水莧菜屬（學名：_Ammannia_）是千屈菜科下的一個屬，為一年生草本植物。該屬共有約 30 種，分布於全球。



下屬物種

本屬包括以下物種：


* _Ammannia aegpytiaca_ Willd.

* _Ammannia alata_ (Immelman) S.A.Graham & Gandhi

* _Ammannia alternifolia_ H.Perrier

* _Ammannia anagalloides_ Sond.

* _Ammannia andongensis_ (Welw. ex Hiern) S.A.Graham & Gandhi

* _Ammannia angolensis_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia angustifolia_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia arenria_ H.B.K.

* _Ammannia arnhemica_ (F.Muell.) S.A.Graham & Gandhi

* _Ammannia aspera_ Guill. & Perr.

* 耳葉水莧菜 _Ammannia auriculata_ Willd.

* _Ammannia aurita_ (Koehne) S.A.Graham & Gandhi

* 水莧菜 _Ammannia baccifera_ L.

* _Ammannia baumii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia bequaertii_ (De Wild.) S.A.Graham & Gandhi

* _Ammannia brevistyla_ S.A.Graham & Gandhi

* _Ammannia burttii_ (Verdc.) S.A.Graham & Gandhi

* _Ammannia calcicola_ (H.Perrier) S.A.Graham & Gandhi

* _Ammannia capitellata_ (C.Presl) S.A.Graham & Gandhi

* _Ammannia cinerea_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* 長葉水莧菜 _Ammannia coccinea_ Rottb.

* _Ammannia cordata_ Wight & Arn.

* _Ammannia crassicaulis_ Guill. & Perr.

* _Ammannia crinipes_ F.Muell.

* _Ammannia cryptantha_ Baker

* _Ammannia cymosa_ (Immelman) S.A.Graham & Gandhi

* _Ammannia desertorum_ Blatt. & Hallb.

* _Ammannia dichotoma_ (Blume) S.G.Panigrahi

* _Ammannia dinteri_ (Koehne) S.A.Graham & Gandhi

* _Ammannia dodecandra_ DC.

* _Ammannia drummondii_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia elata_ A.Fern.

* _Ammannia engleri_ (Koehne) S.A.Graham & Gandhi

* _Ammannia erecta_ (Guill. & Perr.) S.A.Graham & Gandhi

* _Ammannia fernandesiana_ S.A.Graham & Gandhi

* _Ammannia fitzgeraldii_ R.L.Barrett

* _Ammannia fruticosa_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia garciae_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia gazensis_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia gracilis_ Guill. & Perr.

* _Ammannia grayi_ S.A.Graham & Gandhi

* _Ammannia heptamera_ (Hiern) S.A.Graham & Gandhi

* _Ammannia herbacea_ W.J.de Wilde & Duyfjes

* _Ammannia heterophylla_ (H.Perrier) S.A.Graham & Gandhi

* _Ammannia icosandra_ (Kotschy & Peyr.) S.A.Graham & Gandhi

* _Ammannia illecebroides_ Arn. ex Koehne, 1880

* _Ammannia incarnata_ J.Koenig ex Rottb.

* _Ammannia involucrata_ S.A.Graham & Gandhi

* _Ammannia kilimandscharica_ (Koehne) S.A.Graham & Gandhi

* _Ammannia lakensis_ Chandler, 1962

* _Ammannia lanceolata_ B.Heyne ex Wall.

* _Ammannia latifolia_ L.

* _Ammannia linearipetala_ A.Fern. & Diniz

* _Ammannia linearis_ (Hiern) S.A.Graham & Gandhi

* _Ammannia linifolia_ (Welw. ex Hiern) S.A.Graham & Gandhi

* _Ammannia loandensis_ Welw. ex Hiern

* _Ammannia luederitzii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia lythroides_ (Welw. ex Hiern) S.A.Graham & Gandhi

* _Ammannia madagascariensis_ Boivin ex Tul.

