han- 

 SGiEG, Dalla Toree, Sarnthein), Italia (Cesati, Malinverni), 

 Gujana (Maze). — Var. kerguelensis (Reinsch), Hormosip/ton co- 

 riaceus Kuetz. var. kergudensis Reinsch Freshw. Alg. from Ker- 

 guelen pag. 210: strato irregulariter expanso, vesicato, subplano, 

 subcoriaceo, colore obscure rubro-fusco, sectione transversali 5-7 

 stratoso; peridermate lamelloso-fusco, superne crassiori ; trichoma- 

 tibus vermiformibus, contortis, ad 4,1 [x. crassis; vaginis fuscis, am- 

 plis, distinctissimis, plurilamellosis; cellulis sphaericis, contentu 

 pallide serugineo. In terra Kerguelensi (Eaton). — Var. siculum 

 Borzi Morf. biol. ficocrom. I p. 284: thallo initio globoso, deinde 

 late tuberculari-expanso, subintegro, undulato-plicato, Itete viridi- 

 caerulescente ; sporis ignotis. In pratis et collibus maritimis prope 

 Messanam. — Var. flagelliforme (Berk. et Curt.) Born. et Flah. Rev. 

 IV, pag. .206, Nostoc flagelliforine Berkeley et Curtis in Wright 

 Planta3 Texanae n. 3809! Berlveley Introduction to cryptog. Botany 

 p. 142, 1857, Harvey Nereis Bor. Americ. III, pag. 115, Farl. An- 

 ders. et Eat. xAlg. exsicc. Americ. bor. n. 100 (fide Bornetiij, Bornet 

 et Thur. Not. Alg. II, pag. 121, Born. et Flah. Rev. IV, p. 206, 

 Nematonostoc rhizomorphoides Nyland. in BuIIet. de la Soc. Bot. 

 de France 1873, XX, p. 263, Dupuy, Soc. Dauph. n. 2719 et bis! 

 (1880), Nostoc commune forma fiagelliformis Flah. in BuII. de 

 la Soc. bot. de France 1883, XXX, p. 89, t. 11, in W. et Nordst. 

 Alg. exs. n. 687! et in H. et R. Phyk. univ. n. 87!: thallo fili- 

 formi, passim usque ad 3-4 millim. elato, firmo; trichomatibus pa- 

 rallelis. In locis aridis Galliie in Pyrenaeis prope Bagneres des Lu- 

 chon (Dupuy), Montpellier (Flahault); in Bohemia (Hansgirg), in 

 Anierica ad San Pedro, Texas (C. Wright), in Africa Austraii 

 ad Smithfield, Orange (Wohlers) nec non in regione Sinensi ad 

 frutices (Okoult). Nostoc commune Vauch. est species edulis, ut 

 nos docuerunt clari Montagne et Lagerheim. Huc pertinet forsan : 

 NosLoc coriaceum Bzi. Morf. e Biol. etc. in N. G. B. It. X, p. 284, 

 nec Vauch. (fide Borneti): thallo initio globoso-lenticulari, deinde 

 disciformi vel irregulariter expanso; trichomatibus vaginis plus 

 minus evanescentibus, cinctis ; articulis sphsericis vel ellipticis di- 

 stantibus aut arcto connexis; sporis ellipticis, olivaceis, granulis 



