Petalidium

Accepted species 45 Documented here 5 Family Acanthaceae

Accepted species 45 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
Petalidium lucens Oberm. 35 documented
Petalidium aromaticum Oberm. 8 documented
Petalidium oblongifolium C.B.Clarke 8 documented
Petalidium setosum C.B.Clarke ex Schinz 8 documented
Petalidium variabile (Engl.) C.B.Clarke 3 documented
Petalidium canescens (Engl.) C.B.Clarke 1 below the evidence gate
Petalidium coccineum S.Moore 1 below the evidence gate
Petalidium angustitubum P.G.Mey. 0 below the evidence gate
Petalidium barlerioides (B.Heyne ex Roth) Nees 0 below the evidence gate
Petalidium bracteatum Oberm. 0 below the evidence gate
Petalidium cirrhiferum S.Moore 0 below the evidence gate
Petalidium crispum A.Meeuse ex P.G.Mey. 0 below the evidence gate
Petalidium currorii S.Moore 0 below the evidence gate
Petalidium cymbiforme Schinz 0 below the evidence gate
Petalidium elatum Benoist 0 below the evidence gate
Petalidium englerianum (Schinz) C.B.Clarke 0 below the evidence gate
Petalidium engoense Swanepoel & A.E.van Wyk 0 below the evidence gate
Petalidium giessii P.G.Mey. 0 below the evidence gate
Petalidium glandulosum S.Moore 0 below the evidence gate
Petalidium gossweileri S.Moore 0 below the evidence gate
Petalidium halimoides (Nees) S.Moore 0 below the evidence gate
Petalidium hoarusibense Swanepoel & A.E.van Wyk 0 below the evidence gate
Petalidium huillense C.B.Clarke 0 below the evidence gate
Petalidium kaokoense Swanepoel 0 below the evidence gate
Petalidium lanatum (Engl.) C.B.Clarke 0 below the evidence gate
Petalidium lepidagathis S.Moore 0 below the evidence gate
Petalidium linifolium T.Anderson 0 below the evidence gate
Petalidium luteoalbum A.Meeuse 0 below the evidence gate
Petalidium mannheimerae Swanepoel, Nanyeni & A.E.van Wyk 0 below the evidence gate
Petalidium microtrichum Benoist 0 below the evidence gate
Petalidium ohopohense P.G.Mey. 0 below the evidence gate
Petalidium parvifolium Schinz 0 below the evidence gate
Petalidium physaloides S.Moore 0 below the evidence gate
Petalidium pilosibracteolatum Merxm. & Hainz 0 below the evidence gate
Petalidium ramulosum Schinz 0 below the evidence gate
Petalidium rautanenii Schinz 0 below the evidence gate
Petalidium rossmannianum P.G.Mey. 0 below the evidence gate
Petalidium rupestre S.Moore 0 below the evidence gate
Petalidium saxatile Swanepoel, K.G.Dexter, E.A.Tripp & A.E.van Wyk 0 below the evidence gate
Petalidium sebrabergense Swanepoel & A.E.van Wyk 0 below the evidence gate
Petalidium sesfonteinense Swanepoel & E.A.Tripp 0 below the evidence gate
Petalidium spiniferum C.B.Clarke 0 below the evidence gate
Petalidium subcrispum P.G.Mey. 0 below the evidence gate
Petalidium tomentosum S.Moore 0 below the evidence gate
Petalidium welwitschii S.Moore 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.