Ottelia

Accepted species 23 Documented here 5 Family Hydrocharitaceae

Accepted species 23 in this genus

Every accepted species in the genus is listed. A name links to its page when we hold at least three commercially licensed photographs of it. Where we do not, the row shows how many we actually found, which is usually none.

SpeciesAuthority Usable photographsPage
Ottelia ovalifolia (R.Br.) Rich. 48 documented
Ottelia ulvifolia (Planch.) Walp. 32 documented
Ottelia alismoides (L.) Pers. 14 documented
Ottelia muricata (C.H.Wright) Dandy 11 documented
Ottelia kunenensis (Gürke) Dandy 9 documented
Ottelia exserta (Ridl.) Dandy 2 below the evidence gate
Ottelia acuminata (Gagnep.) Dandy 0 below the evidence gate
Ottelia balansae (Gagnep.) Dandy 0 below the evidence gate
Ottelia brachyphylla (Gürke) Dandy 0 below the evidence gate
Ottelia brasiliensis (Planch.) Walp. 0 below the evidence gate
Ottelia cordata (Wall.) Dandy 0 below the evidence gate
Ottelia cylindrica (T.C.E.Fr.) Dandy 0 below the evidence gate
Ottelia emersa Z.C.Zhao & R.L.Luo 0 below the evidence gate
Ottelia fengshanensis Z.Z.Li, S.Wu & Q.F.Wang 0 below the evidence gate
Ottelia fischeri (Gürke) Dandy 0 below the evidence gate
Ottelia guanyangensis Z.Z.Li, Q.F.Wang & S.Wu 0 below the evidence gate
Ottelia lisowskii Symoens 0 below the evidence gate
Ottelia mesenterium (Hallier f.) Hartog 0 below the evidence gate
Ottelia obtusifolia T.C.E.Fr. 0 below the evidence gate
Ottelia profundecordata Symoens 0 below the evidence gate
Ottelia scabra Baker 0 below the evidence gate
Ottelia songmingensis (Z.T.Jiang, H.Li & Z.L.Dao) Zhi Z.Li, Q.F.Wang & Jin M.Chen 0 below the evidence gate
Ottelia verdickii Gürke 0 below the evidence gate

Why some species have no pagethe gate

This site is commercial, so it can only publish photographs licensed for commercial use. Roughly three quarters of the photographs on iNaturalist are CC BY-NC, which excludes them. A species needs at least three usable photographs before we will build it a page, because a page with one picture and no traits tells you nothing you could not get from a search result, and generating hundreds of thousands of those is precisely the practice that got the previous version of this site deleted.

So the species above without a link are not errors and they are not omissions. They are real, accepted plants that we cannot yet document to the standard we hold ourselves to, and the count in the photographs column is exactly how far short we fall.

Sourcesevery claim on this page

  1. World Flora Online Plant List. Accepted names, authorities, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. Photograph counts, restricted to CC0 / CC BY / CC BY-SA. Retrieved 2026-06-27.