Plate 1 figs. a–h · 8 separate observations
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.
Native range 22 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Altay | ALT | ASIA-TEMPERATE |
| Amur | AMU | |
| Buryatiya | BRY | |
| Chita | CTA | |
| Inner Mongolia | CHI | |
| Irkutsk | IRK | |
| Kazakhstan | KAZ | |
| Krasnoyarsk | KRA | |
| Manchuria | CHM | |
| Mongolia | MON | |
| Türkiye | TUR | |
| Tuva | TVA | |
| West Siberia | WSB | |
| Yakutiya | YAK | |
| Baltic States | BLT | EUROPE |
| Czechia-Slovakia | CZE | |
| East European Russia | RUE | |
| Finland | FIN | |
| Germany | GER | |
| North European Russia | RUN | |
| Norway | NOR | |
| Sweden | SWE |
Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.
Where it actually grows measured, from 243 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -32.5 °C | -22.7 °C | -17.6 °C |
| Warmest month, mean daily high | 17.3 °C | 23.0 °C | 24.5 °C |
| Annual rainfall | 310 mm | 481 mm | 1,084 mm |
| Rainfall in the driest quarter | 13 mm | 57 mm | 169 mm |
It is found where winters are arctic. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 243 research-grade observations of Pedicularis karoi 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 5 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.
- Pedicularis borealis Steven ex Hook.f.
- Pedicularis opsiantha Ekman
- Pedicularis palustris subsp. karoi (Freyn) P.C.Tsoong
- Pedicularis palustris subsp. opsiantha (Ekman) Almq.
- Pedicularis pseudokaroi Bonati
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.
- Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.
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.