Viola helena | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Violaceae |
Genus: | Viola |
Species: | V. helena |
Binomial name | |
Viola helena Forbes & Lydgate | |
Synonyms | |
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Viola helena, commonly known as Wahiawa stream violet, is a rare species of flowering plant in the violet family. It is endemic to Hawaii, where it is known only from the Wahiawa Mountains of Kauai. [1] It is threatened by exotic plant species and feral pigs. It is a federally listed endangered species of the United States.
Viola helena is a subshrub which can reach 8 meters in height. It has long, narrow leaves and pale purple or white flowers. [2]
This species is in decline and its numbers have dropped since the 1990s. There are two populations left, one of which was decimated by a landslide in 2005, leaving only a few seedlings and a seed pod. The other population, containing seven individuals, may be sterile and is too far from the first population to interbreed with it. [1]
The garden pansy is a type of polychromatic large-flowered hybrid plant cultivated as a garden flower. It is derived by hybridization from several species in the section Melanium of the genus Viola, particularly V. tricolor, a wildflower of Europe and western Asia known as heartsease. It is sometimes known as V. tricolor var. hortensis, but this scientific name is ambiguous. While V. tricolor var. hortensisGroenland & Rümpler is a synonym of Viola × wittrockiana, V. tricolor var. hortensisDC. refers to a horticultural variety of wild pansy that had been illustrated in Flora Danica in 1777 before the existence of Viola × wittrockiana.
Viola is a genus of flowering plants in the violet family Violaceae. It is the largest genus in the family, containing over 680 species. Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes.
Viola tricolor is a common European wild flower, growing as an annual or short-lived perennial. The species is also known as wild pansy, Johnny Jump up, heartsease, heart's ease, heart's delight, tickle-my-fancy, Jack-jump-up-and-kiss-me, come-and-cuddle-me, three faces in a hood, love-in-idleness, and pink of my john.
Viola riviniana, the common dog-violet, is a species of flowering plant in the family Violaceae, native to Eurasia and Africa. It is also called wood violet and dog violet. It inhabits woodland edges, grassland and shady hedge banks. It is found in all soils except those which are acid or very wet.
Viola odorata is a species of flowering plant in the family Violaceae, native to Europe and Asia. This small hardy herbaceous perennial is commonly known as wood violet, sweet violet, English violet, common violet, florist's violet, or garden violet. It has been introduced into the Americas and Australia.
The bee hummingbird, zunzuncito or Helena hummingbird is a species of hummingbird, native to the island of Cuba in the Caribbean. It is the world's smallest bird.
Viola sororia, known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.
Prosperous Bay Plain is an area on the eastern coast of Saint Helena, a British island territory in the South Atlantic Ocean. It is the site of the Saint Helena Airport, and is notable for its high invertebrate biodiversity.
Erythronium helenae is a species of flowering plant in the lily family which is known by the common names Pacific fawn lily and St. Helena fawn lily. It is endemic to the coastal mountains north of the San Francisco Bay Area in California. It is named for the local peak Mount Saint Helena, forming the point where Napa, Sonoma and Lake Counties meet. It grows on the slopes of the mountain at elevations of 500–1200 m, often on serpentine soils.
Viola reichenbachiana, also known as the early dog-violet, pale wood violet, slender wood violet, hedge violet, or wood dog violet, is a species of flowering plant in the Viola genus. This species hybridises with Viola riviniana, the common dog-violet, to produce Viola × bavarica. The plant is named after the 19th century botanist Ludwig Reichenbach. It is a rhizomatous herbaceous perennial that is widely known for its purple petals, and it typically resides along road banks or among other rich vegetation, as other wild pansies do. The name dog violet refers to its lack of scent, making it supposedly only fit for dogs.
Speyeria mormonia, commonly known as the Mormon fritillary, is a North American butterfly belonging to the family Nymphalidae. It is highly diverse, having differentiated into several subspecies which occupy a wide geographic range. S. mormonia exhibits extreme protandry, which is the emergence of male adults before female adults. This has several consequences on male and female behavior. Habitat specificity is still being investigated, as there are few known environmental predictors, and S. mormonia appears to be associated with a wide range of habitats. This species is not under threat, and conservation efforts are generally not necessary.
Viola kauaensis is a rare species of flowering plant in the violet family known by the common names Kauai violet and pohe hiwa. It is endemic to Hawaii, where it is known from Kauai and Oahu.
Viola lanaiensis is a rare species of flowering plant in the violet family known by the common name Hawaii violet. It is endemic to Hawaii, where it is known only from the island of Lanai. It is threatened by deer, sheep, and introduced species of plants. It is a federally listed endangered species of the United States.
Viola oahuensis is a rare species of flowering plant in the violet family known by the common name Oahu violet.
Viola selkirkii is a species of violet known by the common names Selkirk's violet and great-spur violet. It is native throughout the Northern Hemisphere, its distribution circumboreal.
Viola egglestonii, commonly known as glade violet, is a species herbaceous plant in the violet family. It is native to a small area of eastern North America, only being found in limestone cedar glades of the Interior Low Plateau and Ridge and Valley ecoregions of Alabama, Georgia, Indiana, Kentucky, and Tennessee.
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.
Viola lactea, also known by its common name pale dog violet, is a species of flowering planet of the family Violaceae.
Viola gracilis, also known as the Olympian violet, is a species of flowering plant within the family Violaceae.
Viola guadalupensis, the Guadalupe Mountains violet, is a perennial yellow-flowered violet, and is an extremely rare endemic plant of the Guadalupe Mountains. The violet is known only from Guadalupe Mountains National Park, where it grows at high elevations on vertical limestone faces.