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Protozoa: Mycetozoa: Protosteliomycetes: Ceratiomyxales: Ceratiomyxaceae: Ceratiomyxa fruticulosa (O.F.Müll.) T.Macbr., 1899

Ceratiomyxa fruticulosa – Coral slime mold

Synonyms: Byssus fruticulosa, Ceratiomyxa arbuscula, Ceratiomyxa caesia, Ceratiomyxa descendens, Ceratiomyxa freyana, Ceratiomyxa hydnoidea, Ceratiomyxa mucida, Ceratiomyxa plumosa, Ceratiomyxa porioides, Ceratium arbuscula, Ceratium aureum, Ceratium crustosum, Ceratium filiforme, Ceratium fuscum, Ceratium hydnoideum, Ceratium mucidum, Ceratium porioides, Ceratium pyxidatum, Ceratium roseum, Ceratium rubicundum, Ceratium sphaeroideum, Clavaria byssoides, Clavaria puccinia, Corynoides byssoides, Famintzinia fruticulosa, Famintzinia porioides, Isaria mucida, Puccinia byssoides, Tremella hydnoidea.

Common name: coral slime mold.

Russian name: Tseratiomiksa kustarnichkovaya.

Extract from Wikipedia article: Ceratiomyxa is a genus of plasmodial slime mould within the Eumycetozoa, first described by Pier Antonio Micheli. They are widely distributed and commonly found on decaying wood.

AI-generated description

Ceratiomyxa fruticulosa is a species of slime mold that belongs to the class Myxomycetes. It is characterized by its unique fruiting bodies, which are upright, branched, and resemble tiny trees. In St. Petersburg, Leningrad Oblast, and north-western Russia, Ceratiomyxa fruticulosa has been found in moist, shaded areas with rich soil and abundant organic matter, such as forests, woodlands, and swamps. The species typically fruits on decaying logs, stumps, and other woody debris, often in association with mosses and liverworts. It is considered a relatively rare species in the region, but can be locally common in suitable habitats.

