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Batrachospermum (Rhodophyceae)

Batrachospermum keratophytum
Attached to submerged log, No Bottom Bog, Dover NH USA

Batrachospermum keratophytum
Attached to submerged log, No Bottom Bog, Dover NH USA. View of the branching pattern .

Batrachospermum keratophytum
Attached to submerged log, No Bottom Bog, Dover NH USA.
Batrachospermum thalli may be blue-green, gray, olive, or deep red

Batrachospermum keratophytum
Multiseriate filament is evident, with whorled branches.
Attached to submerged log, No Bottom Bog, Dover NH USA.

Batrachospermum keratophytum
Attached to submerged log, No Bottom Bog, Dover NH USA.

Batrachospermum keratophytum
Attached to submerged log, No Bottom Bog, Dover NH USA.

Batrachospermum moniliforme
Photo by Pavel Škaloud posted online

Batrachospermum sp.
Photograph posted online

Batrachospermum sp.
Photo by Stanislav Vosolsobĕ posted online

Batrachospermum sp.
Photograph posted online

Batrachospermum vagum
Photo by Wim van Egmond/Visuals Unlimited, Inc. posted online

Batrachospermum sp.
Photo by Johanna Knappe, Philipps-Universitat Marburg DE posted online

Batrachospermum sp.
Photograph posted online

Batrachospermum sp.
Photo by Jason Oyadomari, Michigan Technical University, Houghton MI USA posted online

Batrachospermum sp.
Photo posted at protist.i.hosei.ac.jp

Batrachospermum life cycle. Tripartite, typical of florideophycean reds. Carposporophyte and tetrasporophyte are diploid. Meiosis produces haploid tetraspores that germinate into haploid female or male gametophytes. Fusion of spermatia with egg cell (carpogonium) forms zygote that germinates into diploid carposporophyte.

Sketch from Maria Aleksandrovny Tololobovoy, Rumania, posted online

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