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| {{Taxobox_begin | color = lightgreen | name = <center>'''Amitostigma'''</center>}} | |||
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| {{Taxobox_begin_placement | color = lightgreen}} | |||
| {{Taxobox_regnum_entry | taxon = ]ae}} | |||
| {{Taxobox_divisio_entry | taxon = ]}} | |||
| {{Taxobox_classis_entry | taxon = ]}} | |||
| {{Taxobox_ordo_entry | taxon = ]}} | |||
| {{Taxobox_familia_entry | taxon = ]}} | |||
| {{Taxobox subfamilia entry | taxon = ]}} | |||
| {{Taxobox tribus entry | taxon = Orchideae}} | |||
| {{taxobox subtribus entry | taxon = Orchidinae}} | |||
| {{Taxobox alliance entry | taxon = Orchis}} | |||
| {{Taxobox genus entry | taxon = '''''Amitostigma'''''}}<br/>{{Taxobox authority new | authority = ]}} | |||
| {{Taxobox_end_placement}} | |||
| {{Taxobox_section_subdivision | color = lightgreen | plural_taxon = <center>Species</center>}} | |||
| See text | |||
| {{Taxobox_end}} | |||
| '''Amitostigma''' ] 1919, is a genus in the orchid family (]), subfamily Orchidoideae, tribe Orchideae, subtribe Orchidinae, alliance Orchis | |||
| It is an exclusively Asian genus of 27 orchids, growing in the alpine habitats of east Asia, ], eastern ], ], and ] to ], of which 22 grow species in China. | |||
| These are dwarf ] orchids, including some ] species. The globose or ovoid ]s (1-1,5 cm) of these autotrophic plants are fleshy and not lobed, with several slender ]s. New shoots grow each tuber. | |||
| The ] is usually erect, with 1 (or rarely 2 or 3) basal or cauline (= belonging to the stem) leaves. The length of the stem can vary between 5 and 45 cm. | |||
| The green ] blade is not articulate and can have an oblong, lanceolate, elliptic, or ovate form, even within the same species (see ''A. lepidum''). The leaves appear at the time of expansion of the flower (= anthesis). | |||
| The terminal ] is racemose, seldom subcapitate. The floral ]s are often lanceolate. The cylindrical to fusiform ] is resupinate (= turned upside down). | |||
| Each inflorescence shows many (rarely 1 or 2) flowers. These are also resupinate and usually twisted to one side. | |||
| The ]s are completely separate from each other, with an oblong to ovate appearance, and usually 1-veined. The erect ]s are straight, often slightly broader than the sepals. | |||
| The 3- or 4-lobed ] is usually longer and broader than the petals and sepals, spurred at the base. The mid-lobe is oblong, square, or ovate. The margin of the lip is often slightly undulate. | |||
| They have a characteristic short ]. The erect ]s are cohesive with the column through its broad base or back.. They have two parallel locules with farinaceous, sectile ]. The small ] is beak-shaped, attached with its folded end to the viscidium. The two protuding ]s are slightly club-shaped | |||
| The ] is suberect. | |||
| The color may vary within the same species : ''Amitostigma lepidum'' may show a purple lip with white margins, or a white lip with purple dots or a totally white lip. Even the leaves may vary from lanceolate to ovate within the same species. | |||
| After flowering, the leaves turn yellow color and die off.The plants then starts its summer dormancy for several months. This cycle is well adapted to a climate which is hot and dry in summer. | |||
| == Species == | |||
| * ''Amitostigma alpestre'' : Alpine Chicken Orchid (Taiwan). | |||
| * ''Amitostigma amplexifolium'' (SC. China).. | |||
| * ''Amitostigma basifoliatum'' (China). | |||
| * ''Amitostigma bifoliatum'' (China). | |||
| * ''Amitostigma capitatum'' (China) . | |||
| * ''Amitostigma dolichocentrum'' (China) . | |||
| * ''Amitostigma faberi'' (China) | |||
| * ''Amitostigma farreri'' (Tibet).. | |||
| * ''Amitostigma gonggashanicum'' (China). | |||
| * ''Amitostigma gracile'' (China to Temp. E. Asia). | |||
| * ''Amitostigma keiskei'' (Japan) | |||
| * ''Amitostigma keiskeoides'' (Vietnam). | |||
| * ''Amitostigma kinoshitae'' (S. Kuril Is., Japan - Hokkaido, N. Honshu). | |||
| * ''Amitostigma kurokamianum'' (Japan - Kyushu: Mt. Kurokami). | |||
| * ''Amitostigma lepidum'' : Okinawa Orchid (Japan - S. Kyushu to Nansei-shoto. | |||
| * ''Amitostigma monanthum'' (SE. Tibet to C. China). | |||
| * *''Amitostigma monanthum'' var. ''forrestii'' (Tibet). Tuber geophyte | |||
| * *''Amitostigma monanthum'' var. ''monanthum'' (SE. Tibet to C. China). Tuber geophyte | |||
| * ''Amitostigma papilionaceum'' (China - NW. Sichuan). | |||
| * ''Amitostigma parciflorum'' (China). | |||
| * ''Amitostigma physoceras'' (China - Sichuan).. | |||
| * ''Amitostigma pinguicula'' (China). | |||
| * ''Amitostigma simplex'' (hina - W. Sichuan, SW. Yunnan).. | |||
| * ''Amitostigma tetralobum'' (China - SW. Sichuan, N. Yunnan). | |||
| * ''Amitostigma thailandicum'' (Thailand). | |||
| * ''Amitostigma tibeticum'' (Tibet). | |||
| * ''Amitostigma tominagai'' (Taiwan). | |||
| * ''Amitostigma trifurcatum'' (China).. | |||
| * ''Amitostigma yueanum'' (China - Yunnan). | |||
| ] | |||
| ] | |||
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See text
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Amitostigma Schltr. 1919, is a genus in the orchid family (Orchidaceae), subfamily Orchidoideae, tribe Orchideae, subtribe Orchidinae, alliance Orchis
It is an exclusively Asian genus of 27 orchids, growing in the alpine habitats of east Asia, India, eastern Himalaya, China, and Japan to Kuril Islands, of which 22 grow species in China.