* _Ammannia maritima_ (Aubl.) S.A.Graham, P.W.Inglis & T.B.Cavalc.

* _Ammannia maxima_ (Koehne) S.A.Graham & Gandhi

* _Ammannia minima_ (Immelman) S.A.Graham & Gandhi

* _Ammannia moggii_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia mossambicensis_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia muelleri_ (Hewson) S.A.Graham & Gandhi

* 澤水莧 _Ammannia myriophylloides_ Dunn

* _Ammannia nagpurensis_ T.Mathew & M.P.Nayar

* _Ammannia octandra_ L.fil.

* _Ammannia palmeri_ (S.A.Graham) S.A.Graham & Gandhi

* _Ammannia parkeri_ (Verdc.) S.A.Graham & Gandhi

* _Ammannia parvula_ S.A.Graham & Gandhi

* _Ammannia passerinoides_ Welw. ex Hiern

* _Ammannia patentinervius_ (Koehne) S.A.Graham, P.W.Inglis & T.B.Cavalc.

* _Ammannia pauciramosa_ S.A.Graham & Gandhi

* _Ammannia pedicellata_ (Hiern) S.A.Graham & Gandhi

* _Ammannia pedroi_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia petrensis_ (M.G.Gilbert & Thulin) S.A.Graham & Gandhi

* _Ammannia pinnatifida_ L.f.

* _Ammannia polycephala_ (Peter) S.A.Graham & Gandhi

* _Ammannia praetermissa_ (Kasselm.) Kasselm.

* _Ammannia prieureana_ Guill. & Per.

* _Ammannia prieuriana_ Guill. & Perr.

* _Ammannia pringlei_ (Rose) S.A.Graham & Gandhi

* _Ammannia prostrata_ Buch.-Ham. ex Dillwyn

* _Ammannia pubescens_ (Koehne) S.A.Graham & Gandhi

* _Ammannia pubiflora_ (Koehne) Hewson

* _Ammannia purpurascens_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia pygmaea_ A.Chev.

* _Ammannia quadriciliata_ H.Perrier

* _Ammannia radicans_ (Guill. & Perr.) S.A.Graham & Gandhi

* _Ammannia ramosissima_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia rautanenii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia rigidula_ (Sond.) S.A.Graham & Gandhi

* _Ammannia robertsii_ (F.Muell.) S.A.Graham & Gandhi

* _Ammannia robinsoniana_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia robusta_ Heer ex Regel

* _Ammannia rotundifolia_ Buch.-Ham., 1825

* _Ammannia rubra_ Buch.-Ham., 1825

* _Ammannia sagittifolia_ (Sond.) S.A.Graham & Gandhi

* _Ammannia saluta_ (Immelman) S.A.Graham & Gandhi

* _Ammannia santoi_ (A.Fern. & Diniz) S.A.Graham & Gandhi

* _Ammannia sarcophylla_ Welw. ex Hiern

* _Ammannia schaeferi_ Koehne ex Engl.

* _Ammannia schinzii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia schlechteri_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia senegalensis_ Lam.

* _Ammannia spathulata_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia striatiflora_ (Hewson) S.A.Graham & Gandhi

* _Ammannia stuhlmannii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia teixeirae_ (A.Fern.) S.A.Graham & Gandhi

* _Ammannia tolypobotrys_ (Koehne) S.A.Graham & Gandhi

* _Ammannia uniflora_ Meijden

* _Ammannia urceolata_ Hiern

* _Ammannia volkensii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia wardii_ (Immelman) S.A.Graham & Gandhi

* _Ammannia woodii_ (Koehne) S.A.Graham & Gandhi

* _Ammannia zambatidis_ (Immelman) S.A.Graham & Gandhi

歸入本屬的物種：


* _Nesaea frutescens_ A.Chev.

* _Nesaea jaegeri_ Koehne ex Engl.

* _Nesaea rainosa_ A.Fern.

* _Nesaea robertsii_ F.Muell.

* _Nesaea schoenfelderii_ Dinter



參考文獻