|Nervilia gracilis Aver.|
Nervilia gracilis – a new species for science discovered in northern Vietnam was described and illustrated. This species belongs to complex of miniature 1-flowered species and has the closest relation to Laotian N. calcicola, from which it differs in keeled disk of the lip and very small membranaceous leaves.
Key words: Flora of Vietnam, Nervilia gracilis, new orchid species, taxonomy, plant diversity
Ecology: Primary broad-leaved, mixed and coniferous humid shady evergreen forests on rocky limestone at elev. 900-1400 m a.s.l. Fl. March - April. Fruits May - June. Very rare (EN).
Distribution: Vietnam (provinces: Cao Bang, Ha Giang).
Leonid V. Averyanov. 2011. Nervilia gracilis – A New Orchid Species from Northern Vietnam. Taiwania. 56(1): 50-53. http://tai2.ntu.edu.tw/taiwania/pdf/tai.2011.56.1.50.pdf
Lin, T.-P. and W.-M. Lin. 2009. Newly Discovered Native Orchids of Taiwan (III). Taiwania 54: 323-333. http://www.tsps.org.tw/document/paper/new/022%20Newly%20Discovered%20Native%20Orchids%20of%20Taiwan%20(III).pdf