- Terrell, EE, Revision of Houstonia (Rubiaceae-Hedyotideae), Systematic Botany Monographs vol. 48: 1-118 (1996)
- Tao, C., Taylor, C.M., Flora of China, vol. 19 (Rubiaceae): 147-174 (2011)
Synonymous genera:
- Allaeophania Thwaites (1859)
- Carterella Terrell (1987)
- Dictyospora Hook.f. (0)
- Diplophragma Meisn. (1838)
- Dyctiospora Reinw. ex Korth. (1851)
- Gouldia A. Gray (1860)
- Houstonia L. (1753)
- Kadua Cham. & Schldl. (1829)
- Leptopetalum Hook. & Arn. (1841)
- Metabolos Blume (1826)
- Metabolus auctt. (1830)
- Sclerococcus Bartling (0)
- Scleromitrion Wight & Arn. (1838)
- Stenaria Raf. ex Steud. (1840)
- Symphyllarion Gagnepain (1948)
- Synaptantha Hook.f. (1873)
340484
M. Sessé, M. Mociño, Draw. Roy. Exped. New Spain: [Hunt instutute, Turner collection no. 1489] (1787-1803)
347729
P.F. Fyson, Fl. Nilgiri & Pulney Hill-Tops, vol. 3 : t. 363 (1915-1920)
139353
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 1275 (1783) [Pablo Antonio García del Campo ]
429546
Fl. Dames Genève: t. 500-s1 ()
104177
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 1275 (1783)
104178
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 1276 (1783)
104179
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 1277 (1783)
104180
J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 1278 (1783)
517507-1
Hedyotis articularis R.Br. ex Wight & Arn.
K.M. Matthew, Ill. Fl. Palni Hills: t. 374 (1996)
4825811 497758 Hedyotis costata (Roxb.) Kurz [80 497757 Hedyotis costata R. Br. ex G. Don]
K. Watanabe, Ill. Useful Pl. South. Reg., vol. 2(2): (Edible plants): t. 59, fig. 4 (1945)
1276441 497856 Hedyotis fruticosa L.
J. Burman, Thes. Zeylan.: t. 107 (1737)
3496061 497856 Hedyotis fruticosa L.
J.B.P.A. de Monet de Lamarck, J.L.M. Poiret, Tabl. Encycl., vol. 1 : t. 62, fig. 1 (1791) [Fossier]
350391 497996 Hedyotis lawsoniae Wight
R. Wight, , Icon. Pl. Ind. Orient., vol. 3 : t. 1026 (1846) [Rungia]
865681 497998 Hedyotis lawsoniae Wight & Arn.
R. Wight, Spicil. Neilgherr., vol. 1 : t. 92 (1846) [Rungia]
2361731 537427 Houstonia serpyllifolia Michx.
A. Lounsberry, E. Rowan, Southern wild flowers and trees: p. 474, t. 157 (1901) [E. Rowan]
31122312 537402 Houstonia purpurea L.
B. Maund, Bot. Gard., vol. 8 : t. 171, fig. 3 (1839) [Mills]
23810516 537402 Houstonia purpurea L. [-1-1]
J. Torrey, Fl. New York [coloured version], vol. 1 : t. 44, fig. A (1843) [unsigned]
4286122 1456978 Houstonia mexicana Sessé & Moc.
Fl. Dames Genève: t. 499 ()
3405882 1456978 Houstonia mexicana Sessé & Moc.
M. Sessé, M. Mociño, Draw. Roy. Exped. New Spain: [Hunt instutute, Turner collection no. 1593] (1787-1803)
4295472 1456978 Houstonia mexicana Sessé & Moc.
Fl. Dames Genève: t. 499-s1 ()
3407472 1457155 Hedyotis trichotoma Sessé & Moc.
M. Sessé, M. Mociño, Draw. Roy. Exped. New Spain: [Hunt instutute, Turner collection no. 1752] (1787-1803)
4286132 1457155 Hedyotis trichotoma Sessé & Moc.
