Crepidium biauritum

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Himalaya to China (W. & S. Yunnan) and Indo-China: Andaman Is., Assam, Bangladesh, China South-Central, Laos, Myanmar, Nepal, Nicobar Is., Thailand, West Himalaya as per POWO;
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Andaman Is.; Assam; Bangladesh; China South-Central; Laos; Myanmar; Nepal; Nicobar Is.; Thailand; West Himalaya as per Catalogue of Life;
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Plants terrestrial. Stem cylindric, fleshy, with several nodes, ± enclosed in membranous sheaths. Leaves usually 3, ovate, oblong-ovate, or subelliptic, 5-10 × 1.8-5 mm, base contracted into a sheathlike, amplexicaul petiole 1.5-3.5 cm, apex acuminate. Inflorescence erect; peduncle 15-21 cm, wingless; rachis 7-9 cm, 20-30-flowered; floral bracts reflexed, narrowly lanceolate, 4.5-6 mm. Flowers purplish red to green, ca. 7 mm in diam.; pedicel and ovary 4-5 mm. Dorsal sepal suboblong or oblong-lanceolate, 6-6.5 × 1.5-2 mm, margin revolute, apex obtuse; lateral sepals narrowly oblong-ovate, ca. 5 × 1.5-2 mm, base oblique, apex obtuse. Petals narrowly linear, ca. 5.5 × 0.3 mm; lip superior, rhombic-elliptic in outline, 4-5.5 × ca. 3 mm, base with a pair of auricles decurrent backward embracing column apex, unlobed, central part with 2 short lamellae, and between lamellae a longitudinal groove; auricles ovate or narrowly ovate, 2-3 mm.

Plant 2-2.5 cm
Humus rich soil
India: Assam, Arunachal Pradesh, Sikkim; Bhutan, China, Japan, Korea, Myanmar, Thailand
(Attributions- Compiled from secondary sources listed in references by Kishor Deka for the Assam Biodiversity Portal project from India Biodiversity Portal)
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Crepidium purpureum (Lindl.) Szlach. : 6 posts by 3 authors. Attachments (6)- around 400 kb each.

Location: Suryabinayak, Nepal  
Date: 29 July 2018
Elevation: 4700 ft.
Habit : Wild
Syn: Malaxis purpurea (Lindl.) Kuntze.

Very interesting colour. Yes this should be Crepidium purpureum (= Malaxis purpurea).  

Biaurita all of these

This has been re-identified as Crepidium biauritum (Lindl.) Szlach. syn: Malaxis biaurita (Lindl.) Kuntze by …
Request to update  in the efi page accordingly.
…: I guess you need to revisit all Crepidium and Malaxis in the efi page for the correctness of ID.

This is Crepidium biaurita. Sorry for misidentification earlier.

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SK1296 17 JUL 2018 : 4 posts by 3 authors. Attachments (8)- around 500 kb each.
Location:  Gyaneswor, Kathmandu, Nepal
Date: 9 July 2018
Altitude: 4000 ft.
Crepidium ?? Malaxis ??

Looks like Crepidium purpureum to me, with two lobes on the top of labellum.
Thanks a lot for sharing.

This is Crepidium biaurita.
Sorry for misidentification.

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SK31JUL8-2016:ID : 13 posts by 3 authors. Attachments (3)
Malaxis josephiana ??  or acuminata ???

Enclosing some pictures for identification verification.
Location : Nagarkot  Nepal
Altitude:  6500ft.
Date: 8 July 2016 

One more picture !

Crepidium purpureum (Malaxis purpurea).

Thank you for your efforts to ID the plant but some experts here say it us M. josephiana ! The leaves and stems do not look like it matches with M. purpurea because it has colored shades in the base ! I am still confused !

May I know which expert said it is josephianum??? Crepidium josephianum illustration is available in King and Pantling and it is so different that I want to make a new genus out of it, but It still stays within the limits of Crepidium so I didnt bother.
Please find a plate of josephianum attached I am sure you will agree that your plant is atleast not josephianum.
I am sure it is purpureum because I have been working on purpureum and acuminatum for one year now and I have images and illustrations from all over its distribution including the type locality in Sri Lanka.
Hope this helps. Attachments (2)

I just realised that my friend Bhakta did make some mistakes in his book on orchids of Nepal.

In fact his images Malaxis biaurita, Malaxis josephiana, Malaxis khasiana, Malaxis acuminata and Malaxis purpurea are all same and all are Malaxis purpurea.
There has been a lot of confusion in this group which was started by Seidenfaden himself and it was carried forward by his followers. Sad but true.
Here attached are images of three species. I am still trying to make out what is first one as I believe its a new species. Second one is Crepidium purpureum and third one is Crepidium acuminatum.
Hope this helps. Attachments (1)

Thank you very much. Only confusion is stem base is purplish in Purpurea whereas my sample is pure green ! By the way  you are the expert and I am not.

Stem base colour has no taxonomic value sir. Infact Crepidium purpureum can have yellow, orange or green coloured flower too. Originally from Sri Lanka the flowers were red hence named purpurea.
Here is a flower pic from Sri Lanka (red) and Uttarakhand (yellow).
These pics are large so may not go on to our group. Attachments (2)

Thank you indeed ! By the way I shall forward some old pictures of Malaxis for further verification!

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SK2094 05 August 2019 : 3 posts by 2 authors. Attachments (7)- around 600 kb each.

Location: Gyaneswor, Kathmandu
Date: 30 July 2019
Elevation: 1300 m.
Habitat : Wild
Crepidium biauritum (Lindl.) Szlach. syn: Malaxis biaurita (Lindl.) Kuntze. ??

yes. Crepidium biauritum

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Crepidium biauritum (Lindl.) Szlach. : 8 posts by 3 authors. 5 images- 2 to 5 mb each.
Location: Gyaneswor, Kathmandu, Nepal
Date: 20 July  2020
Altitude: 1300 m.

Yes this is Crepidium biauritum.