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511.0000 Family Acanthaceae Juss.; Gen. Pl. [Jussieu] 102 (1789) (´Acanthi´), nom. cons.
ca. 192 genera, ca. 5500 spp. Phylogeny: Manzitto-Tripp et al. 2022
Species listed in database: 5554
= Avicenniaceae Miq.; Pl. Preiss. [J.G.C.Lehmann] 1: 353 (1845), nom. cons.
= Justiciaceae Raf.; Fl. Tellur. 4: 60 (1838)
= Mendonciaceae Bremek.; Proc. Kon. Ned. Akad. Wetensch. C 56: 540 (1954)
= Meyeniaceae Sreem.; Phytologia 37: 412 (1977)
= Nelsoniaceae (Nees) Sreem.; Phytologia 37: 412 (1977)
= Thunbergiaceae Lilja; Skånes Fl., ed. 2: 979 (1870)
511.4121 Genus Stenandriopsis S.Moore; J. Bot. 44: 153 (1906)
Distribution: Tropical Africa, Madagascar
Species listed in database: 22
= Achyrocalyx Benoist; Bull. Soc. Bot. France 76: 1036 (1929 publ. 1930)
species :
Stenandriopsis afromontana (Mildbr.) Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 236 (1943)
Distribution: Tanzania
25 TAN
Synonyms: hidden
= Crossandra afromontana Mildbr.; Notizbl. Bot. Gart. Berlin-Dahlem 11: 822 (1933)
= Stenandrium afromontanum (Mildbr.) Vollesen; Kew Bull. 47(2): 189 (1992)
species :
Stenandriopsis amoena Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 233 (1943)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium amoenum (Benoist) Vollesen; Kew Bull. 47(2): 196 (1992)
= Stenandriopsis amoena var. catatii Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 234 (1943)
species :
Stenandriopsis boivinii (Baill. ex Lindau) Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 235 (1943)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Crossandra boivinii S.Moore; J. Bot. 44: 152 (1906)
= Stenandrium boivinii (S.Moore) Vollesen; Kew Bull. 47(2): 191 (1992)
= Stenandrium boivinii Baill. ex Lindau; Nat. Pflanzenfam. [Engler & Prantl] IV, 3b: 321 (1895)
species :
Stenandriopsis buntingii (S.Moore) Heine; Fl. Gabon 13: 99 (1966)
Distribution: Sierra Leone; Liberia; Ivory Coast
22 IVO LBR SIE
Synonyms: hidden
= Crossandra buntingii S.Moore; J. Bot. 49: 321 (1911)
= Stenandrium buntingii (S.Moore) Vollesen; Kew Bull. 47(2): 179 (1992)
species :
Stenandriopsis carduacea Benoist; Notul. Syst. (Paris) 8: 151 (1939)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium carduaceum (Benoist) Vollesen; Kew Bull. 47(2): 194 (1992)
species :
Stenandriopsis darainensis I.Darbysh. & Callm.; Kew Bull. 80(1): 155 (2025)
Distribution: Madagascar
29 MDG
species :
Stenandriopsis decaryi (Benoist) T.F.Daniel, McDade & Kiel; Taxon 71(1): 143 (2022)
Distribution: S-Madagascar (Toliara)
29 MDG
Synonyms: hidden
= Achyrocalyx decaryi Benoist; Bull. Soc. Bot. France 76: 1037 (1929 publ. 1930)
= Achyrocalyx vicinus Benoist; Notul. Syst. (Paris) 8: 153 (1939)
species :
Stenandriopsis gabonica (Benoist) Heine; Fl. Gabon 13: 101 (1966)
Distribution: Gabon; Angola
23 GAB 26 ANG
Synonyms: hidden
= Crossandra gossweileri S.Moore; J. Bot. 67: 270 (1929)
= Crossandra gabonica Benoist; Bull. Soc. Bot. France 74: 671 (1927 publ. 1928)
= Stenandrium gabonicum (Benoist) Vollesen; Kew Bull. 47(2): 189 (1992)
species :
Stenandriopsis gossypina (Benoist) T.F.Daniel, McDade & Kiel; Taxon 71(1): 144 (2022)
Distribution: SW-Madagascar (Toliara)
29 MDG
Synonyms: hidden
= Achyrocalyx gossypinus Benoist; Notul. Syst. (Paris) 8: 154 (1939)
species :
Stenandriopsis grandiflora (Vollesen) T.F.Daniel, McDade & Kiel; Taxon 71(1): 144 (2022)
Distribution: Tanzania
25 TAN
Synonyms: hidden
= Stenandrium grandiflorum Vollesen; Kew Bull. 55(4): 967 (2000)
species :
Stenandriopsis guineensis (Nees) Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 235 (1943)
