Dactylorhiza viridis(L.) R.M.Bateman, Pridgeon & M.W.Chase

국표에 없다.

Dactylorhiza viridis, the frog orchid, is a species of flowering plant in the orchid family Orchidaceae. It has also been treated as the only species Coeloglossum viride of the monotypic genus Coeloglossum.

Description

The plant arises from fleshy, forked roots and ranges in height from 10 to 55 cm. The leaves of D. viridis are 5–14 cm long and 2–7 cm wide; leaves at the base of the orchid are obovate to elliptical, while leaves higher on the stem become lanceolate. Two to six leaves are found on one plant, and leafing is alternate.

The inflorescence of the orchid is a dense raceme (spike-like cluster) containing 7 to 70 small flowers. Flowers are greenish in color, and often tinged with purple, reddish, or red-brown color. The flowers are subtended by conspicuous long, tapering bracts which are 1–6 cm long, with the lower bracts longer and typically greatly exceeding the length of the flower. The sepals are oval with little or no point, 3–7 mm long and 2–4 mm wide and dark green. The sepals join with the petals to form a hood opposite the labellum (lower petal) of the flower. Petals are long and narrow, 3.5–5 mm long and about 0.5 mm wide, and curve inwards. The labellum is strap-shaped and usually split at the very tip to form two or three tooth-like divisions, with the middle tooth smaller than the others. It is 5–11 mm long and 1–4 mm wide. A 2–3 mm long nectar spur projects behind the labellum.

Dactylorhiza viridis flowers in late May and early June. It is either pollinated by bees and small wasps, or reproduces autogamously by incoherent pollinia; that is, the pollinia crumble and some pollen falls on the stigma, fertilizing the flower.

In North America, Dactylorhiza viridis can be mistaken for Platanthera flava (the pale green orchid), but can be best distinguished by the labellum, which is notched at the apex and does not have the tubercle of P. flava.

Distribution

Dactylorhiza viridis has a wide distribution across the cooler parts of the Northern Hemisphere, covering much of Europe, non-tropical Asia (Russia, Japan, China, the Himalayas, etc.), much of Canada and parts of the United States (Alaska, Northeast, the Appalachians, Great Lakes Region, Northern Great Plains, and Rocky Mountains). It is typically found growing in moist, rich soil in wet meadows, moist or wet deciduous woods and thickets, and is frequently found on steep slopes.

Dactylorhiza viridis - Wikipedia

Northern Hemisphere

The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the Solar System as Earth's North Pole.

Northern Hemisphere - Wikipedia

Merry's Meadows

Merry's Meadows is a 12.4-hectare (31-acre) nature reserve west of Stretton in Rutland. It is managed by the Leicestershire and Rutland Wildlife Trust, and is a biological Site of Special Scientific Interest under the name Greetham Meadows.

This ridge and furrow meadow is the only known location in the county for the frog orchid. The soil is on boulder clay, and grasses include crested dog's-tail, sweet vernal-grass, upright brome, downy oat-grass and quaking grass. There are several ponds.

The only access is by a 400 metre footpath from the Viking Way. The path runs along the left side of a hedge until about 100 metres from the entrance, when it crosses to the right side.

 

 

 

 

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