Kaempferia
Creators: name: Insisiengmay, Oudomphone
name: Newman, Mark Fleming
name: Haevermans, Thomas
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Zingiberales
Zingiberaceae
Kaempferia

description: Key to species of Kaempferia in Cambodia and Lao PDR
1. Flowers appearing before leaves (subgenus Protanthium) ............................................................... 2
– Flowers and leaves appearing at the same time (subgenus Kaempferia) ......................................... 3
2. Leaves 2–4; blade oblong, green or purple, pubescent; petiole 10–20 mm long ......... K. rotunda L.
– Leaves 5–7; blade elliptic, upper surface glabrous, lower pubescent; petiole absent ........................ .................................................................................... K. xiengkhouangensis Picheans. & Phokham
3. Ligule present,> 2 mm long and clearly visible; flowers flat, directed upward ............................... 4
– Ligules very small, ± 2 mm long or absent; flowers cup-shaped, directed upward or sideward, or flat, directed upward ................................................................................................................................ 8
4. Leaves erect, blade oblong ..................................................... K. sawanensis Picheans. & Koonterm
– Leaves flat on the ground, blade oblong or ovate to orbicular ......................................................... 5
5. Lateral staminodes and labellum pink to purple; anther crest pink, apex non bifid ........................... ............................................................................................................ K. marginata Carey ex Roscoe
– Lateral staminodes white; labellum white with violet patch; anther crest white, apex bifid ............ 6
6. Anther crest rectangular, bifid, divided by 1 mm, apex rounded-emarginate ....... K. laotica Gagnep.
– Anther crest elliptic or cuneate-flabellate, bifid, divided to the base ................................................ 7
7. Anther crest elliptic, 4× 4 mm, lobes rounded .............................................................. K. galanga L.
– Anther crest cuneate-flabellate, 6 × 7 mm, lobes emarginate-acute ........... K. harmandiana Gagnep.
8. Nyctanthous (night-flowering) .......................................................................................................... 9
– Hemeranthous (day-flowering) ....................................................................................................... 10
9. Ligule present, <1 mm long; blade ensiform, coriaceous; lateral staminodes spathulate; stamen sessile ........................................................................................................................ K. fissa Gagnep.
– Ligule absent; blade subulate, soft; lateral staminodes obovate; stamen attached at mouth of floral tube, filament 2 mm long .................................................................................... K. filifolia K.Larsen
10. Bracteoles two per flower, fused at base, outside of floral tube puberulous ....................................... ............................................................................................. K. gigantiphylla Picheans. & Koonterm
– Bracteoles two per flower, opposite, outside of floral tube glabrous ...............................................11
11. Ovary puberulous ................................................................................... K. parviflora Wall. ex Baker
– Ovary glabrous ................................................................................................................................ 12
12. Leaf one, blade flat on the ground, orbicular .................................................. K. siamensis Sirirugsa
– Leaf one to three, blade flat on the ground to erect, oblong to ovate ............................................. 13
13. Floral tube ± 55 mm long; lateral staminodes obovate ................................................................... 14
– Floral tube Ẑ 55 mm long; lateral staminodes oblong or obovate or spatulate ............................... 15
14. Rhizome short, vertical; lateral staminode and labellum pink, anther crest entire or slightly crenate with pink patch ................................................................................................... K. larsenii Sirirugsa
– Rhizome short horizontal and very slender; lateral staminodes and labellum pure white; anther crest bifid and pure white ....................................................... K. champasakensis Picheans. & Koonterm
15. Floral orientation sideward; floral tube> 90 mm long; staminodes oblong, 40 × 12 mm; anther crest obovate, 10 × 6 mm; ovary 8× 3.5 mm diameter ..................................... K. nemoralis Insis. sp. nov.
– Floral orientation upward; floral tube ± 90 mm long; staminodes oblong or spatulate; anther crest flabellate or narrowly ovate to ovate; ovary 5× 0.5–3 mm diameter .............................................. 16
16. Floral tube 75-90 mm long; staminodes oblong, 30 × 10 mm; anther crest flabellate, 3 × 5 mm to 12 × 6 mm, white; ovary 5 × 3 mm diameter ......................................... K. pascuorum Insis. sp. nov.
– Floral tube 55-62 mm long; staminodes spatulate, 20 × 12–16 mm; anther crest narrowly ovate to ovate, 4–6× 3 mm; ovary 5 × 0.5 mm diameter ..................... K. attapeuensis Picheans. & Koonterm
description: Published as part of Insisiengmay, Oudomphone, Newman, Mark Fleming & Haevermans, Thomas, 2020, Two new species of Kaempferia L. (Zingiberaceae) from Cambodia and Lao PDR, pp. 1-15 in European Journal of Taxonomy 712 on pages 11-12, DOI: 10.5852/ejt.2020.712, http://zenodo.org/record/4019066