Conopholis americana
Agalinis purpurea
Rhinanthus minor
Orobanche minor
Lathraea clandestina
Pedicularis canadensis
Melampyrum pratense
Lathraea squamaria
Dasistoma macrophylla
Aureolaria pectinata
Epifagus virginiana
Parentucellia viscosa
Rhinanthus alectorolophus
Odontites vernus
Orobanche hederae
Pedicularis palustris
Conopholis alpina
Cistanche phelypaea
Bartsia trixago
Bartsia alpina
Melampyrum lineare
Pedicularis verticillata
Castilleja coccinea
Cordylanthus rigidus
Euphrasia officinalis
Castilleja applegatei
Castilleja linariifolia
Melampyrum arvense
Pholisma sonorae
Striga asiatica
Orobanche latisquama
Triphysaria pusilla
Bellardia trixago
Euphrasia hirtella
Parentucellia latifolia
Castilleja tenuiflora
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