These are dwarf terrestrial orchids, including some saprophytic species. The globose or ovoid tubers (1-1,5 cm) of these autotrophic plants are fleshy and not lobed, with several slender roots. New shoots grow each tuber.
The stem is usually erect, with 1 (or rarely 2 or 3) basal or cauline (= belonging to the stem) leaves. The length of the stem can vary between 5 and 45 cm.
The green leaf blade is not articulate and can have an oblong, lanceolate, elliptic, or ovate form, even within the same species (see A. lepidum). The leaves appear at the time of expansion of the flower (= anthesis).
The terminal inflorescence is racemose, seldom subcapitate. The floral bracts are often lanceolate. The cylindrical to fusiform ovary is resupinate (= turned upside down).
Each inflorescence shows many (rarely 1 or 2) flowers. These are also resupinate and usually twisted to one side.
The sepals are completely separate from each other, with an oblong to ovate appearance, and usually 1-veined. The erect petals are straight, often slightly broader than the sepals. The 3- or 4-lobed lip is usually longer and broader than the petals and sepals, spurred at the base. The mid-lobe is oblong, square, or ovate. The margin of the lip is often slightly undulate.
They have a characteristic short column. The erect anthers are cohesive with the column through its broad base or back.. They have two parallel locules with farinaceous, sectile pollinia. The small rostellum is beak-shaped, attached with its folded end to the viscidium. The two protuding stigmas are slightly club-shaped
The capsule is suberect.
The color may vary within the same species : Amitostigma lepidum may show a purple lip with white margins, or a white lip with purple dots or a totally white lip. Even the leaves may vary from lanceolate to ovate within the same species.
After flowering, the leaves turn yellow color and die off.The plants then starts its summer dormancy for several months. This cycle is well adapted to a climate which is hot and dry in summer.
Species
- Amitostigma alpestre : Alpine Chicken Orchid (Taiwan).
- Amitostigma amplexifolium (SC. China)..
- Amitostigma basifoliatum (China).
- Amitostigma bifoliatum (China).
- Amitostigma capitatum (China) .
- Amitostigma dolichocentrum (China) .
- Amitostigma faberi (China)
- Amitostigma farreri (Tibet)..
- Amitostigma gonggashanicum (China).
- Amitostigma gracile (China to Temp. E. Asia).
- Amitostigma keiskei (Japan)
- Amitostigma keiskeoides (Vietnam).
- Amitostigma kinoshitae (S. Kuril Is., Japan - Hokkaido, N. Honshu).
- Amitostigma kurokamianum (Japan - Kyushu: Mt. Kurokami).
- Amitostigma lepidum : Okinawa Orchid (Japan - S. Kyushu to Nansei-shoto.
- Amitostigma monanthum (SE. Tibet to C. China).
- *Amitostigma monanthum var. forrestii (Tibet). Tuber geophyte
- *Amitostigma monanthum var. monanthum (SE. Tibet to C. China). Tuber geophyte
- Amitostigma papilionaceum (China - NW. Sichuan).
- Amitostigma parciflorum (China).
- Amitostigma physoceras (China - Sichuan)..
- Amitostigma pinguicula (China).
- Amitostigma simplex (hina - W. Sichuan, SW. Yunnan)..
- Amitostigma tetralobum (China - SW. Sichuan, N. Yunnan).
- Amitostigma thailandicum (Thailand).
- Amitostigma tibeticum (Tibet).
- Amitostigma tominagai (Taiwan).
- Amitostigma trifurcatum (China)..
- Amitostigma yueanum (China - Yunnan).