Viola flettii is a species of violet known by the common name Olympic violet.[1][2] Native to the northeastern and eastern Olympic Mountains of Washington in northwestern United States, it occurs on rocky outcrops and talus at subalpine and alpine elevations, i.e., from 1,340–2,000 metres (4,400–6,560 ft), and blooms from June through August.[3] This rhizomatous herb produces a hairless stem reaching a maximum height of a few centimeters to around 15 centimeters. The basal leaves have purple-veined green reniform blades borne on petioles. Leaves on the flower stem are similar but smaller. A solitary flower is borne on a slender upright stem. It has five purplish-violet petals with yellowish bases, the lower three with purple veins. The lateral pair are bearded as is the stigma. The spur on the lowest petal is much shorter than the petal.[1]
The Olympic Mountains, part of the Pacific Coast Ranges of western North America, was a refugium isolated by glacial ice and outwash channels during the last glacial period.[4][5] Viola flettii is one of seven species of plants endemic to the Olympic Mountains.[5] Federally protected in Olympic National Park, it is a vulnerable species that appears on the Watch List of Vascular Plant Species of the Washington Natural Heritage Program.[1][6] Just 36 populations of the species have been identified, of which 22 are within the park or near its boundary.[7] The balance are protected in Olympic National Forest. Many populations are small. In 2001, on Mount Townsend just 20 individuals were counted; on Mount Ellinor, only eight.[4] Populations at higher elevations are less genetically diverse. Those on southern slopes are small. Potential threats include herbivory by Oreamnos americanus (mountain goats) that were introduced into the Olympic Mountains in the late 1920s.[7]
Viola flettii is a species of violet known by the common name Olympic violet. Native to the northeastern and eastern Olympic Mountains of Washington in northwestern United States, it occurs on rocky outcrops and talus at subalpine and alpine elevations, i.e., from 1,340–2,000 metres (4,400–6,560 ft), and blooms from June through August. This rhizomatous herb produces a hairless stem reaching a maximum height of a few centimeters to around 15 centimeters. The basal leaves have purple-veined green reniform blades borne on petioles. Leaves on the flower stem are similar but smaller. A solitary flower is borne on a slender upright stem. It has five purplish-violet petals with yellowish bases, the lower three with purple veins. The lateral pair are bearded as is the stigma. The spur on the lowest petal is much shorter than the petal.
The Olympic Mountains, part of the Pacific Coast Ranges of western North America, was a refugium isolated by glacial ice and outwash channels during the last glacial period. Viola flettii is one of seven species of plants endemic to the Olympic Mountains. Federally protected in Olympic National Park, it is a vulnerable species that appears on the Watch List of Vascular Plant Species of the Washington Natural Heritage Program. Just 36 populations of the species have been identified, of which 22 are within the park or near its boundary. The balance are protected in Olympic National Forest. Many populations are small. In 2001, on Mount Townsend just 20 individuals were counted; on Mount Ellinor, only eight. Populations at higher elevations are less genetically diverse. Those on southern slopes are small. Potential threats include herbivory by Oreamnos americanus (mountain goats) that were introduced into the Olympic Mountains in the late 1920s.
Violette de Flett
Viola flettii, en français la violette de Flett, est une espèce de plantes vivaces de la famille des Violaceae présente dans l'État de Washington au nord-ouest des États-Unis.
Viola flettii est présent dans l'État de Washington[2]. La plante est ainsi présente au sein du parc national Olympique[3]. Son nom anglophone est d'ailleurs Olympic violet en référence au mont Olympe, le point culminant du parc national, des montagnes Olympiques et de la péninsule Olympique.
Violette de Flett
Viola flettii, en français la violette de Flett, est une espèce de plantes vivaces de la famille des Violaceae présente dans l'État de Washington au nord-ouest des États-Unis.
Viola flettii là một loài cây có hoa tím được biết đến với tên gọi chung trong tiếng Anh là Olympic Violet. Có nguồn gốc từ phía đông bắc và phía đông núi Olympic của bang Washington ở tây bắc Hoa Kỳ, loài này mọc trên mỏm đá và chóp đá tại khu vực núi cao, tức là độ cao từ 1.340-2.000 mét, và nở hoa từ tháng Sáu đến tháng Tám. Loài cây thảo thân rễ này có một bộ rễ không lông hút đạt chiều cao tối đa của một vài cm đến khoảng 15 cm.
Viola flettii là một loài cây có hoa tím được biết đến với tên gọi chung trong tiếng Anh là Olympic Violet. Có nguồn gốc từ phía đông bắc và phía đông núi Olympic của bang Washington ở tây bắc Hoa Kỳ, loài này mọc trên mỏm đá và chóp đá tại khu vực núi cao, tức là độ cao từ 1.340-2.000 mét, và nở hoa từ tháng Sáu đến tháng Tám. Loài cây thảo thân rễ này có một bộ rễ không lông hút đạt chiều cao tối đa của một vài cm đến khoảng 15 cm.
