Английская Википедия:Acianthus exiguus
Шаблон:Short description Шаблон:Speciesbox
Acianthus exiguus, commonly known as tiny mosquito orchid,[1] is a flowering plant in the orchid family Orchidaceae and is endemic to New South Wales in Australia. It is a terrestrial herb with a single, heart-shaped leaf and up to five translucent greenish-white flowers with pinkish markings and is found growing in forests on the north coast of the state.
Description
Acianthus exiguus is a terrestrial, perennial, deciduous, sympodial herb with a single heart-shaped, glabrous, dark green leaf which is light reddish-purple on its lower surface. The leaf is Шаблон:Convert long, Шаблон:Convert wide on a stalk Шаблон:Convert high.[1][2][3][4]
There are up to five flowers well-spaced on a thin raceme Шаблон:Convert tall, each flower Шаблон:Convert long. The dorsal sepal is oval to elliptic in shape, Шаблон:Convert long, Шаблон:Convert wide, translucent greenish-white with faint red markings and forms a hood over the column. The central vein extends about Шаблон:Convert beyond the end of the labellum. The lateral sepals are Шаблон:Convert long, about Шаблон:Convert wide, linear to lance-shaped, often have a curved tip, are similar in colour to the dorsal sepal and project forwards below the labellum. The petals are a similar colour and are about Шаблон:Convert long, narrow egg-shaped to lance-shaped and usually spread widely. The labellum is pink to pinkish-mauve, Шаблон:Convert wide, about Шаблон:Convert wide, with the edges not rolled and lacking teeth. The thick, fleshy callus covering most of the central area is green and has many small pimple-like papillae on the outer half. Flowering occurs from May to June.[1][2][3][4]
This species is distinguished from other mosquito orchids by its small, greenish, semi-erect flowers and narrow, purplish labellum.[2][3]
Taxonomy and naming
Acianthus exiguus was first formally described by David Jones in 1991 and the description was published in Australian Orchid Research from specimens found near Wardell.[5][2] The specific epithet (exiguus) is a Latin word meaning "small", "little" or "petty".[2][6] In a 1995 paper published in the journal Allertonia, Paul Kores claimed that A. exiguus and 3 other species are not distinct from A. fornicatus and should be regarded as a synonyms.[7] That position has been adopted by Plants of the World Online.[8]
Ecology
The flowers of this species, unlike those of other mosquito orchids, are self-pollinating.[9]
Distribution and habitat
This orchid grows in localised populations between Repton and Wardell in the North Coast region of New South Wales.[2] It grows in sandy soil and clay loam in tall, moist forest and rainforest.[1][2][3][4]
Conservation
Acianthus exiguus has a ROTAP rating of 3RC-, indicating that it is uncommon.[4]
References
External links
- Английская Википедия
- Страницы с неработающими файловыми ссылками
- Acianthus
- Orchids of New South Wales
- Endemic orchids of Australia
- Plants described in 1991
- Taxa named by David L. Jones (botanist)
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
