Porella platyphylla

Plate 1 figs. a–h · 8 separate observations

Porella platyphylla, photographed by Pavel Kacl — fig. b Pavel Kacl, CC BY 4.0 / obs. 201285896

Porella platyphylla, photographed by Christian Berg — fig. c Christian Berg, CC BY 4.0 / obs. 195025914

Porella platyphylla, photographed by Jason Grant — fig. e Jason Grant, CC BY 4.0 / obs. 190278190

Porella platyphylla, photographed by Tristan Jobin — fig. f Tristan Jobin, CC BY 4.0 / obs. 188424697

Porella platyphylla, photographed by Laura J. Costello — fig. g Laura J. Costello, CC BY 4.0 / obs. 187511878

Porella platyphylla, photographed by John Abrams — fig. h John Abrams, CC BY 4.0 / obs. 186595522

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 1,953 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-15.1 °C	-7.4 °C	1.3 °C
Warmest month, mean daily high	19.6 °C	23.8 °C	29.3 °C
Annual rainfall	624 mm	1,063 mm	1,633 mm
Rainfall in the driest quarter	102 mm	204 mm	334 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 1,953 research-grade observations of Porella platyphylla 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 49 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.

Antoiria vulgaris Raddi
Antoiria vulgaris var. minor Raddi
Bellincinia platyphylla (L.) Kuntze
Cavendishia platyphylla (L.) Gray
Cavendishia platyphylla var. major Gray
Cavendishia platyphylla var. platyphylla
Jungermannia platyphylla L.
Jungermannia platyphylla var. intermedia Grognot
Jungermannia platyphylla var. major Hook.
Jungermannia platyphylla var. major Wahlenb.
Jungermannia platyphylla var. platyphylla
Lejeunea platyphylla (L.) Corda
Madotheca jackii Schiffn.
Madotheca navicularis f. distans Nees
Madotheca navicularis var. distans (Nees) Debat
Madotheca platyphylla (L.) Dumort.
Madotheca platyphylla f. applanata Nees
Madotheca platyphylla f. applanata Nees
Madotheca platyphylla f. attenuata Nees
Madotheca platyphylla f. communis Nees
Madotheca platyphylla f. convexifolia Papp
Madotheca platyphylla f. convexula Nees
Madotheca platyphylla f. convexula-attenuata Nees
Madotheca platyphylla f. depauperata Bernet

and 25 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
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.