Photos of this mushroom from the area of St. Petersburg, Russia

Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) in Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2016-08-09.htm">August 9, 2016</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) in Dibuny, north-west from Saint Petersburg, Russia, August 9, 2016
Location on mapsUnnamed Road, g. Sankt-Peterburg, Russia, 197758
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) on a log in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-29.htm">June 29, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) on a log in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
Location on mapsSevernyy pr., 26, Sankt-Peterburg, Russia, 194295
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) on rotten wood in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) on rotten wood in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) on a stump in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) on a stump in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsSvetlanovskiy pr., 55, Sankt-Peterburg, Russia, 194064
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsSvetlanovskiy pr., 55-57, Sankt-Peterburg, Russia, 194064
Coral slime mold <B>Ceratiomyxa fruticulosa</B> var. porioides among dry birch leaves in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkCoral slime mold Ceratiomyxa fruticulosa var. porioides among dry birch leaves in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsTikhoretskiy pr., 25к1, Sankt-Peterburg, Russia, 195427
Dried coral slime mold <B>Ceratiomyxa fruticulosa</B> var. porioides on a stump in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkDried coral slime mold Ceratiomyxa fruticulosa var. porioides on a stump in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsTikhoretskiy pr., 25к1, Sankt-Peterburg, Russia, 195427
Yellowish coral slime mold <B>Ceratiomyxa fruticulosa</B> var. porioides in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkYellowish coral slime mold Ceratiomyxa fruticulosa var. porioides in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsTikhoretskiy pr., 25к1, Sankt-Peterburg, Russia, 195427
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-14.htm">July 14, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) near Lisiy Nos, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-18.htm">July 18, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) near Lisiy Nos, west from Saint Petersburg. Russia, July 18, 2017
Location on mapsPrimorskoye sh., 16, Lisiy Nos, Sankt-Peterburg, Russia, 197755
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) with pellia liverwort (Pellia epiphylla) near Lisiy Nos, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-18.htm">July 18, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) with pellia liverwort (Pellia epiphylla) near Lisiy Nos, west from Saint Petersburg. Russia, July 18, 2017
Location on mapsPrimorskoye sh., 16, Lisiy Nos, Sankt-Peterburg, Russia, 197755
Yellowish coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) near Lisiy Nos, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-18.htm">July 18, 2017</A>
LinkYellowish coral slime mold (Ceratiomyxa fruticulosa var. porioides) near Lisiy Nos, west from Saint Petersburg. Russia, July 18, 2017
Location on mapsPrimorskoye sh., 16, Lisiy Nos, Sankt-Peterburg, Russia, 197755
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-19.htm">July 19, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Close up of coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-19.htm">July 19, 2017</A>
LinkClose up of coral slime mold (Ceratiomyxa fruticulosa var. porioides) in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) on buried wood in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-19.htm">July 19, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) on buried wood in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) on a stump in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-22.htm">July 22, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) on a stump in Sosnovka Park. Saint Petersburg, Russia, July 22, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Yellowish coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) on a stump in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-22.htm">July 22, 2017</A>
LinkYellowish coral slime mold (Ceratiomyxa fruticulosa var. porioides) on a stump in Sosnovka Park. Saint Petersburg, Russia, July 22, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) in Kuzmolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-26.htm">July 26, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) in Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188663
Young coral slime mold (<B>Ceratiomyxa fruticulosa</B>) in Kuzmolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-26.htm">July 26, 2017</A>
LinkYoung coral slime mold (Ceratiomyxa fruticulosa) in Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188663
Immature coral slime mold (<B>Ceratiomyxa fruticulosa</B>) in Kuzmolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-26.htm">July 26, 2017</A>
LinkImmature coral slime mold (Ceratiomyxa fruticulosa) in Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188663
Coral slime mold <B>Ceratiomyxa fruticulosa</B> var. porioides on an old railroad path near Kuzmolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-26.htm">July 26, 2017</A>
LinkCoral slime mold Ceratiomyxa fruticulosa var. porioides on an old railroad path near Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188663
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) in Petiayarvi, 50 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-30.htm">August 30, 2017</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188732
Close up of coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) in Petiayarvi, 50 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-30.htm">August 30, 2017</A>
LinkClose up of coral slime mold (Ceratiomyxa fruticulosa var. porioides) in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188732
Coral slime mold (<B>Ceratiomyxa fruticulosa</B> var. porioides) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2018-09-03.htm">September 3, 2018</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa var. porioides) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
Location on mapsLeninskaya Tropa, Sankt-Peterburg, Russia, 197758
Coral slime mold (<B>Ceratiomyxa fruticulosa</B>) on a wet log in lower Sergievka Park. Old Peterhof, west from Saint Petersburg, Russia, <A HREF="../date-en/2021-05-19.htm">May 19, 2021</A>
LinkCoral slime mold (Ceratiomyxa fruticulosa) on a wet log in lower Sergievka Park. Old Peterhof, west from Saint Petersburg, Russia, May 19, 2021
Location on mapsPetergof, St Petersburg, Russia

AI-generated summary of observations

The coral slime mold Ceratiomyxa fruticulosa was observed in Leningrad Oblast and north-western Russia between 2016 and 2021. The majority of sightings were in Sosnovka Park, Saint Petersburg, with multiple observations on logs, stumps, and among dry leaves. The species was also found near Kavgolovskoe Lake, Lisiy Nos, and in other areas north and west of Saint Petersburg. Various forms of the species were observed, including Ceratiomyxa fruticulosa var. porioides, which was often yellowish in color. The slime mold was typically found on rotten wood or in moist environments. Observations were made during summer and early fall, with some sightings as early as May and as late as September. The frequency of observations suggests that Ceratiomyxa fruticulosa is relatively common in the region.

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Links

Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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