Fl. Dames Genève: t. 500 ()
284372 497531 Hedyotis acutangula Champ. ex Benth.
B.C. Seemann, Bot. Voy. Herald: t. 85 (1857)
4048452 497539 Hedyotis albonerva Beddome
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 3 (1874) [Govindoo]
350382 497564 Hedyotis articularis R. Br. ex G. Don
R. Wight, , Icon. Pl. Ind. Orient., vol. 3 : t. 1028 (1846) [Rungia]
4048432 497632 Hedyotis buxifolia Beddome
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 1 (1874) [Govindoo]
4816512 497660 Hedyotis capitellata Wall. ex G. Don
K. Watanabe, Ill. Useful Pl. South. Reg., vol. 1 (Medicinal plants): t. 18 (1944)
4822362 497660 Hedyotis capitellata Wall. ex G. Don
K. Watanabe, Ill. Useful Pl. South. Reg., vol. 2(2): (Edible plants): t. 60 (1945)
3728272 497696 Hedyotis cheniana R.J.Wang
Novon, vol. 18 : p. 265, fig. 1 (2008) [Han-Ping Yu]
4048442 497926 Hedyotis hirsutissima Beddome
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 2 (1874) [Govindoo]
1573072 498013 Hedyotis lessertiana Arn.
H. Trimen, Handb. Fl. Ceylon (Atlas): t. 49 (1893-1898) [H. DeAlwis & W. DeAlwis]
4048722 498013 Hedyotis lessertiana Arn.
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 31 (1874) [Govindoo]
293112 498055 Hedyotis macrostegia Stapf
Trans. Linn. Soc. London, ser. 2, vol. 4 : t. 12 (1894) [C.H. Fitch]
4822372 498192 Hedyotis philippensis (Willd. ex Sprengel) Merr. ex C.B.Rob. [80 965289 Spermacoce philippensis Willd. ex Sprengel]
K. Watanabe, Ill. Useful Pl. South. Reg., vol. 2(2): (Edible plants): t. 61 (1945)
293092 498229 Hedyotis protrusa Stapf
Trans. Linn. Soc. London, ser. 2, vol. 4 : t. 12 (1894) [C.H. Fitch]
293102 498237 Hedyotis pulchella Stapf
Trans. Linn. Soc. London, ser. 2, vol. 4 : t. 12 (1894) [C.H. Fitch]
4048492 498264 Hedyotis quinquinervis Thwaites
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 8 (1874) [Govindoo]
4652152 498329 Hedyotis scandens Roxb.
W. Roxburgh, Icones Roxburgianae (India): t. 2176 (1780-1815)
4602192 498329 Hedyotis scandens Roxb.
W. Roxburgh, Icones Roxburgianae (Kew): t. 2176 (1780-1815)
4048482 498459 Hedyotis travancorica Beddome
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 7 (1874) [Govindoo]
4048462 498505 Hedyotis viscida Beddome
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 4 (1874) [Govindoo]
3728282 498520 Hedyotis wuzhishanensis R.J.Wang
Novon, vol. 18 : p. 267, fig. 2 (2008) [Han-Ping Yu]
2788982 498527 Hedyotis yazhouensis F.W.Xing & R.J.Wang
C.Y. Wu, P.H. Raven, Fl. China, vol. 19 : t. 111, fig. 111 () [Wang Ruijiang & Yu Hanping]
74742 537316 Houstonia caerulea L.
W. Curtis, Bot. Mag., vol. 11 : t. 370 (1797) [n.a.]
1777412 537316 Houstonia caerulea L.
M.V. Walcott, N. Amer. Wild Fl., vol. 1 : t. 59 (1925-1927)
4160882 537316 Houstonia caerulea L.
J.E. von Reider, Ann. Blumist., vol. 8(): : t. 183 (1832)
4135442 537316 Houstonia caerulea L.
J.B.P.A. de Monet de Lamarck, J.L.M. Poiret, Tabl. Encycl., vol. 1 : t. 79 (1791) [Fossier]
4171302 537316 Houstonia caerulea L.
