Achillea crassifolia Dietr. ex Colla accepted as Achillea millefolium L. (original description)
Achillea croatica Hornem. ex Colla (original description)
Achillea dubia Fisch. ex Colla (original description)
Achillea flava Hort. ex Colla (original description)
Achillea paradoxa Bernh. ex Colla (original description)
Achillea purpurea Herb. ex Colla (original description)
Achillea sibirica Desf. ex Colla (original description)
Achillea virgata bellard. ex Colla (original description)
Aster erigeronoides Colla (original description)
Aster moschatus Hort. ex Colla accepted as Olearia argophylla (Labill.) F.Muell. ex Benth. (original description)
Baccharis martiana Colla (original description)
Baccharis oleifolia Mart. ex Colla (original description)
Bidens coronata Fisch. ex Colla accepted as Bidens pilosa L. (original description)
Bidens fervida Hort. ex Colla accepted as Bidens bipinnata L. (original description)
Bidens martii Colla (original description)
Bidens segetum Mart. ex Colla (original description)
Cacalia subhastata Moris ex Colla (original description)
Centaurea arnoldii Colla (original description)
Centaurea bannatica Colla (original description)
Centaurea bellardi Colla (original description)
Centaurea cicutifolia Colla (original description)
Centaurea purpurea Bellardi ex Colla (original description)
Centaurea serrulata Bellardi ex Colla (original description)
Centaurea stellata Bellardi ex Colla (original description)
Centaurea subulosa Hornem. ex Colla (original description)
Cineraria ambracea Fisch. ex Colla (original description)
Conyza cylindrica Colla (original description)
Conyza dichroa Mart. ex Colla (original description)
Conyza longifolia Colla (original description)
Conyza macrolasia Mart. ex Colla (original description)
Conyza martii Colla (original description)
Conyza monticola Mart. ex Colla (original description)
Coreopsis brasiliensis Colla accepted as Bidens reptans (L.) G.Don (original description)
Crepis croatica Hort. ex Colla (original description)
Crepis integrifolia Gaud. ex Colla (original description)
Crepis spinosissima Bellardi ex Colla (original description)
Crepis suaveolens Hort. ex Colla (original description)
Dumerilia frutescens Colla (original description)
Erigeron bahamensis Reusch ex Colla (original description)
Erigeron bonjeani Colla (original description)
Erigeron re Colla (original description)
Ethulia glomerata Mart. ex Colla (original description)
Eupatorium conspicuum Mart. ex Colla accepted as Bartlettina conspicua (Mart. ex Colla) P.L.R.Moraes & Guglielmone (original description)
Eupatorium grossedentatum Mart. ex Colla (original description)
Eupatorium lucidum Colla accepted as Ageratina lucida (Ortega) R.M.King & H.Rob. (original description)
Gnaphalium spinii Colla (original description)
Hieracium heterospermum Schult. ex Colla (original description)
Lactuca procera Schrad. ex Colla (original description)
Leontodon glaberrimus Bellardi ex Colla (original description)
Saussurea pulchella Fisch. ex Colla (original description)
Scorzonera radiata Fisch. ex Colla (original description)
Solidago maxima burd. ex Colla (original description)
Sonchus australis Hort. ex Colla accepted as Sonchus asper (L.) Hill (original description)
Sonchus longifolius Colla (original description)
Sonchus pensylvanicus Molin. ex Colla (original description)
Tagetes perretii nob. ex Colla accepted as Tagetes filifolia Lag. (original description)
Thrincia pilosiuscula Lag. ex Colla (original description)
Wedelia pedunculata Mart. ex Colla (original description)