Belongs within: Florideophycidae.Contains: Hapalidiaceae, Corallinoideae, Lithophylloideae. The Corallinales, coralline algae, are a group of red algae characterised by a calcified thallus and the production of reproductive structures in conceptacles. Coral: it’s not just an animal thing Published 1 September 2008 Coral reefs form the world’s most renowned tropical marine habitat, and are some of the… Continue reading Corallinales
Category: Rhodophyta
Florideophycidae
Belongs within: Rhodophyta.Contains: Nemaliophycidae, Corallinales, Ceramiales, Gracilariales, Plocamiaceae, Halymeniales, Rhodymeniales, Nemastomatales, Gigartinales, Gelidiales. The Florideophycidae are a clade of multicellular red algae that ancestrally exhibit a triphasic life cycle (Adl et al. 2019). Little discs of doom Published 7 June 2007 Okay, total hyperbole in the title, but I wanted to get your attention. Today… Continue reading Florideophycidae
Lithophylloideae
Belongs within: Corallinales. The Lithophylloideae are coralline red algae in which cells of adjacent vegetative filaments are joined by secondary pit connections (Bailey 1999). A coralline joint Published 21 March 2023 Classification of the coralline red algae has historically swirled around a central conflict. On a superficial level, the corallines can be readily divided between… Continue reading Lithophylloideae
Hapalidiaceae
Belongs within: Corallinales. The Hapalidiaceae are coralline red algae with tetrasporangia/bisporangia borne in conceptacles, producing apical plugs, developing beneath multiporate plates but not borne individually within calcified sporangial compartments, and producing zonately arranged spores (Harvey et al. 2003). <==Hapalidiaceae |–Choreonema [Choreonematoideae]HB03 | `–C. thureti (Born) Schmitz 1889L27 |–AustrolithoideaeHB03 | |–AustrolithonHB03 | `–BoreolithonHB03 `–Melobesioideae [Nulliporeae]HB03 |… Continue reading Hapalidiaceae
Nemaliales
Belongs within: Nemaliophycidae. The Nemaliales are a group of red algae possessing erect, multiaxial thalli. Characters (from Flora of South Australia): Thallus of gametophyte and occasionally sporophyte erect, 1–30 cm high, usually much branched irregularly or subdichotomously, branches terete to compressed, multiaxial with a filamentous medulla (occasionally becoming hollow) and an anticlinal filamentous or pseudoparenchymatous… Continue reading Nemaliales
Palmariales
Belongs within: Nemaliophycidae. The Palmariales are a group of red algae characterised by the lack of carposporophytes and the presence of a stalk cell in developing tetrasporangia. Palmariales |–Rhodophysema [Rhodophysemataceae]HS02 | |–R. elegansHS02 | `–R. odonthaliaeL10 |–Camontagnea [Rhodothamniellaceae]HS02 | `–C. oxycladaMS02 `–PalmariaceaeHB03 |–Halosaccion glandiforme (Gmelin) Ruprecht 1851S57 |–Meiodiscus spetsbergensisHB03 `–PalmariaMS02 |–P. decipiensGW97 |–P. palmataMS02 `–P.… Continue reading Palmariales
Ceramiales
Belongs within: Florideophycidae.Contains: Dasyaceae, Delesseriaceae, Sarcomeniaceae, Rhodomelaceae, Ceramium, Callithamnion, Ptilota, Griffithsia, Antithamnion. The Ceramiales are an order of red algae exhibiting uniaxial growth, bipolar spore germination and triphasic life histories with the auxiliary cell usually cut off from the supporting cell of the carpogonial branch after fertilisation (Choi et al. 2002). <==Ceramiales | i. s.:… Continue reading Ceramiales
Delesseriaceae
Belongs within: Ceramiales.Contains: Schizoserideae, Cryptopleureae, Phycodryeae, Myriogrammeae, Nitophyllum, Delesserieae, Membranoptereae, Hypoglossum. The Delesseriaceae are mostly foliose red algae with blades forming wings of tissue constructed of laterally coherent, apically growing filaments or as a result of diffuse marginal growth. They are divided between Delesserioideae, in which procarps are borne along the primary axial row, and… Continue reading Delesseriaceae
Dasyaceae
Belongs within: Ceramiales. The Dasyaceae are a family of red algae exhibiting cellulosympodial growth and bearing whorled tetrasporangia in stichidia on determinal laterals (Choi et al. 2002). Characters (from Choi et al. 2002): Growth cellulosympodial; tetrasporangia whorled, borne in stichidia on determinal laterals; pigmented pseudolaterals present, Y-shaped cell abutments at pseudodichotomies; trichoblasts absent; carposporophyte with… Continue reading Dasyaceae
Schizoserideae
Belongs within: Delesseriaceae. The Schizoserideae are delesseriaceous red algae in which carpospores are supported by a candelabra-shaped fusion cell, and growing sections of the thallus have nuclei arranged in a single plane (Hommersand & Fredericq 1997). Carpospores in chains Published 24 August 2009 Despite being the most speciose clade of multicellular marine algae, I must… Continue reading Schizoserideae