Cousinia orthoclada Hausskn. & Bornm. (original description)
Erigeron aprutii Vierh. (original description)
Erigeron aragonensis Vierh. accepted as Erigeron uniflorus subsp. aragonensis (Vierh.) O.Bolòs & Vigo (original description)
Erigeron argaeus Vierh. accepted as Erigeron cilicicus Boiss. ex Vierh. (original description)
Erigeron bithynicus Vierh. accepted as Erigeron pulchellus Michx. (original description)
Erigeron cilicicus Boiss. ex Vierh. (original description)
Erigeron daenensis Vierh. (original description)
Erigeron elbursensis Vierh. (original description)
Erigeron exaltatus Vierh. (original description)
Erigeron graecus Vierh. (original description)
Erigeron himalajensis Vierh. (original description)
Erigeron hispidus Vierh. (original description)
Erigeron hyrcanicus Bornm. & Vierh. (original description)
Erigeron libanoticus Vierh. (original description)
Erigeron major (Boiss.) Vierh. (original description)
Erigeron montenegrinus Vierh. (original description)
Erigeron occidentalis Vierh. (original description)
Erigeron tatrae Vierh. (original description)
Erigeron turkestanicus Vierh. accepted as Erigeron lachnocephalus Botsch. (original description)
Erigeron unalaschkensis (DC.) Vierh. accepted as Erigeron humilis Graham (original description)
Erigeron unifloroides Vierh. accepted as Erigeron pulchellus Michx. (original description)
Erigeron valesiacus Reut. ex Vierh. (original description)
Erigeron vandasii Vierh. (original description)
Erigeron zederbaueri Vierh. (original description)
Trimorpha abyssinica Vierh. (original description)
Trimorpha alba (Gaudin) Vierh. accepted as Erigeron schleicheri Gremli (original description)
Trimorpha alpina Vierh. (original description)
Trimorpha asadbarensis Vierh. (original description)
Trimorpha attica (Vill.) Vierh. (original description)
Trimorpha calcarea Vierh. (original description)
Trimorpha cappadocica Vierh. (original description)
Trimorpha compacta Vierh. (original description)
Trimorpha epirotica Vierh. accepted as Erigeron epiroticus (Vierh.) Halácsy (original description)
Trimorpha gracilis Vierh. (original description)
Trimorpha hungarica Vierh. accepted as Erigeron hungaricus (Vierh.) Pawł. (original description)
Trimorpha intermedia (Rchb.) Vierh. accepted as Erigeron alpinus subsp. intermedius (Rchb.) Pawł. (original description)
Trimorpha isaurica Vierh. (original description)
Trimorpha kumaunensis Vierh. accepted as Erigeron kumaunensis (Vierh.) Wendelbo (original description)
Trimorpha kunawurensis Vierh. (original description)
Trimorpha neglecta Vierh. (original description)
Trimorpha nevadensis Vierh. accepted as Erigeron granatensis W.Lippert (original description)
Trimorpha olympica Vierh. (original description)
Trimorpha pycnotricha Vierh. accepted as Erigeron acris subsp. pycnotrichus (Vierh.) Grierson (original description)
Trimorpha pyrenaica Vierh. (original description)
Trimorpha rhodopaea Vierh. accepted as Erigeron alpinus subsp. rhodopaeus (Vierh.) Kožuharov & N.Andreev (original description)
Trimorpha strigosa Vierh. (original description)
Trimorpha transsilvanica Vierh. (original description)
Trimorpha vandasii Vierh. (original description)