Effect of frost on Helleborus foetidus
Numéro d’image : 12918600
| A plant of Helleborus foetidus, the Stinking Hellebore, after a night of hard frost. The picture shows a plant that has lost turgour; both the flowering stems and the foliage have wilted. The white edges to the leaves are small ice crystals.In order to remain turgid, a plant must absorb soil moisture via its root system. This water is drawn upwards by evaporation at the stomatal pores on the underside of the leaves. It can disrupted by a lack of soil moisture, causing plants to wilt in hot dry weather. Low temperatures also inhibit the uptake of soil moisture, resulting in the wilting shown here. Such wilting is a normal response and is reversible. Within an hour of this picture being taken, the plant was fully upright again.H. foetidus is native to Western Europe. It is a statuesque hardy perennial garden plant that flowers from late December in the UK | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 5212 px × 3468 px |
| Model Release : | Non requis |
| Restrictions : | - |
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