Cephalanthera longifolia (L.) Fritsch

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Cephalanthera Rich., Mém. Mus. Hist. Nat. 4: 51 (1818).

Synonyms:
Callithronum Ehrh., Beitr. Naturk. 4: 148 (1789).
Lonchophyllum Ehrh., Beitr. Naturk. 4: 148 (1789).
Dorycheile Rchb., Deut. Bot. Herb.-Buch: 56 (1841).
Xiphophyllum Ehrh., Beitr. Naturk. 4: 148 (1879).
Eburophyton A.Heller, Muhlenbergia 1: 48 (1904).
Tangtsinia S.C.Chen, Acta Phytotax. Sin. 10: 194 (1965).
Common name: Carey’s Bulbophyllum
Distribution: This is a very small but widespread genus, represented by 15 species distributed in Africa, America N, and Aisa. In India the genus is represented by single species which is widespread in the Himalayas.

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New article published : 10 posts by 4 authors. Attachments (1)- 075 2018 Cephalanthera NORDIC JOURNAL OF BOTANY.pdf- 728 kb.
Wish you a very happy Guru Poornima. I also take this opportunity to share with you my 75th scientific article which was published today concidently. Hope you will find it interesting.
Chung, M.Y., N.T. Lu,  J. López‐Pujol, S. Herrando‐Moraira, J.M. Chung, H.Z. Tian, K. Suetsugu, T. Kawahara, T. Yukawa, M. Maki, P. Kumar, Y.‐D. Kim & M.G. Chung. 2018. Effect of historical factors on genetic variation in the three terrestrial orchids Cephalanthera erecta, Cephalanthera falcata, and Cephalanthera longibracteata on the Korean Peninsula differing in breeding systems. Nordic Journal of Botany  36: e01862; http://doi.org/10.1111/njb.01862
Note: Guru Poornima (Guru Worship on a Summer Full Moon day) is an Indian festival (also in Nepal) dedicated to teachers.

Congrats … It is a nice paper.
Past history has played role in diversification of taxa. Glacial expansion and retreat had been important in present day distribution of taxa and evolution of new species/ subspecies etc on account of the new habitats occupied by them.