Plagiomnium undulatum(Hedw.) T.J.Kop.

WFO wfo-0001186539 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Plagiomnium undulatum, photographed by José Luis Camaño
fig. a José Luis Camaño, CC0 1.0 / 2022-06-12 / obs. 205802419
Plagiomnium undulatum, photographed by José Luis Camaño
fig. b José Luis Camaño, CC0 1.0 / obs. 205977667
Plagiomnium undulatum, photographed by Alexis Tinker-Tsavalas
fig. c Alexis Tinker-Tsavalas, CC BY 4.0 / obs. 205537619
Plagiomnium undulatum, photographed by Tobias Schönberg
fig. d Tobias Schönberg, CC0 1.0 / obs. 204206829
Plagiomnium undulatum, photographed by Alexis Tinker-Tsavalas
fig. e Alexis Tinker-Tsavalas, CC BY 4.0 / obs. 203424504
Plagiomnium undulatum, photographed by José Luis Camaño
fig. f José Luis Camaño, CC0 1.0 / obs. 204637357
Plagiomnium undulatum, photographed by Johan Kjær Prehn
fig. g Johan Kjær Prehn, CC BY 4.0 / obs. 204899794
Plagiomnium undulatum, photographed by Zeke Marshall
fig. h Zeke Marshall, CC BY 4.0 / obs. 201505619

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 -10.8 °C -3.5 °C 3.1 °C
Warmest month, mean daily high 18.1 °C 22.5 °C 26.2 °C
Annual rainfall 585 mm 793 mm 1,711 mm
Rainfall in the driest quarter 94 mm 139 mm 304 mm

It is found where winters bring hard frost. 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 Plagiomnium undulatum 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 15 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.

  • Astrophyllum undulatum (Hedw.) Lindb.
  • Astrophyllum undulatum var. cuspidatum C.E.O.Jensen
  • Bryum ligulatum (F.Weber & D.Mohr) Schreb. ex Sm.
  • Bryum undulatum (Hedw.) Crome
  • Hypnum ligulatum F.Weber & D.Mohr
  • Hypnum undulatum (Hedw.) Rebent.
  • Mnium ligulatum (F.Weber & D.Mohr) Willd. ex Brid.
  • Mnium serpyllifolium var. undulatum (Hedw.) Jolycl.
  • Mnium undulatum Hedw.
  • Mnium undulatum f. brevifolium (Thér.) Smirnova
  • Mnium undulatum var. brevifolium Thér.
  • Mnium undulatum var. cuspidatum (C.E.O.Jensen) Limpr.
  • Orthomnion undulatum (Hedw.) T.J.Kop. & Yu Sun
  • Orthomnion undulatum var. madeirense (T.J.Kop. & Sérgio) T.J.Kop. & Yu Sun
  • Polla ligulata (F.Weber & D.Mohr) Brid.

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.