Dimeria, Brown, 1810

Teerawatananon, Atchara, Boontia, Veeraya, Chantarasuwan, Bhanumas, Hodkinson, Trevor R. & Sungkaew, Sarawood, 2014, A taxonomic revision of the genus Dimeria (Poaceae: Panicoideae) in Thailand, Phytotaxa 186 (3), pp. 137-147 : 138

Key to Thai species of Dimeria

1. Racemes solitary................................................................................................................................................................................2.

- Racemes more than one.....................................................................................................................................................................4.

2. Spikelets 4.5–5 mm long. Rhachis 0.8–1.2 mm wide ....................................................................................... D. kurumthotticalana

- Spikelets 3–4 mm long. Rhachis 0.4–0.7 mm wide ..........................................................................................................................3.

3. Upper glumes wingless........................................................................................................................................................... D. kurzii

- Upper glumes winged......................................................................................................................................................... D. sinensis

4. Racemes with filiform rhachis............................................................................................................................................ D. velutina

- Racemes with flattened or triangular rhachis ....................................................................................................................................5.

5. Spikelets 1–3(–4.5) mm long; upper glumes wingless. Rhachis 0.2–0.4 mm wide.................................................... D. ornithopoda

- Spikelets 4–6 mm long; upper glumes winged. Rhachis 0.6–1.2 mm wide......................................................................................6.

6. Upper glumes broadly winged. Wings rugose........................................................................................................................ D. kerrii

- Upper glumes narrowly winged. Wings not rugose ..........................................................................................................................7.

7. Rhachis 0.7–0.8 mm wide, rhachis internodes 1.5–2(–2.5) mm long. Upper glumes acute, narrowly winged all along the keel ...... ........................................................................................................................................................................................ D. fuscescens

- Rhachis 0.8 − 1.2 mm wide, rhachis internodes 0.8–1.5 mm long. Upper glumes acuminate to long acuminate and slightly recurved, narrowly winged in the upper one third of glume to the apex........................................................................... D. kurumthotticalana