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Viola lactea, also known by its common name pale dog violet,[3] is a species of flowering planet of the family Violaceae.
Viola lactea has sparsely hairy creeping stems and a rosette of lanceolate leaves which are cuneate at their base. Each stem has one flower; the flowers are shaped similar to other violets and go from milky-violet to greyish-pink in colour, with the deep purple veins on the lower petal. The presence of green spurs at the back of its flower and the triangular stipules on its upper leaves being equal or longer in length than the leaf stalks differentiate V. lactea from other similar species.[4][5]
This species hybridizes easily with Viola riviniana, which often occurs in the same habitat. The population of hybrid plants is thought to be increasing where both species are present, especially around the Cornish coast, as the V. riviniana x lactea hybrid outcompetes both its parent species. However, the hybrid plants are generally sterile. V. lactea can also hybridize with Viola canina, though this is much more rare.[5]
Viola lactea grows on heathland, and favours areas which are bare or only have short vegetation (due to grazing, burning or other disturbance such as turf cutting).[6]
The native range of V. lactea is described as Western European Oceanic. It occurs in the south and west of the British Isles, along the Atlantic coast of France, and in north-western Spain. Its southern reach is in Portugal, around the River Tagus.[7]
Within the British Isles, it is now most common in the New Forest, Dorset, Cornwall, Pembrokeshire and County Kerry; it is no longer found in much of its previous range (especially in South East England) due to habitat decline.[5]
Viola lactea is classed as 'Vulnerable' within Great Britain and 'Endangered' within England.[8] It is designated as a species “of principal importance for the purpose of conserving biodiversity” under the Natural Environment and Rural Communities Act 2006.[6]
Viola lactea, also known by its common name pale dog violet, is a species of flowering planet of the family Violaceae.
Viola lactea
La violette lactée (Viola lactea) est une plante herbacée vivace de la famille des Violacées.
Pas de rosette de feuilles à la base de la plante. Les feuilles vert foncé, sont lancéolées et souvent teintées de pourpre. La base du limbe est cunéiforme, en forme de coin. Les fleurs sont bleu pâle avec un éperon jaune verdâtre. L'éperon est plus grand que les appendices du calice. le pétale inférieur a un apex étroitement obtus à subaigu. Le fruit est une capsule glabre.
Viola lactea
Viola lactea
Organes reproducteurs :
Graine:
Habitat et répartition :
Données d'après: Julve, Ph., 1998 ff. - Baseflor. Index botanique, écologique et chorologique de la flore de France. Version : 23 avril 2004.
C'est une plante que l'on peut rencontrer en France dans les landes sèches acides du littoral.
Viola lactea
La violette lactée (Viola lactea) est une plante herbacée vivace de la famille des Violacées.
Viola lactea é uma espécie de planta com flor pertencente à família Violaceae.
A autoridade científica da espécie é Sm., tendo sido publicada em English Botany vii. t. 445 (1798).
Trata-se de uma espécie presente no território português, nomeadamente em Portugal Continental.
Em termos de naturalidade é nativa da região atrás indicada.
Não se encontra protegida por legislação portuguesa ou da Comunidade Europeia.
Viola lactea é uma espécie de planta com flor pertencente à família Violaceae.
A autoridade científica da espécie é Sm., tendo sido publicada em English Botany vii. t. 445 (1798).
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