Children (22 direct children, 24 direct and indirect children):
Gomphonema truncatum
Gomphonema acuminatum
Gomphonema parvulum
Gomphonema olivaceum
Gomphonema gracile
Gomphonema affine
Gomphonema clavatum
Gomphonema subclavatum
(tree size 1)
Gomphonema montanum
Gomphonema constrictum
Gomphonema angustatum
(tree size 1)
Gomphonema abbreviatum
Gomphonema clevei
Gomphonema dichotomum
Gomphonema grovei
Gomphonema intricatum
Gomphonema tenellum
Gomphonema turris
Gomphonema ventricosum
Gomphonema rhombicum
Gomphonema acidoclinatum
Gomphonema auritum