Children (39 direct children, 44 direct and indirect children):
Pterothamnion plumula
(tree size 4)
Pterothamnion crispum
(tree size 1)
Pterothamnion heteromorphum
Pterothamnion nodiferum
Pterothamnion aciculare
Pterothamnion cuspidatum
Pterothamnion flexile
Pterothamnion francisianum
Pterothamnion manifestum
Pterothamnion ramulentum
Pterothamnion recurvatum
Pterothamnion horridum
Pterothamnion intermedium
Pterothamnion capense
Pterothamnion pectinatum
Pterothamnion polysporum
Pterothamnion squarrulosum
Pterothamnion tepocense
Pterothamnion villosum
Pterothamnion yezoense
Pterothamnion confusum
Pterothamnion latiramosum
Pterothamnion spinescens
Pterothamnion antarcticum
Pterothamnion minutissimum
Pterothamnion orbignianum
Pterothamnion polyacanthum
Pterothamnion simile
Pterothamnion abietinum
Pterothamnion americanum
Pterothamnion cristatum
Pterothamnion floccosum
Pterothamnion lapponicum
Pterothamnion myurum
Pterothamnion ptilota
Pterothamnion pylaisaei
Pterothamnion refractum
Pterothamnion reversum
Pterothamnion ternifolium