Myxopliycese, Scytonemaceae, Hydrocoryne. 557 



steis deficientia pseudoramorum et heterocystarum tribuenda. Ex 

 icone cl. Hassallii, trichomata torulosa, intra vaginas late expansas 

 nidulantia, Aulosireas in mentem reddunt, color phycocyani Sti- 

 gonemaceas. 



33. Tolypothrix implexa Mart. in Proceed. of the As. Soc. Bengal 1870, 1295 

 p. 183. 



34. Tolypothrix mexicana Kuetz. in Bot. Zeit. 1863, p. 8. 1296 



35. Tolypothrix nivea Hassall Hist. of Brit. freshw. I, pag. 241, 1297 

 t. 69, f. 6. — Filamentis subtilissimis, albis, rigidis, stratum conti- 

 nnum, pallide luteuin constituentibus. 



Hab. in fontibus sulphuratis Anglise (Willan, Backhouse). — 

 Est verisiinilllme Bacteriacea e Cladotrichum genere. 



36. Tolypothrix thermalis Kuetz. Phyc. gen. p. 228. 1298 



37. Tolypothrix rhenana Schmidle in Ptoyers Beitr. z. Algenti. der 1299 

 Berg. Landes p. 83 aptius sub Plectonemate servanda. 



Species excludendse 



38. Tolypothrix Dillwynii Hass. = Desmonema Wrangelii B. et. F. 



39. — extensa Crouan = Symploca sp. 



40. — fuscescens Breb. = Hapalosiphon pumilus Kirchn. 



41. — guadeloupensis Crouan = Scytonema coactile Montagn. 



42. — pumila Moug. et Nestl. = Chlorophycea. 



43. — pumila Kuetz. Phyc. gen. p. 227, Sp. p. 313, Tab. Phyc. 



II, t. 31, f. II = Hapalosiphon pumilus Kirchii. 



44. — rhizomatoidea Reinsch = Hap. pimiilus Kirchn. 



45. — tenuis Desm. non auct. = Symploca sp. 



46. Hassallia compacta Hass. = Stigonema sp. 



47. — ocellata Hass. = Stig. ocellatum Thur. 



48. — turfosa Hass. = Stig. turfaceum Cooke. 



HYDROCORYNE Schwabe [1827] in Spreng. Syst. veg. IV, pars I, 

 p. 314 (Etym. hyclor aqua et coryne clava), Born. et Flah. Rev. III, • 

 pag. 83, Calotrichis, Schizotrichis, Symphyosiphonis, Cystocolei, 

 Hilsem sp. auct. — Frondes irregulariter divisae; fila s;iepius plura 

 in vagina cominuni vitrea inclusa. Heterocyst;e intercalares. Sporae 

 oblongae vel ellipsoideae. 



Ohs. PIant;i3 aquaticae more epiphyticae, rarius libere natantes. 



1. Hydrocoryne spongiosa Schwabe in Spreng. Syst. veg. IV, pars I, 1.300 



