Leptodermis

Keys in Flora of Bhutan by AJC Grierson and D G Long, Vol.2 Part 1 (1999):

1. Bracteole pairs not exceeding hypanthium .. 1. L. ludlowii
+ Bracteole pairs exceeding hypanthium  .. 2
2. Flower-heads terminating short shoots on old wood, overtopped by new growth .. 2. L kumaonensis
+ Flower heads terminating new growth .. 3
3. Corolla tube less than 11.5mm; main veins of leaf 3-5 pairs …. 3. L. stapfiana
+ Corolla tube more than 11.5mm; main veins of leaf 5-9 pairs …. 4. L. amoena
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As per keys at link:
Leptodermis kumaonensis has corolla pubescent outside and Leptodermis lanceolata has corolla glabrous outside;

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As per efi thread;
Three species are given in Osmaston 1927 (A Forest Flora for Kumaon) as differentiated as:

1A. Corolla glabrous outside ……… L. lanceolata
1B. Corolla pubescent outside (minutely hairy)……………..
       2A. Leaves exceeding 5 cms in length, lateral nerves 6-10 pairs …… L. kumaonensis
       2B. Leaves not exceeding 5 cms, lateral nerves 4-6 pairs ……………. L. riparia

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As per efi thread:
L. kumanonensis: Flowers are 3-5 fascicled on ends of lateral short branches (FOC).
L. stapfiana: Flowers are borne in more dense clusters: Inflorescence on current growth; compact clusters of up to 20 flowers at shoot apex at upper nodes and at apex of any lateral shoots.. (FBP)

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Leptodermis amoena Springate (Native to: East Himalaya as per POWO)

  

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Leptodermis virgata Edgew. ex Hook.f. (Himalaya to India (Punjab): East Himalaya, India, West Himalaya as per POWO)
   

BSI Flora of India Checklist (Distribution):

Name Distribution
Leptodermis amoena Arunachal Pradesh
Leptodermis griffithii Arunachal Pradesh, Manipur, Meghalaya, Nagaland, Sikkim
Leptodermis kumaonensis Uttaranchal
Leptodermis lanceolata Himachal Pradesh, Kashmir, Meghalaya, Sikkim, Uttarakhand, Uttar Pradesh
Leptodermis ludlowii Sikkim
Leptodermis parkeri Himachal Pradesh, Punjab
Leptodermis riparia Himachal Pradesh, Uttar Pradesh
Leptodermis scabrida Arunachal Pradesh
Leptodermis stapfiana Assam
Leptodermis virgata Himachal Pradesh, Jammu & Kashmir, Punjab
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Leptodermis lanceolata Wall. in Roxb. (Temperate Himalaya, Kashmir, Nepal, Bhutan and India (Assam))
Leptodermis virgata Edgew. in Aitch. (Western Himalayas, Pakistan (Hazara, Murree, Salt Range))

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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):
Leptodermis kumaonensis Parker (2500-3800 m; Himalaya (Garhwal to Bhutan))
Leptodermis lanceolata Wall. (2000-3500 m; Himalaya (Punjab to Bhutan), Assam)
Leptodermis stapfiana H. Winkl. (1400-3500 m; Himalaya (Nepal to Bhutan), Assam)

Leptodermis kumaonensis R. Parker [Bhutan, N India (Uttarakhand), Nepal].
Leptodermis ludlowii Springate [Bhutan, NE India (Sikkim)].
Leptodermis scabrida J. D. Hooker [NE India (Assam)].

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Pl. go through‎ Leptodermis ‎(Rubiaceae) page with images of species in efloraofindia.

If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, or can identify unidentified images, it will be really nice. 

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Pl. go through‎ Leptodermis‎‎‎ ‎(‎Rubiaceae) page with images of species in efloraofindia.

If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, or can identify unidentified images, it will be really nice.

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Pl. go through‎ Leptodermis‎ ‎‎(Rubiaceae) page with comparative images of species in efloraofindia. On clicking the link of species, one can check the complete details. Genus pages generally give details of most of the species found in India.

I request you to pl. go through & point out mistakes, if any. I hope this will aid in identifications in future. If anybody can send images of other species of this genus (for incorporation in the website), if any, or can identify unidentified images, it will be really nice.