Neuwiedia singapureana
| Neuwiedia singapureana | ||||||||||||
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| Neuwiedia singapureana | ||||||||||||
| ( Wall. Ex Baker ) Rolfe |
Neuwiedia singapureana is a kind of the genus Neuwiedia in the family of orchid (Orchidaceae). The herbaceous plants come from Southeast Asia.
description
Neuwiedia singapureana grows up to 40 to 50 cm. The plants underground have a rhizome about 10 cm long and 1 to 1.5 cm in diameter. The above-ground part of the stem becomes about 10 cm high, it is densely covered with leaves . The leaves are lanceolate to oblong-lanceolate, the leaf blade is 25 to 40 cm long and 3 to 6 cm wide. The leaf base is narrowed like a stalk and encompasses the stem, it is 5 to 10 cm long. The upper leaves in particular are hairy, as is the inflorescence. There are both shorter glandless hairs up to 0.35 mm in length and glandular, longer hairs that reach 0.45 to 0.65 mm.
The inflorescence is a terminal cluster . The peduncle is 7 to 8 cm long, between supreme fallen leaf and flower unterster are some bracts , which are wider than the bracts are the flowers. The part of the inflorescence covered with flowers becomes about 12 cm long. Flowering time in China is in May and June. One inflorescence contains 10 to 75 flowers . They are 23 to 35 mm in size, they are fragrant, their color is yellow, ocher or white. The inflorescence axis, bracts and petals are hairy. The bracts are oval to lanceolate-oval, their length is 10 to 15 mm. The oval ovary is hairy sparsely glandular. The petals are all quite similar, but there is a very slight differentiation between the two lateral and central petals of a circle. The sepals are hairy on the outside, elongated to narrowly elliptical in shape, the two lateral ones are 18 to 23 mm long and 4 to 5 mm wide. The third sepal is smaller, 16 to 20 mm long and 3 to 5 mm wide. The petals are provided with a longitudinal keel on the outside, this is hairy. They are obovate in shape, the sides are 16 to 20 mm long and 5 to 8 mm wide. The middle petal, the lip , is hardly different, it is slightly larger than the other two inner petals and measures 16 to 21 mm in length and 5.5 to 11 mm in width. The "Flora of China" gives slightly smaller dimensions for the petals. All petals have a small, attached point. The column consists of three stamens and the stylus , the mm to a length of 6 to 9 are fused together at the bottom. The free part of the stamens measures 3.5 mm in length in the side stamens and 8 mm in the middle. The anthers are linear and 5 to 6 mm long. The free part of the stylus is up to 7 mm long. The fruit is a juicy berry that turns orange to red when ripe.
Occurrence
Neuwiedia singapureana has a large distribution area in Southeast Asia, ranging from southern China via Thailand, Vietnam and Malaysia to Borneo and Sumatra . The locations are at altitudes of 60 to 600 m, rarely up to 900 m. Forests are populated on both nutrient-rich and nutrient-poor soils. Averyanov specifies altitudes of 450 to 1250 m for Vietnam, where the plants grow on soils with sandstone, granite and limestone as parent rock.
Systematics and botanical history
Neuwiedia singapureana was scientifically described for the first time in 1875 under the name Tupistra singapureana and in 1907 it was added to the genus Neuwiedia by Robert Allen Rolfe . The taxonomic status is not clear: some authors put it as a subspecies or even as a variety of Neuwiedia Zollingeri . Neuwiedia curtisii Rolfe , Neuwiedia ochracea Ridl. and Neuwiedia balansae Baill. ex Gagnep. are synonyms of Neuwiedia singapureana .
Individual evidence
- ↑ a b c d e Chen Xinqi, Stephan W. Gale, Phillip Cribb : Neuwiedia . In: Wu Zhengyi, Peter H. Raven (Ed.): Flora of China . tape 25 : Orchidaceae . Missouri Botanical Garden Press, St. Louis 2009, ISBN 978-1-930723-90-0 , pp. 21 ( efloras.org ).
- ^ A b Gunnar Seidenfaden , Jeffrey J. Wood: The orchids of peninsular Malaysia and Singapore . Olsen & Olsen, Fredensborg 1992, ISBN 87-85215-24-4 , pp. 34 .
- ↑ a b c d e Eduard Ferdinand de Vogel: Monograph of the Tribe Apostasieae (Orchidaceae) . In: Blumea . tape 17 , no. 2 , 1969, p. 331 .
- ^ A b Leonid Averyanov: The Orchids of Vietnam. Illustrated Survey . In: Turczaninowia . tape 11 , no. 1 , 2008, p. 51-52 .
- ↑ a b c Rafaël Govaerts (Ed.): Neuwiedia singapureana. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 10, 2020.
Web links
Wikispecies: Neuwiedia singapureana - species directory