Germainia undefined-1

Teerawatananon, A., Sungkaew, S., Boontia, V. & Hodkinson, T. R., 2013, A taxonomic revision of Germainia (Andropogoneae: Poaceae) in Thailand, Blumea 57 (3), pp. 221-228 : 224

KEY TO THAI GERMAINIA SPECIES

1. Basal sheaths densely covered with white to pale yellow lanate hairs.......................... 3. G. lanipes

1. Basal sheaths not covered with lanate hairs.......... 2

2. Awn well-developed, at least 2 cm long.............. 3

2. Awn reduced 3 – 4.7 mm long............. 7. G. tenax

3. Plant up to 15 cm tall. Lower glumes of sessile spikelets membranous to chartaceous...................... 4

3. Plant more than 20 cm tall. Lower glumes of sessile spikelets coriaceous.................................... 5

4. Inflorescence well exserted; uppermost sheath with reduced blade; racemes capitate. Lower glumes of sessile spikelets apex muticous or truncate or slightly denticulate. Ligule an eciliate membrane...................... 4. G. pilosa

4. Inflorescence enclosed in uppermost sheath with well-developed blade; racemes elongate. Lower glumes of sessile spikelets apex dentate. Ligule a ciliate membrane............................................ 5. G. thailandica

5. Leaf-blade linear-lanceolate, up to 5 cm long. Sessile spikelets 2 – 3 per raceme............................ 6

5. Leaf-blade linear, more than 7 cm long. Sessile spikelets more than 4 per raceme................1. G. capitata

6. Three sessile and three pedicelled spikelets per raceme; lower glumes of sessile spikelets truncate to muticous without lateral teeth..................... 2. G. khasyana

6. Two sessile and one pedicelled spikelet per raceme; lower glumes of sessile spikelets truncate with lateral caudate teeth................................ 6. G. thorelii