Bazzania trilobata(L.) Gray

WFO wfo-0001196112 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Bazzania trilobata, photographed by Pierre Cartier
fig. a Pierre Cartier, CC0 1.0 / 2022-06-10 / obs. 205008358
Bazzania trilobata, photographed by José Luis Camaño
fig. b José Luis Camaño, CC0 1.0 / obs. 205072620
Bazzania trilobata, photographed by José Luis Camaño
fig. c José Luis Camaño, CC0 1.0 / obs. 204935519
Bazzania trilobata, photographed by Michael J. Papay
fig. d Michael J. Papay, CC BY 4.0 / obs. 201664573
Bazzania trilobata, photographed by Clay Gibbons
fig. e Clay Gibbons, CC BY 4.0 / obs. 201758171
Bazzania trilobata, photographed by Clay Gibbons
fig. f Clay Gibbons, CC BY 4.0 / obs. 201757592
Bazzania trilobata, photographed by Clay Gibbons
fig. g Clay Gibbons, CC BY 4.0 / obs. 197676203
Bazzania trilobata, photographed by Lynn Harper
fig. h Lynn Harper, CC0 1.0 / obs. 195464220

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.

Where it actually grows measured, from 1,951 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -15.8 °C -9.5 °C -1.0 °C
Warmest month, mean daily high 18.4 °C 23.1 °C 28.0 °C
Annual rainfall 810 mm 1,305 mm 1,818 mm
Rainfall in the driest quarter 123 mm 272 mm 370 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,951 research-grade observations of Bazzania trilobata 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 46 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.

  • Bazzania hattoriana Kamim.
  • Bazzania pompeana var. uedae (Ihsiba) S.Hatt.
  • Bazzania tridenticulata (Michx.) Trevis.
  • Bazzania tridentoides W.E.Nicholson
  • Bazzania trilobata f. contigua Jørg.
  • Bazzania trilobata f. decipiens Jørg.
  • Bazzania trilobata f. densa Jørg.
  • Bazzania trilobata f. depauperata (Müll.Frib.) Jørg.
  • Bazzania trilobata f. grandis (Nees) Müll.Frib.
  • Bazzania trilobata f. laxa (Nees) Jørg.
  • Bazzania trilobata f. pusilla Jørg.
  • Bazzania trilobata f. ramosa (Müll.Frib.) Müll.Frib.
  • Bazzania trilobata f. recurva Jørg.
  • Bazzania trilobata f. trilobata
  • Bazzania trilobata var. aquatica Loitl. ex Schiffn.
  • Bazzania trilobata var. tridenticulata (Michx.) Underw.
  • Herpetium trilobatum (L.) Nees
  • Herpetium trilobatum f. grande Nees
  • Herpetium trilobatum f. laxum Nees
  • Herpetium trilobatum f. trilobatum
  • Jungermannia bilobata F.Weber ex Zenker & D.Dietr.
  • Jungermannia radicans Hoffm.
  • Jungermannia spinulosa var. tridenticulata (Michx.) Hook.
  • Jungermannia tridenticulata Michx.

and 22 more.

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.

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. It has no native range either: Kew's checklist does not cover this taxon.