Crassula vaillantii(Willd.) Roth

WFO wfo-0000625586 Accepted WFO 2026-06 8 photographs CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Crassula vaillantii, photographed by kevin koen
fig. a kevin koen, CC BY-SA 4.0 / 2021-08-18 / obs. 151805068
Crassula vaillantii, photographed by Tony Rebelo
fig. b Tony Rebelo, CC BY-SA 4.0 / obs. 114318060
Crassula vaillantii, photographed by Tony Rebelo
fig. c Tony Rebelo, CC BY-SA 4.0 / obs. 92484809
Crassula vaillantii, photographed by douglaseustonbrown
fig. d douglaseustonbrown, CC BY-SA 4.0 / obs. 52747769
Crassula vaillantii, photographed by Tony Rebelo
fig. e Tony Rebelo, CC BY-SA 4.0 / obs. 12514814
Crassula vaillantii, photographed by Tony Rebelo
fig. f Tony Rebelo, CC BY-SA 4.0 / obs. 12447892
Crassula vaillantii, photographed by Tony Rebelo
fig. g Tony Rebelo, CC BY-SA 4.0 / obs. 16163080
Crassula vaillantii, photographed by Tony Rebelo
fig. h Tony Rebelo, CC BY-SA 4.0 / obs. 15679895

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 27 botanical countries

Regions where Crassula vaillantii is native: Algeria, Cape Provinces, Free State, KwaZulu-Natal, Lesotho, Libya, Morocco, Northern Provinces, Tunisia, Cyprus, Kazakhstan, Lebanon-Syria, Palestine, Türkiye, Xinjiang, Baleares, Central European Russia, Corse, France, Greece, Italy, Kriti, Portugal, Sicilia, South European Russia, Spain, Ukraine AlgeriaCape ProvincesFree StateKwaZulu-NatalLesothoLibyaMoroccoNorthern ProvincesTunisiaCyprusKazakhstanLebanon-SyriaPalestineTürkiyeXinjiangCentral European RussiaCorseFranceGreeceItalyKritiPortugalSiciliaSouth European RussiaSpainUkraine Baleares
Native distribution of Crassula vaillantii, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Baleares BAL EUROPE
Central European Russia RUC
Corse COR
France FRA
Greece GRC
Italy ITA
Kriti KRI
Portugal POR
Sicilia SIC
South European Russia RUS
Spain SPA
Ukraine UKR
Algeria ALG AFRICA
Cape Provinces CPP
Free State OFS
KwaZulu-Natal NAT
Lesotho LES
Libya LBY
Morocco MOR
Northern Provinces TVL
Tunisia TUN
Cyprus CYP ASIA-TEMPERATE
Kazakhstan KAZ
Lebanon-Syria LBS
Palestine PAL
Türkiye TUR
Xinjiang CHX

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 176 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 0.6 °C 4.3 °C 10.8 °C
Warmest month, mean daily high 23.8 °C 28.0 °C 32.9 °C
Annual rainfall 248 mm 645 mm 901 mm
Rainfall in the driest quarter 5 mm 56 mm 158 mm

It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 176 research-grade observations of Crassula vaillantii that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 8 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Bulliarda pedunculata St.-Lag.
  • Bulliarda rosea Bubani
  • Bulliarda vaillantii (Willd.) DC.
  • Bulliarda vaillantii var. subulata Harv.
  • Elatine aetolica Halácsy & Wettst.
  • Hydrophila vaillantii (Willd.) House
  • Tillaea vaillantii Willd.
  • Tillaeastrum vaillantii (Willd.) Britton

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.