Evidences Viola riviniana
| Name: | Viola riviniana |
| Family: | Violaceae |
| Genus: | Viola |
Habitats and communities
The flower Viola riviniana we could document in the following habitats, among others:
Distribution
So far, we have been able to observe and document photographically the species Viola riviniana at altitudes of 1020m to 1310m above sea level.
We have so far been able to observe and document photographically the species Viola riviniana between 6. March and 5. May.
So far we have been able to add 7 observations of this species to the database.
Ecological indicator values according to ©Landolt et al. (2010) for Viola riviniana
| Climate | Temperature number T | 3ii | Montane, large Variation. |
| Continentality K | 4i | Subcontinental, small variation. | |
| Light number L | 3i | Semi-shade, small variation. | |
| Soil | Moisture number F | 2.5ii | Fresh, large Variation. |
| Moisture variability W | 3 | Moisture strongly varying. | |
| Reaction number R | 2ii | Acid, large Variation. | |
| Nutrients number N | 3i | Medium infertile to medium fertile, small variation. | |
| Heavy metal tolerance M | m | Heavy metal tolerant. | |
| Humus number H | 5ii | High humus content, large Variation. | |
| Aeration D | 1ii | Bad aeration, large Variation. |
Legend:
The exact description of the factors and values can be found in the book «Flora indicativa».
The exact description of the factors and values can be found in the book «Flora indicativa».
Source: Book «Flora indicativa»
Threats
The threat to the species Viola riviniana is LC: Not endangered.
Source: Red List of Vascular plants, Switzerland , Edition 2016