Microstomum rubromaculatum
Microstomum bioculatum
Microstomum gabriellae
Microstomum punctatum
Microstomum paradii
Microstomum hamatum
Microstomum coerulescens
Microstomum breviceps
Microstomum spiriferum
Microstomum ornatum
Microstomum caudatum
Microstomum crildense
Microstomum septentrionale
Microstomum spiculifer
Microstomum melanophthalmum
Microstomum jenseni
Microstomum lucidum
Microstomum ulum
Microstomum mundum
Microstomum bispirale
Microstomum papillosum
Microstomum rhabdotum
Microstomum littorale
Microstomum philadelphicum
Microstomum canum
Microstomum davenporti
Microstomum lineare
(tree size 1)
Microstomum dermophthalmum
Microstomum trichotum
Microstomum mortenseni
Microstomum groenlandicum
Microstomum giganteum
Microstomum crildensis
Microstomum achroophthalmum
Microstomum unicolor
Microstomum laurae
Microstomum edmondi
Microstomum zicklerorum
Microstomum artoisi
Microstomum marisrubri
Microstomum bispiralis
Microstomum caerulescens
Microstomum inerme
Microstomum leucops
Microstomum tchaikovskyi
Microstomum tortipenis