gestis oircinatim convolutis, indistinote artioulatis, cytioplasmate pallide
luteo - v irid i, homogéneo, v. v.
Diam. V2000— Visoo'" = 0 ,0 0 0 0 4 -0 ,0 0 0 0 5 " .
Hab. inter Phormidia aliasque Oscillarias passim, e. gr. prope
Vindobonam (A. Grunow), prope Pola Istriae (Biasoletto), Asooli Italiae
(Orsini), Vercelli Pedemontii (de Cesati), Salisburgum (Sauter) Cervi-
montiuni Silesiae (de Plotow), ad Augustam Vindelioorum (Caflisch),
Goes Hollandiae (van d. Bosch, specimina misit Suringar), Lögstör
Daniae (Jensen).
0. tenerrima Ktz. (1. c. P. VIII. Rabenh. Alg. N. 329! Ktz.
Alg. exs. sub Ose. uncinata var. N. 122. saltern in specim. meis).
0. solitaria et sparsa vel fasciculatim associata ; triohomatibus strictis,
indistinote a rticu la tis, articulis diametro aequalibus, paulo longioribus
vel duplo brev io rib u s, terminali subacuto, parum inclinato, cytioplasmate
pallide aerugineo vel oliváceo homogéneo vel subtilissime granuloso.
V. V.
Dian). >/i200— ‘/Hoo"' = 0,000068— 0,00009".
b. Articulo terminali recto obtuso, vix attenuato.
Hab. in limo stagnorum, fossarum, in .plantis rejeotamentisque
putridis submersis per totam Europam, ubique fere vulgaris.
0. Kützingiana Nägeli (in Ktz. Spec. p. 238.) diff. ab antecedente
tantum articulis diametro longioribus, ejusdem forma esse videtur.
Hab. in rupibus madidis, passim. Specimina e pluribus locis europaeis
vidi et ipse iegi.
0. detersa Stiz. (in Eabenh. Alg. N. 1730.). 0 . strato diffuso
verniceo rubido - oliváceo ; trichomatibus' dense in tric atis , alaciter oscillantibus
rigidis, leviter ourvatis, dilutissime rufis; articulis diametro
aequalibus vel sesqui-longioribus, apioulo obtusiusoulo, parum curvato, v .s.
Diam. '/io3o'" = 0 ,0 0 0 0 8 7 "; 0,002™- = ' ¡ n ì f indioat ol. Sti-
zenherger.
Hab. in loois humidis umbrosis inter musoos, ad Constanz.
0. leptotrieha Ktz. (1. 0. Eabenh. Alg. N. 161. Suringar obs.
phycol. p. 48.). 0 . solitaria, sparsa vel in stratum tenuissimum aerugineum
aggregata ; trichomatibus subtilissimis leviter ourvatis mobilibus,
indistinote artioulatis, articulis diametro duplo longioribus (vel post d ivisionem
factam diametro aequalibus vel subaequalibus), punctis minutissimis
peripheriois o rn a tis, apioulo a tten u ato , quasi producto recto,
oblique deflexo vel curvato, cytioplasmate pallide aerugineo homogéneo
vel subtiliter granuloso, v. v.
Hab. in fossis, stagnis, laoubus plantarum partes pütridas aliasque
quisquillas obducens, ubique. — In submarinis Angliae (N. YVales)
legit Ealfs (teste Kützingio, specimina non vidi).
0. amphibia Ag. ( in Regensb. „ F lo r a “ 1827. p. 632. N. 81.
Ktz. Alg. exs. sub No. 129.). 0. trichomatibus tenuissimis reotis
strictis in membranulam dilute viridem diffusam, ambitu breviter radiantem
dense in tric atis, apicibus obtusis rectis, motu vivido praeditis,
articulis diametro subaequalibus vel paulo brevioribus, cytioplasmate
homogéneo, dilutissime aerugineo-viridi hyalino. v. v.
Diam. 71200 - '/ o , = 0,00007—0,000098".
Hab. in thermis Carolinis, in loois aqua thermarum adhuo calore
+ 36—44® R. in u n d atis, e. gr. in ponte ligneo, uhi primum detexit
Agardh ; prope Gastein legit Hildebrand.
Species non semper pura, saepe oum aliis hujus generis intermista.
0. elegans Ag. (1. c. N. 33. Ktz. Alg. exs. N. 128!). 0. trichomatibus
tenuissimis strictis vel leviter ourvatis, mobilibus, in strata
plura compacta sibi superimposita laete viridia vel pallide olivacea breviter
radiantia in tric a tis, a rticu la tis, apiculo acuminato subdeclinato ;
articulis diametro a equalibus, ad genicula leviter constrictis, cytioplasmate
subtiliter granuloso vel homogeneo , pallide aerugineo. v. v.
Diam. '/osi — 1/779'" = 0,00009—0,00011".
b. Forma erassior, diam. '/eoo'" = 0,00015".
Hab. in thermis Carolinis Bohemiae, in locis aqua calidissima
superfusis (e. gr. am Sprudelkorbe); prope Gastein (Hildebrand, teste
Grunowio), Baden-Baden (ipse).
0. gracillima Alte. (Phyool. gener. p. 184. Tabul. I. T. 39. F. II.).
0 . triohomatibus gracillimis re c tis , apioem versus cu rvatis, articulatis
in stratum aerugineum leptodermaticum congestis, apiculo subattenuato
obtuso curvo, articulis diametro aequalibus, ad genicula transversim
punctatis, cytioplasmate pallide aerugineo homogeneo. v. v.
Diam. - 1 / 7 0 0 '- = 0 ,0001—0 ,00012".
b. circinata/ f e . (1. c.), forma trichomatibus ad '/eio'" = 0,00013"
crassis, o i r c i n a t im convolutis.
Hab. in th e rm is, neo non in limo stagnorum, fossarum, haud
raro tepidariorum parietes strato membranaceo aerugineo, sioco sub-
nitido obduoens, per totam Europam passim.
Oscillariae amphibiae proxima et fortasse cujus forma paulo erassior
apioulo curvato.
0. chlorina Ktz. (1. c.). 0. triohomatibus sparsis vel fasciculatim
congestis, reotis vel ourvatis , indistincte a rticu la tis, articulis diametro
R a b e n h o r s t , Flora Europaea. II. ']
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