Gastrochilus kadooriei

Kumar, Pankaj, Gale, Stephan W., Kocyan, Alexander, Fischer, Gunter A., Averyanov, Leonid, Borosova, Renata, Bhattacharjee, Avishek, Li, Ji-Hong & Pang, Kuen Shum, 2014, Gastrochilus kadooriei (Orchidaceae), a new species from Hong Kong, with notes on allied taxa in section Microphyllae found in the region., Phytotaxa 164 (2), pp. 91-103 : 100-101

Key to Gastrochilus kadooriei and allied species:

Key for sterile specimens with a persistent peduncle

1. Stem internode length 1/3rd or more of the leaf length ........................................................................................ G. kadooriei

- Stem internode length less than 1/3rd of the leaf length ........................................................................................................ 2

2. Dry peduncle more than 2 cm long ........................................................................................................................ G. distichus

- Dry peduncle 2 cm long or less.............................................................................................................................................. 3

3. Stem internode 4.5 cm long or more ..................................................................................................................................... 4

- Stem internode less than 4.5 cm long .................................................................................................................................... 5

4. Leaf more than 2 cm long ................................................................................................................................ G. formosanus

- Leaf less than 2 cm long ............................................................................................................................. G. fuscopunctatus 5. Leaf ovate, apex tridentate ......................................................................................................................... G. pseudodistichus

- Leaf lanceolate, apex acuminate ...................................................................................................................... G. corymbosus

Key for fertile specimens

1. Lip epichile bearing a callus, margin alate............................................................................................................................. 2

- Lip epichile ecallus, margin not alate..................................................................................................................................... 5

2. Epichile wings broad, extending from junction with hypochile to apical margin of epichile .............................................. 3

- Epichile wings narrow, restricted to base of epichile close to junction with hypochile only .................... G. pseudodistichus

3. Epichile hirsute .................................................................................................................................................. G. formosanus

- Epichile glabrous .................................................................................................................................................................. 4

4. Inflorescence racemose, peduncle more than 2 cm long ....................................................................................... G. distichus

- Inflorescence corymbose, peduncle less than 2 cm long ................................................................................. G. corymbosus

5. Epichile glabrous, less than 1/3 of the height of the hypochile ........................................................................... G. kadooriei

- Epichile hirsute at centre, half or more than half of the height of the hypochile ........................................ G. fuscopunctatus