Children (30 direct children, 30 direct and indirect children):
Physosiphon emarginatus
Physosiphon asaroides
Physosiphon bragae
Physosiphon herzogii
Physosiphon hystrix
Physosiphon obliquipetalus
Physosiphon andinus
Physosiphon punctulatus
Physosiphon serrulatus
Physosiphon andinum
Physosiphon guatemalensis
Physosiphon greenwoodii
Physosiphon asperrimus
Physosiphon minor
Physosiphon spiralis
Physosiphon bangii
Physosiphon bradei
Physosiphon carinatus
Physosiphon cooperi
Physosiphon deregularis
Physosiphon echinanthus
Physosiphon eximia
Physosiphon inaequisepalus
Physosiphon lansbergii
Physosiphon lindleyi
Physosiphon minutiflorus
Physosiphon ochraceus
Physosiphon parahybunensis
Physosiphon pubescens
Physosiphon lentiginosa