KEY TO SPECIES OF THE GENUS JUMELLEA SCHLTR.

1. Stem absent or very short ........................................................................................... 2

— Stem present .............................................................................................................. 3

2. Leaves up to 40 cm long .................................. 1. Jumellea maxillarioides (Ridl.) Schltr.

— Leaves longer than 40 cm ......................................... 2. Jumellea arachnantha (Rchb. f.)

3. Leaves longer than 9 cm ............................................ 3. Jumellea arborescens H. Perrier

— Leaves up to 9 cm long ............................................................................................... 4

4. Peduncle less than 10 mm long ................... 4. Jumellea anjouanensis (Finet) H. Perrier

— Peduncle over 10 mm in length .................................................................................. 5

5. Spur less than 8 cm long ............................................... 5. Jumellea pailleri F.Rakotoar.

— Spur over 8 cm long ......................................... 6. Jumellea comorensis (Rchb. f.) Schltr.