Seite 24 - Carolinea 68

24 carolinea, 68 (2010)
ma visitabiliter distincta a centroplasma, valide
aeruginosa.
Locus typicus: Breg flumen (Danuvii fluv. flumen
fontanum dextrum) ad oppidum Hüfingen (Do-
naueschingen), Germania.
Habitatio: Endolithice in lapidibus calcariis loca-
tis in aquis fluentibus.
Holotypus: Materia deposita in herbario ‘Bota-
nischer Garten und Botanisches Museum Ber-
lin, Germania, sub num.: B 40 0040626.
Iconotypus: Figura nostra 21, sub num.: B 40
0040628.
Etymologia: Nomen deductum a propietate in-
gredi in materias calcareas.
Filaments straight, up to 300 µm long, 3,5-4,5 µm
wide, penetrating limestones in the bed of rivers
perpendicular to the surface, in great amounts
densely arranged and in ±parallel, building up an
approximately 0,5 mm thick thallus in the peri­
pheral rock matrix looking like an inversed lawn
or a brush. Sheaths thin, firm, hyaline, not lamel-
lated, not stainable with chlorine-zinc-iodine-so-
lution. Trichomes (2,2) 2,9-3,7 (4,4) µm wide, at
the crosswalls not constricted, not or only slight-
ly granulated, at the ends not attenuat­ed. Cells
isodiametric or – depending on the dividing pro­
cess – somewhat shorter or longer than wide,
(2,2) 2,9-4,7 (5) µm long. Apical cells rounded or
obtuse conical, without calyptra; within the cells
the stronger blue-green coloured peripheral
chromatoplasma clearly distinct from the paler
centroplasma.
Acknowledgements
The author thanks the University of Karlsruhe for car-
rying out the SEM procedures, Prof. Dr. Friedrich,
Krefeld, and Prof. Dr. Steinberg, Berlin, for procuring
comparative samples, Dr. Bertling and G. Schrei ­
ber,
Geological Museum of the University of Muenster for
mineralogical classifications of rock samples, and Dr.
A. Gutowski, Bremen, for helpful discussions.
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