P.B.L. Verlot, Pl. Alp., ed. 2: t. 45, fig. 2 (1873)
4921702 537316 Houstonia caerulea L.
L. Trattinnick, Auswahl Gartenpfl., vol. 1 (tt. 1-100): t. 42 (1821)
2064752 537316 Houstonia caerulea L.
Helen Sharp, Water-color Sketches Amer. Pl.: (1888-1910) [Helen Sharp]
4924562 537316 Houstonia caerulea L.
L. Trattinnick (Trattinick), Bot. Album: (1850-1851)
2364572 537316 Houstonia caerulea L.
A. Lounsberry, E. Rowan, A guide to wild flowers: t. 46 (1899) [E. Rowan]
1455952 537316 Houstonia caerulea L.
C.L. Loddiges, Bot. Cab., vol. 10 : t. 950 (1827) [G. Cooke]
1722362 537316 Houstonia caerulea L.
T. Meehan, Native Fl. Ferns U.S., vol. 1 : p. 97, t. 25 (1878-1879)
3212292 537316 Houstonia caerulea L.
E.C. Emburry, American native flowers in their native haunts: t. 3], fig. 2 (1845) [E. Whitefield]
3104892 537316 Houstonia caerulea L.
B. Maund, Bot. Gard., vol. 6 : t. 124, fig. 1 (1835) [E.D. Smith]
4250442 537357 Houstonia longifolia Gaertner
J. Gaertner, Fruct. Sem. Pl., vol. 1 : t. 49 (1788)
100982 537357 Houstonia longifolia Gaertner
W. Curtis, Bot. Mag., vol. 58 [ser. 2, vol. 5]: t. 3099 (1831) [W.J. Hooker]
2064772 537402 Houstonia purpurea L.
Helen Sharp, Water-color Sketches Amer. Pl.: (1888-1910) [Helen Sharp]
603292 537402 Houstonia purpurea L.
C.L. Loddiges, Bot. Cab., vol. 17 : t. 1621 (1830) [G.L. Loddiges]
1155422 537420 Houstonia rubra Cav.
Anales Hist. Nat., vol. 1 : t. 5 (1799) [A.J. Cavanilles]
2410132 537420 Houstonia rubra Cav.
A.J. Cavanilles, Icon. (Cavanilles), vol. 5 : t. 474, fig. 1 (1799) [A.J. Cavanilles]
387872 597362 Leptopetalum mexicanum Hook. & Arn.
W.J. Hooker, G.A.W. Arnott, Bot. Beechey Voy.: t. 61 (1841) [W.J. Hooker]
2301552 990498 Synaptantha tillaeacea (F. Muell.) Hook.f. [80 498455 Hedyotis tillaeacea F. Muell.]
H.E. Baillon, Hist. Pl., vol. 7 : p. 328, fig. 318 (1877) [A. Faguet]
320752 990498 Synaptantha tillaeacea (F. Muell.) Hook.f. [80 498455 Hedyotis tillaeacea F. Muell.]
W.J. Hooker, J.D. Hooker, Icon. Pl., vol. 12 : t. 1146 (1876) [W.H. Fitch]
517508498010
Hedyotis leschenaultiana DC.
K.M. Matthew, Ill. Fl. Palni Hills: t. 375 (1996)
517509498418
Hedyotis swertioides Hook.f.
K.M. Matthew, Ill. Fl. Palni Hills: t. 376 (1996)
4050315 497596 Hedyotis beddomei Hook.f.
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 191 (1874) [Govindoo]
4048715 497770 Hedyotis cyanantha Kurz
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 30 (1874) [Govindoo]
4048765 498389 Hedyotis srilankensis Deb & R.M.Dutta
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 35 (1874) [Govindoo]
4613335 498439 Hedyotis tetrandra (Roxb.) Craib [116 886296 Rondeletia tetrandra Roxb.]