Distribution: Guinea; Sierra Leone; Liberia; Ivory Coast; Ghana; Togo; Nigeria; Cameroon; Bioko Isl. [Fernando Poo]; Gabon; Congo [Brazzaville]; D.R.Congo [Zaire]; Rwanda; South Sudan; Uganda; Angola
22 GHA GUI IVO LBR NGA SIE TOG 23 BIO CMN CON GAB RWA ZAI 24 SSU 25 UGA 26 ANG
Synonyms: hidden
= Crossandra elatior S.Moore; Cat. Pl. Oban [Rendle et al.] 79 (1913)
= Crossandra guineensis Nees; Prodr. [A.P. de Candolle] 11: 281 (1847)
= Stenandrium guineense (Nees) Vollesen; Kew Bull. 47(2): 182 (1992)
species :
Stenandriopsis keraudrenae Benoist; Bull. Soc. Bot. France 110: 399 (1964)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandriopsis humilis Benoist; Notul. Syst. (Paris) 8: 152 (1939)
= Stenandrium humile (Benoist) Vollesen; Kew Bull. 47(2): 195 (1992)
species :
Stenandriopsis leptostachys Benoist; Notul. Syst. (Paris) 8: 152 (1939)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium leptostachys (Benoist) Vollesen; Kew Bull. 47(2): 198 (1992)
species :
Stenandriopsis longifolia (Benoist) I.Darbysh. & Callm.; Kew Bull. 80(1): 157 (2025)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandriopsis leptostachys var. longifolia Benoist; Notul. Syst. (Paris) 8: 153 (1939)
= Stenandrium longifolium (Benoist) Vollesen; Kew Bull. 47(2): 199 (1992)
species :
Stenandriopsis pauciflora (Vollesen) T.F.Daniel, McDade & Kiel; Taxon 71(1): 144 (2022)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium pauciflorum Vollesen; Kew Bull. 47(2): 201 (1992)
species :
Stenandriopsis perrieri Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 234 (1943)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium perrieri (Benoist) Vollesen; Kew Bull. 47(2): 197 (1992)
species :
Stenandriopsis pungens (Benoist) T.F.Daniel, McDade & Kiel; Taxon 71(1): 144 (2022)
Distribution: SW-Madagascar (Toliara)
29 MDG
Synonyms: hidden
= Achyrocalyx pungens Benoist; Notul. Syst. (Paris) 12: 11 (1945)
species :
Stenandriopsis subdentata Benoist; Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 233 (1943)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium subdentatum (Benoist) Vollesen; Kew Bull. 47(2): 194 (1992)
species :
Stenandriopsis talbotii (S.Moore) Heine; Fl. Gabon 13: 105 (1966)
Distribution: S-Nigeria; Cameroon; Bioko Isl. [Fernando Poo]; Gabon
22 NGA 23 BIO CMN GAB
Synonyms: hidden
= Crossandra talbotii S.Moore; Cat. Pl. Oban [Rendle et al.] 78 (1913)
= Stenandrium talbotii (S.Moore) Vollesen; Kew Bull. 47(2): 186 (1992)
species :
Stenandriopsis thomensis (Milne-Redh.) Heine; Fl. Gabon 13: 99 (1966)
Distribution: Cameroon; Principe Isl.; São Tomé
23 CMN PRI SAO
Conservation Status: IUCN EN (Cameroon)
Synonyms: hidden
= Crossandra thomensis Milne-Redh.; Bull. Misc. Inform. Kew 1935: 280 (1935)
= Stenandrium thomense (Milne-Redh.) Vollesen; Kew Bull. 47(2): 187 (1992)
species :
Stenandriopsis thompsonii S.Moore; J. Bot. 44: 154 (1906)
Distribution: Madagascar
29 MDG
Synonyms: hidden
= Stenandrium thompsonii (S.Moore) Vollesen; Kew Bull. 47(2): 193 (1992)
species :
Stenandriopsis warneckei (S.Moore) Hopper; Kew Bull. 24: 342 (1970)
Distribution: Tanzania
25 TAN
Synonyms: hidden
= Crossandra usambarensis Mildbr.; Notizbl. Bot. Gart. Berlin-Dahlem 11: 63 (1930)
= Crossandra warneckii S.Moore; J. Bot. 51: 214 (1913)
= Stenandrium warneckei (S.Moore) Vollesen; Kew Bull. 47(2): 188 (1992)
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A complete, synonymic checklist of the Higher Plants of the World


Version 26.03 (March 30th, 2026)

Covering 359,184 accepted species,
8,882 hybrids, 47,737 accepted infraspecific taxa and 1,007,635 synonyms,
in total 1,423,438* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]


With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life