Key for Microtea Sw.

1	Raceme rarely more than 4 cm long; stamens 5; fruit with pale, non-glochidiate spines Microtea debilis
1'	Raceme up to 10 cm long; stamens 6-9; fruit with dark brown, glochidiate (tip recurved with 4 retrorse bristles) spines Microtea maypurensis