Pterigynandrum filiforme (pterigynandrum moss)

Plate 1 figs. a–h · 8 separate observations

Pterigynandrum filiforme, photographed by Christian Berg — fig. a Christian Berg, CC BY 4.0 / 2022-05-12 / obs. 198322547

Pterigynandrum filiforme, photographed by Randal — fig. b Randal, CC0 1.0 / obs. 172088078

Pterigynandrum filiforme, photographed by Jason Grant — fig. e Jason Grant, CC BY 4.0 / obs. 17356186

Pterigynandrum filiforme, photographed by Stephen James McWilliam — fig. g Stephen James McWilliam, CC0 1.0 / obs. 116410541

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 259 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-12.9 °C	-6.2 °C	-0.4 °C
Warmest month, mean daily high	15.8 °C	21.0 °C	26.3 °C
Annual rainfall	601 mm	1,247 mm	2,197 mm
Rainfall in the driest quarter	89 mm	202 mm	435 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 259 research-grade observations of Pterigynandrum filiforme 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 65 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.

Anomodon filiformis (Hedw.) Garov.
Bruchia filiforme (Hedw.) Hornsch. ex Wijk, Margad. & Florsch.
Grimmia filiformis (Hedw.) F.Weber & D.Mohr
Haptymenium filiforme (Hedw.) Fürnr.
Heterocladium frullaniopsis Müll.Hal. & Kindb.
Hygrohypnum molendinarium (DC.) Wijk & Margad.
Hypnum cylindraceum Brid.
Hypnum cylindricum Dicks.
Hypnum heteropterum (Brid.) Hampe
Hypnum molendinarium DC.
Hypnum molle var. heteromallum Brid.
Hypnum polyanthum var. gracile Turner
Leptohymenium ahnfeltii Hartm.
Leptohymenium elajochloron Łobarz.
Leptohymenium filiforme (Hedw.) Huebener
Leptohymenium filiforme var. alpestre Rabenh.
Leptohymenium filiforme var. crassius Hartm.
Leptohymenium filiforme var. decipiens (F.Weber & D.Mohr) Hartm.
Leptohymenium filiforme var. heteropterum (Brid.) Grönvall
Leptohymenium filiforme var. majus De Not.
Leptohymenium heteropterum (Brid.) Huebener
Leskea ahnfeltii (Hartm.) Müll.Hal.
Leskea cylindrica (Dicks.) Brid.
Maschalanthus filiformis (Hedw.) Spreng. ex Schultz

and 41 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.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.

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.