Children (23 direct children, 23 direct and indirect children):
Laennecia pimana
Laennecia microglossa
Laennecia schiedeana
Pineland horseweed
Laennecia spellenbergii
Laennecia turnerorum
Turner's horseweed
Laennecia altoandina
Laennecia araneosa
Laennecia chihuahuana
Laennecia confusa
Laennecia coulteri
Coulter's horseweed
Laennecia eriophylla
Cochise horseweed
Laennecia filaginoides
Trans-pecos horseweed
Laennecia sophiifolia
Leafy horseweed
Laennecia alpina
Laennecia gnaphalioides
Laennecia artemisiifolia
Laennecia prolialba
Laennecia parvifolia
Laennecia mapimiana
Laennecia lasseriana
Laennecia artemisioides
Laennecia pinnatifida
Laennecia mima