Dumortiera hirsuta

Plate 1 figs. a–h · 8 separate observations

Dumortiera hirsuta, photographed by Rafael Medina — fig. b Rafael Medina, CC BY 4.0 / obs. 205976462

Dumortiera hirsuta, photographed by Tyler Bishop — fig. c Tyler Bishop, CC BY 4.0 / obs. 198445133

Dumortiera hirsuta, photographed by 胡正恆(Jackson Hu) — fig. f 胡正恆(Jackson Hu), CC BY 4.0 / obs. 195613616

Dumortiera hirsuta, photographed by Attila Oláh — fig. h Attila Oláh, CC BY 4.0 / obs. 189100835

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 1,993 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-1.3 °C	11.3 °C	19.9 °C
Warmest month, mean daily high	20.2 °C	28.2 °C	32.1 °C
Annual rainfall	1,058 mm	2,208 mm	4,597 mm
Rainfall in the driest quarter	87 mm	287 mm	798 mm

It is found where winters bring light 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 1,993 research-grade observations of Dumortiera hirsuta 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 22 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.

Askepos brevipes Griff.
Dumortiera calcicola Campb.
Dumortiera hirsuta var. angustior Gottsche, Lindenb. & Nees
Dumortiera hirsuta var. brasiliensis Schiffn.
Dumortiera hirsuta var. depauperata Gottsche, Lindenb. & Nees
Dumortiera hirsuta var. hirsuta
Dumortiera hirsuta var. intermedia Gottsche, Lindenb. & Nees
Dumortiera hirsuta var. irrigua (Wilson ex Hook.) Spruce
Dumortiera hirsuta var. latior Gottsche, Lindenb. & Nees
Dumortiera hirsuta var. nepalensis (Taylor) Frye & L.Clark
Dumortiera hirsuta var. trichopus Spruce
Dumortiera irrigua (Wilson ex Hook.) Nees
Dumortiera nepalensis (Taylor) Nees
Dumortiera trichocephala (Hook.) Nees
Dumortiera velutina Schiffn.
Hygrophila irrigua (Wilson ex Hook.) Taylor
Hygrophila nepalensis Taylor
Hygropyla irrigua (Wilson ex Hook.) Taylor
Marchantia hirsuta Sw.
Marchantia hirsuta Reinw., Blume & Nees
Marchantia irrigua Wilson ex Hook.
Marchantia trichocephala Hook.

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.