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Electronic Flora of South Australia Genus Fact Sheet
Phylum Rhodophyta – Class Florideophyceae – Order Gigartinales – Family Cystocloniaceae
Thallus irregularly radially or marginally branched, older branches compressed or flat; holdfast fibrous or discoid. Structure uniaxial, the axial filament conspicuous or not, each axial cell with one or two periaxial cells; medulla slight, without rhizoidal filaments, cortex pseudoparenchymatous with ovoid cells, outer cells small and forming rosettes in some species.
Reproduction: Sexual thalli dioecious; procarpic. Carpogonial branches 3-celled, borne laterally on mid cortical cells, with the auxiliary cell adjacent outwardly to the supporting cell, becoming (with adjacent cells) darkly staining, with a small-celled nutritive tissue produced inwardly; carposporophyte with basal cells but without a fusion cell, with radiating gonimoblast filaments bearing terminal chains of carposporangia together with a few sterile filaments passing to the pericarp. Cystocarps in smaller terete branches, protuberant, with a cellular pericarp, non-ostiolate. Spermatangia scattered, cut off via initials from outer cortical cells.
Tetrasporangia scattered in the outer cortex, zonately divided.
Life history triphasic with isomorphic gametophytes and tetrasporophytes.
Lectotype species: C. ciliata (Hudson) Kützing 1843: 403.
Taxonomic notes: A genus of 4 or 5 species, the type and C. jubata (Goodenough & Woodward) Kützing from the British Isles and Europe, with other species from South Africa and southern Australia.
Calliblepharis differs from other genera of the family in lacking a fusion cell, in having cystocarps in smaller terete branches (not marginal) and in weakly defined rosettes.
The type species has not been studied in detail, and knowledge of the genus is largely based on Kylin's (1928, p. 72, figs 46–49) study of C. jubata.
References:
KÜTZING, F.T. (1843). Phycologia generalis. (Leipzig.)
KYLIN, H. (1928). Entwicklungsgeschichtliche Florideen Studien. Lunds Univ. Årsskr. N.F. Avd. 2, 24 (4), 1–127.
The Marine Benthic Flora of Southern Australia Part IIIA complete list of references.
Publication:
Womersley, H.B.S. (14 January, 1994)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIA, Bangiophyceae and Florideophyceae (to Gigartinales)
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIIA 1994, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.
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