Plate 1 figs. a–h · 4 observations
This species has been photographed under an open licence only 4 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.
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 124 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -7.9 °C | -0.2 °C | 3.0 °C |
| Warmest month, mean daily high | 17.3 °C | 25.3 °C | 31.6 °C |
| Annual rainfall | 403 mm | 909 mm | 2,100 mm |
| Rainfall in the driest quarter | 61 mm | 142 mm | 298 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 124 research-grade observations of Koeleria vallesiana 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 60 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.
- Aira valesiaca Colla
- Aira valesiana All.
- Aira vallesiana (Honck.) All.
- Airochloa pubescens Link
- Airochloa vallesiana (Honck.) Link
- Brachystylus setaceus (Pers.) Dulac
- Festuca splendens Pourr.
- Koeleria alpicola Godr. & Gren.
- Koeleria andreanszkyi Ujhelyi
- Koeleria aurata Bubani
- Koeleria castellana Boiss. & Reut.
- Koeleria castellana var. velutina Willk.
- Koeleria cristata var. pectinata (Lam.) Pers.
- Koeleria epauneroi Kerguélen
- Koeleria gandreanszkyi Kerguélen
- Koeleria intricata Genty
- Koeleria langeana Willk. & Lange
- Koeleria linkii Kunth
- Koeleria narbonnensis Domin
- Koeleria nitida Ten.
- Koeleria pauneroi Ujhelyi
- Koeleria pectinata (Lam.) Shinners
- Koeleria scheuchzeri Rouy
- Koeleria setacea (Pers.) DC.
and 36 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.
- USDA PLANTS Database. common name, checklist symbol KOVA2. public domain. 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.