Pteridaceae

Hemionitis triangularis (Kaulf.) Christenh.

Also mentioned in the literature as Pentagramma triangularis. (?)

Geographic distribution (?)

Pht286 Map V1 1024x563

Confirmed occurrences (?): British Columbia, California, Idaho, Mexican Pacific Is., Mexico Northwest, Oregon, Washington

Ecology

Found in the biomes (?): TD, TC, MB, MC, MS, MF, DX

Found in the Köppen-Geiger climatic zones (?): BSk, Csa, Csb, BWk, BWh, Cfb, Csc, BSh, Aw, ET, Cfc

Distribution across environmental gradients (?):

Elevation

20260120 Pht286 Elev 574x1024

BIO1 (annual mean temperature)

20260120 Pht286 Bio1 1024x576

BIO4 (temperature seasonality)

20260120 Pht286 Bio4 1024x576

BIO12 (annual precipitation)

20260120 Pht286 Bio12 1024x576

BIO15 (precipitation seasonality)

20260120 Pht286 Bio15 1024x576
Conservation

IUCN Red List of Threatened Species 2025-2 (?): Not assessed

Angiosperm Extinction Risk Predictions v1 (?): Not assessed

Data collection gaps

Botanical countries lacking appropriate occurrence records (?): None

References

Holmlund, HI, Pratt, RB, Jacobsen, AL, Davis, SD & Pittermann, J. 2019. High-resolution computed tomography reveals dynamics of desiccation and rehydration in fern petioles of a desiccation-tolerant fern. New Phytologist. 224(1):97–105. doi.org/10.1111/nph.16067.

Useful links

Source distribution information: powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77182752-1

Source occurrence data: doi.org/10.15468/dl.qk7txw

Source IUCN conservation status: x