W. Roxburgh, Icones Roxburgianae (Kew): t. 1115 (1780-1815)
4625085 498439 Hedyotis tetrandra (Roxb.) Craib [116 886296 Rondeletia tetrandra Roxb.]
W. Roxburgh, Icones Roxburgianae (India): t. 1115 (1780-1815)
98485 537316 Houstonia caerulea L.
W. Curtis, Bot. Mag., vol. 55 [ser. 2, vol. 2]: t. 2822 (1828) [W.J. Hooker]
2382455 537357 Houstonia longifolia Gaertner
J. Torrey, Fl. New York [coloured version], vol. 1 : t. 44, fig. B (1843) [unsigned]
1228936 497531 Hedyotis acutangula Champ. ex Benth.
H.A. van Rheede tot Drakestein, Hort. Ind. Malab., vol. 4 : t. 57 (1683)
3909656 497742 Hedyotis coronaria (Kurz) Craib [80 497721 Hedyotis connata Hook.f.]
P.H. Lecomte, H. Lecomte, Fl. Indo-Chine, vol. 3 : p. 107, fig. 12.4-6 (1922) [M.lle Vesque]
4048776 498120 Hedyotis neesiana Arn.
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 36 (1874) [Govindoo]
4048476 498230 Hedyotis pruinosa Wight & Arn.
R.H. Beddome, Icon. Pl. Ind. Orient. (Beddome), vol. 1 : t. 6 (1874) [Govindoo]
1649616 537316 Houstonia caerulea L.
S.L. Endlicher, Iconogr. Gen. Pl.: t. 89 (1837-1838) [A. Putterlick]
2064766 537411 Houstonia pusilla Schoepf
Helen Sharp, Water-color Sketches Amer. Pl.: (1888-1910) [Helen Sharp]
3716886 537439 Houstonia terrellii (Lorence) Terrell & H.Rob. [125 498438 Hedyotis terrellii Lorence]
Novon, vol. 7 : p. 50, fig. 3 (1997) [A. Asquith]
3920986 573551 Kadua cordata Cham. & Schltdl.
Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur., vol. 19(Suppl. 1): : t. 9 (1757-1839)
881196 573560 Kadua coriacea (Sm.) W.L.Wagner & Lorence [125 497739 Hedyotis coriacea Sm.]
C. Gaudichaud-Beaupré, Voy. Uranie, Atlas: t. 94 (1826)
1014366 573564 Kadua fluviatilis C.N.Forbes
O. Degener, Fl. Hawaiiensis (Illustrations): (1932)
3718466 573565 Kadua flynnii (W.L.Wagner & Lorence) W.L.Wagner & Lorence [125 497845 Hedyotis flynnii W.L.Wagner & Lorence]
Novon, vol. 8 : p. 312, fig. 1 (1998) [A. Asquith]
3082756 663747 Metabolos decipiens (Thwaites) Ridsdale [125 38617 Allaeophania decipiens Thwaites]
H. Wawra von Fernsee, Itin. Princ. S. Coburgi, vol. 1 : t. 39, fig. C (1883) [W. Liepoldt]
1573066 663747 Metabolos decipiens (Thwaites) Ridsdale [125 38617 Allaeophania decipiens Thwaites]
H. Trimen, Handb. Fl. Ceylon (Atlas): t. 48 (1893-1898) [H. DeAlwis & W. DeAlwis]
10143562 573551 Kadua cordata Cham. & Schltdl.
O. Degener, Fl. Hawaiiensis (Illustrations): (1932)
517523924583
Hedyotis neesiana Arn.
[Oldenlandia nitida (Kurz) Gamble]
K.M. Matthew, Ill. Fl. Palni Hills: t. 390 (1996)
86569xx 498010 Hedyotis leschenaultiana DC.
R. Wight, Spicil. Neilgherr., vol. 1 : t. 93 (1846) [Rungia]
35042xx 498010 Hedyotis leschenaultiana DC.
R. Wight, , Icon. Pl. Ind. Orient., vol. 3 : t. 1027 (1846) [Rungia]
