1. Flowers solitary, leaves not connected to an aboveground vegetative stalk……………Tamija flagellaris
1. Flowers in an inflorescence, leaves connected to aboveground vegetative stalk………….2
2. Inflorescence held on a basal stalk from the rhizome……………………………………………3
3. Inflorescence cone-shaped, bracts tightly-spaced and closed………………………………..4
3. Inflorescence not a cone, bracts absent or lax and open……………………………………….10
4. White reticulation present on leaf sheathing, no pulvinus………5
5. Stilt roots present, white reticulation on bracts………………………….Hornstedtia reticulata
5. No stilt roots or white reticulation on bracts………………………………Hornstedtia sp. (9)
4. No reticulation on leaf sheathing, pulvinus present………………..6
6. No petiole, ligule short…………………………………………………………………….7
7. Red leaf underside color, no leaf underside hair, ligule not cleft……….Zingiber sp. (25)
7. No leaf underside color, underside leaf hair present, ligule not cleft….Zingiber sp. (26)
7. No leaf underside color, no underside leaf hair, ligule cleft……..Zingiber accuminatum
6. No petiole, ligule long……………………………………………………………………..8
8. Ligule cleft…………………………………………………………………………………Zingiber sp. (13)
8. Ligule not cleft………………………………………………………………………. Zingiber officinale
6. Short petiole, no leaf underside hair or coloration ……………………………………….9
9. Ligule short and cleft………………………………………………………………Zingiber sp. (14)
9. Ligule short and normally curved…………………………………………….Zingiber sp. (11)
10. Entire inflorescence not subtended by bracts……………………………………. Morphospecies (4)
10. Entire inflorescence subtended by bracts…………………………………………..11
11. All flowers clustered on the end of the inflorescence in one plane (lily-shaped)………..12
12. Ligules long, leaf surfaces have red blotches………………………….Etlingera brevilabrum
12. Ligules long, leaf surfaces green……………………………………………Etlingera inundata
12. Ligules short and cleft……………………………………………………………..13
13. Hair present on leaf underside and sheathing………………………….Morphospecies (18)
13. Hair not present on leaf underside and sheathing…………………….Morphospecies (10)
12. Ligules short and not cleft………………………………………………………..14
14. Hair present on the leaf margins, peduncle short………………Amomum kinabaluensis
14. Hair not present on leaf margins, peduncle long……………..Amomum longpedunculis
11. Flowers clustered in cone shape………………………………………………….15
15. Petiole short…………………………………………………………………………Etlingera sp. (21)
15. Petiole long………………………………………………………………………….16
16. Bracts and petals pinkish-red……………………………………………Etlingera eliator
16. Bracts white and flowers orange-yellow…………………………….Morphospecies (28)
2. Inflorescence held in any other location……………………………………………………………..17
17. Inflorescence on the terminus of the leafy stalk…………………………………….18
18. Ligule cleft…………………………………………………………………………………..19
19. No petiole, dark purple leaf underside color………………………………..Globba sp. (15)
19. Short petiole, no underside leaf coloration…………………………………..Globba franscici
18. Ligule not cleft……………………………………………………………………………… 20
20. Ligule long, underside leaf hair present……………………………………….Alpinia hansenii
20. Ligule short, underside leaf hair not present…………………………………21
21. Hair present on leaf margin and leaf sheathing…………………………Globba sp. (17)
21. Hair not present on leaf margin and leaf sheathing……………Hedychium muluense
17. Inflorescence on side shoot or appears to be on a side shoot……………………………22
22. Appears to be on side shoot but is actually basal………………..Plagiostachys crocydocalyx
22. Actually is on side shoot, red leaf undersides, not cleft ligules………..Morphospecies (2)
22. Actually is on side shoot, no underside color, cleft ligules…………Morphospecies (19)