Aorchis
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| Aorchis cyclochila Aorchis spathulata |
Aorchis Vermeulen 1972, is a small genus of two terrestrial species from the orchid family (Orchidaceae), subfamily Orchidoideae, tribe Orchideae, subtribe Orchidinae.
These frequent species occur in shrubs and alpine meadows at elevations of 2300--4300 m, from the Himalaya to China, Japan, Korea and the Russian Far East, often forming extensive colonies. In the past they have been described as belonging to the genera Habenaria, Gymnadenia or Galeorchis.
These orchids are between 8 and 15 cm tall. They have a sympodial growth, with long, slender, creeping rhizomes.
The erect stem is cylindric, with 1 or 2 tubular sheaths at its foot.
The broad, acute leaves are elliptic, spatulate or spatulate-oblanceolate. The plants show mostly two opposite leaves, (rarely 1 or 3) with a leafstalk, folded lengthwise.
The inflorescence (1,5 – 5 cm) is a raceme with 1-5 flowers; twisted to one side, growing on an erect scape (= naked peduncle rising from the ground). The main stalk is glabrous with spreading floral bracts. The glabrous, epigynous ovary is spindle-shaped. They bloom from July till August.
The pink sepals and petals, are oblong with an obtuse apex. The dorsal sepals form a hood with the petals.
The pink lip is marked with many purple dots and is as long as the sepals. It shows an oblong, elliptic or ovoid shape with a nearly entire margin. There is a short spur.
Species
- Aorchis cyclochila (Russian Far East to Japan).
- Aorchis spathulata (Himalaya to SC. China).
Reference
Bergel, G., Aorchis cyclochila (Franch et Savat) Hashimoto - Die Orchidee 51 2000, Heft 2