Characeae of Britain and Ireland

The Characeae or stoneworts are a family of green algae. This is a partial list of species found in Britain and Ireland.

British Isles
Ref: Stewart & Church (1992).
 * Chara baltica Bruz.
 * Chara canescens Desv. & Lois.
 * Chara connivens Salzm. ex A.Braun
 * Chara curta Nolta ex Kütz. (=C. aspera var. curta)
 * Chara denudata (A.Braun) R.D.Wood
 * Chara fragifera Durieu
 * Chara intermedia Braun (=C. papillosa Kütz. and C. contraria x hispida)
 * Chara mucosa J.Groves & Bullock-Webster
 * Chara rudis (A.Braun) Leonh.
 * Chara tomentosa L.
 * Lamprothamnium papulosum (Wallr.) J.Groves
 * Nitella capillaris (Krocker) J.Groves & Bullock-Webster
 * Nitella gracilis (Smith) Agardh
 * Nitella hyalina (DC.)Agardh
 * Nitella mucronata (A.Braun)Miquel
 * Nitella spanioclema J.Groves & Bullock-Webster (Nitella flexilis var. spanioclema (J.Groves & Bullock-Webster) )
 * Nitella tenuissima (Desv.) Kütz.
 * Nitellopsis obtusa (Desv.) J.Groves
 * Tolypella intricata (Trent. ex Roth) Leonh.
 * Tolypella nidifica (O.F.Müll.) Leonh. (=Tolypella nidifica var. nidifica)
 * Tolypella prolifera (Ziz. ex A.Braun) Leonh.

Ireland

 * County Antrim
 * Chara aspera var. aspera
 * Chara globularis var. globularis
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Chara globularis var. virgata (Kützing) R.D.Wood
 * Chara vulgaris var. vulgaris
 * Chara vulgaris var. contraria (A.Braun ex Kützing) J.A. Moore
 * Chara vulgaris var. longibracteata (Kützing) J. Groves & Bullock-Webster
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Nitella flexilis var. flexilis
 * Nitella translucens (Pers.) C.A. Ag.
 * Tolypella nidifica var. glomerata (Desv.) R.D.Wood
 * County Down
 * Chara aspera var. aspera
 * Chara aspera var. curta (Nolte ex Kützing) Braun ex Leonh.
 * Chara globularis var. globularis
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Chara globularis var. virgata (Kützing) R.D.Wood
 * Chara globularis var. annulata (Lilleblad) J.A.Moore
 * Chara hispida L.
 * Chara hispida var. hispida
 * Chara hispida var. major (Hartm.) R.D. Wood
 * Chara hispida var. rudis A. Braun
 * Chara pedunculata Kützing
 * Chara vulgaris var. vulgaris
 * Chara vulgaris var. contraria (A.Braun ex Kützing) J.A. Moore
 * Chara vulgaris var. longibracteata (Kützing) J. Groves & Bullock-Webster
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Nitella flexilis var. flexilis
 * Nitella translucens (Pers) C.A. Ag.
 * Tolypella nidifica var. glomerata (Desv.) R.D.Wood
 * County Londonderry
 * Chara aspera Deth. ex Willd. var. aspera
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Chara globularis var. globularis
 * Chara globularis var. virgata (Kützing) R.D.Wood
 * Chara hispida L.
 * Chara hispida var. hispida
 * Chara vulgaris var. vulgaris
 * Chara vulgaris var. contraria (A.Braun ex Kützing) J.A. Moore
 * Chara vulgaris var. papillata Wallr. ex A. Braun
 * Nitella flexilis var. flexilis
 * Nitella translucens (Pers) C.A. Ag.
 * Tolypella nidifica var. glomerata (Desv.) R.D.Wood
 * County Mayo.Recent records have been published from Clare Island.
 * Chara virgata Kützing
 * Nitella flexilis (Linnaeus) C.Agardh
 * Nitella translucens (Persoon) C.Agardh