Eupatorium critoniforme Urb. accepted as Urbananthus critoniformis (Urb.) R.M.King & H.Rob. (original description)
Eupatorium geranifolium Urb. accepted as Chromolaena geranifolia (Urb.) R.M.King & H.Rob. (original description)
Eupatorium harrisii Urb. accepted as Ageratina riparia (Regel) R.M.King & H.Rob. (original description)
Eupatorium imbricatum (Griseb.) Urb. accepted as Critonia imbricata Griseb. (original description)
Eupatorium inaequidens Urb. accepted as Critonia inaequidens (Urb.) R.M.King & H.Rob. (original description)
Eupatorium macropus (DC.) Urb. accepted as Critonia macropoda DC. (original description)
Eupatorium polyodon Urb. accepted as Koanophyllon polyodon (Urb.) R.M.King & H.Rob. (original description)
Eupatorium portoricense Urb. accepted as Critonia portoricensis (Urb.) Britton & P.Wilson (original description)
Eupatorium resinifluum Urb. accepted as Ageratina resiniflua (Urb.) R.M.King & H.Rob. (original description)
Eupatorium villosum var. dolicholepis Urb. accepted as Koanophyllon dolicholepis (Urb.) R.M.King & H.Rob. (original description)
Mikania fragilis Urb. (original description)
Mikania fragilis var. leptodon Urb. (original description)
Mikania odoratissima Urb. accepted as Mikania buchii Urb. (original description)
Mikania pachyphylla Urb. (original description)
Mikania porosa Urb. (original description)
Pectis tenuicaulis Urb. (original description)
Piptocarpha tetrantha Urb. (original description)
Porophyllum ellipticum var. genuinum Urb. accepted as Porophyllum ruderale (Jacq.) Cass. (original description)
Porophyllum ellipticum var. ruderale (Jacq.) Urb. accepted as Porophyllum ruderale (Jacq.) Cass. (original description)
Porophyllum macrocephalum var. leiocarpum Urb. accepted as Porophyllum leiocarpum (Urb.) Rydb. (original description)
Proustia crassinervis Urb. accepted as Berylsimpsonia crassinervis (Urb.) B.L.Turner (original description)
Proustia krugiana Urb. accepted as Proustia vanillosma C.Wright (original description)
Senecio fadyenii var. dolichanthus Krug & Urb. (original description)
Senecio haitiensis Krug & Urb. (original description)
Senecio picardae Krug & Urb. (original description)
Vernonia longifolia var. genuina Urb. (original description)
Vernonia longifolia var. sintenisii Urb. accepted as Lepidaploa glabra (Willd.) H.Rob. (original description)
Vernonia longifolia var. vahliana (Less.) Urb. accepted as Lepidaploa glabra (Willd.) H.Rob. (original description)