''Amphiroa'' is a genus of thalloid
red algae
Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority ...
comprising 55 species. Specimens can reach around 30 cm in size. The thalli take a crustose form;
dichotomous branches
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...
are formed. The organisms possess secondary
pit connection In algal anatomy, a pit connection is a hole in the septum between two algal cells, and is found only in the red algae − specifically, all orders except the Porphyridiales and haploid Bangiales. They are often stoppered with proteinaceous "pit p ...
s. ''Amphiroa'' reproduces by means of
conceptacle
Conceptacles are specialized cavities of marine and freshwater algae that contain the reproductive organs. They are situated in the receptacle and open by a small ostiole.Boney, A.D. (1969). ''A Biology of Marine Algae''. Hutchinson Educational L ...
s; it produces tetraspores. Its pore canals are lined with parallel filaments; the morphology of the pore canal is a key trait used to delineate species within the genus.
Species
The valid species currently considered to belong to this genus are:
AlgaeBase
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# '' Amphiroa anastomosans'' Weber Bosse
# '' Amphiroa anceps'' (Lamarck) Decaisne
# '' Amphiroa annobonensis'' Pilger
# '' Amphiroa annulata'' Me.Lemoine
# '' Amphiroa articulata'' (Bory) Athanasiadis
# '' Amphiroa beauvoisii'' J.V.Lamouroux
# '' Amphiroa bowerbankii'' Harvey
# '' Amphiroa brasiliana'' Decaisne
# '' Amphiroa breviarticulata'' Areschoug
# '' Amphiroa canaliculata'' G.Martens
# '' Amphiroa capensis'' Areschoug
# '' Amphiroa compressa'' M.Lemoine
# '' Amphiroa crassa'' J.V.Lamouroux
# '' Amphiroa crosslandii'' M.Lemoine
# '' Amphiroa crustiformis'' E.Y.Dawson
# '' Amphiroa cryptarthrodia'' Zanardini
# '' Amphiroa cumingii'' Montagne
# '' Amphiroa currae'' Ganesan
# '' Amphiroa dimorpha'' Me.Lemoine
# '' Amphiroa echigoensis'' Yendo
# '' Amphiroa ephedraea'' (Lamarck) Decaisne
# '' Amphiroa exilis'' Harvey
# '' Amphiroa foliacea'' J.V.Lamouroux
# '' Amphiroa fragilissima'' (Linnaeus) J.V.Lamouroux
# '' Amphiroa franciscana'' W.R.Taylor
# '' Amphiroa galapagensis'' W.R.Taylor
# '' Amphiroa gracilis'' Harvey
# '' Amphiroa hancockii'' W.R.Taylor
# '' Amphiroa howensis'' A.H.S.Lucas
# '' Amphiroa irregularis'' Kützing
# '' Amphiroa itonoi'' Srimanobhas & Masaki
# '' Amphiroa klochkovana'' A.S.Harvey, W.J.Woelkerling & A.J.K.Millar
# '' Amphiroa kuetzingiana'' Trevisan
# '' Amphiroa magdalenensis'' E.Y.Dawson
# '' Amphiroa maletractata'' Simonsen
# '' Amphiroa minutissima'' W.R.Taylor
# '' Amphiroa misakiensis'' Yendo
# '' Amphiroa nodularia'' (Pallas) Decaisne
# '' Amphiroa nodulosa'' Kützing
# '' Amphiroa pacifica'' Kützing
# '' Amphiroa peruana'' Areschoug ex W.R.Taylor
# '' Amphiroa polymorpha'' M.Lemoine
# '' Amphiroa prefragilissima'' Me.Lemoine
# '' Amphiroa pusilla'' Yendo
# '' Amphiroa rigida'' J.V.Lamouroux
# '' Amphiroa rubra'' (Philippi) Woelkerling
# '' Amphiroa setacea'' Kützing
# '' Amphiroa subcylindrica'' E.Y.Dawson
# '' Amphiroa taylorii'' E.Y.Dawson
# '' Amphiroa tribulus'' (J.Ellis & Solander) J.V.Lamouroux - type
# '' Amphiroa ungulata'' Montagne & Millardet
# '' Amphiroa valonioides'' Yendo
# '' Amphiroa vanbosseae'' Me.Lemoine
# '' Amphiroa yendoi'' Børgesen
# '' Amphiroa yendoi'' De Toni
References
*
External links
Images
of ''Amphiroa'' at Algaebase
Corallinaceae
Red algae genera
{{alga-stub