Myxopliycese, Stigonemacese, Capsosira. 591 



24. Siroslphon velutinus Kuetz. in Bot. Zeit. 1847, p. 196. — Strato 1363 

 crustaceo, fusco-uigro, areolato-rimoso; tricliomatibus tlavescenti- 

 bus, erectis, densissimis, mm, 0,5 altis, 10 ]x. crassis, prope apices 

 ramos fasciculatim congestos, abbreviatos, adscendenti-curvatos 

 emittentibus. 



Hab. in saxis arenaceis pr. Heringen, Thuringioe (Wallroth). 



25. Stlgonema bornense Krempelh. Lichenes, quos legit 0. Beccari 1354 

 in ins. Borneo et Sing. in N. G. Bot. it. ! 1875, p. 59. — Fibris tenuis- 

 simis, atris, longis, simplicibus, dense contextis et pulvinos maju 

 sculos (diam. 5 cm. et ultra) rotundatos vel oblongos planiusculos 

 molles efformantibus sterilibus. 



Hab. Borneo et Singapore (Khempelhuber). — Cl. Rabenhorst 

 observat speciem hanc a ceteris tantum differre filamentis simpli- 

 cibus ramis carentibus. 



26. Stlgonema amphiacrogenum Archer in Journ. Dubl. Micr. Chib 1355 

 vol. IV, part I (1880) p. 12. 



Hab. m aquis Hiberniie (Archer). — Species imperfecte de- 

 scripta. 



Species excludendse. 



27. Slrosiphon Bouteillei Breb. et Desm. = Tolypothr. Bouteillei (B. 



et Fl.) Nob. 



28. — Heppii Rab. = Lichen. 



29. — ocellatus Rab. = Scytonema ocellatum Lyngbye. 



30. — scytonematoldes Wood = Dichonema sp. 



31. — silvestris Itzigs. = Lichen sp. 



32. Stlgonema atrovlrens Ag. = Lichen sp. 



33. — interruptum Hass. = Lichen sp. 



34. — pannosum Kuetz. = Lichen sp. 



35. — polyceras Kuetz. = Lichen sp. 



36. — solldum Rab. = forma juvenilis. 



37. — zonothrichoides N. = Capsosira Brebissonii Kuetz. 



CAPSOSIRA Kiitz. [1849] Sp. Alg. p. 344 (Etym. capsa capsula et 

 seira catena), Born. et Flah. Rev. IH, p. 79, Borzi Morf etc. N. 

 G. B. it. XI, p. 378. — Fila lateraHter concreta in frondibus pul- 

 vinatis, hemisphsericis, pagina inferiori adfixis, omnia conformia, 

 erecta, ramosa, e cellularum serie subsimplici composita. Vaginse 

 septatae; heterocystae intercalares et laterales; hormogonia e cel- 



