California Broomrape: Aphyllon californicum ssp. californicum (Synonyms: Orobanche californica ssp. californica, Orobanche californica var. californica, Orobanche grayana var. nelsonii)
Gray's Broomrape, Gray's California Broomrape: Aphyllon californicum ssp. grayanum (Synonyms: Orobanche californica ssp. grayana , Orobanche californica var. grayana, Orobanche grayana, Orobanche grayana var. grayana)
Flat-topped Broomrape: Aphyllon corymbosum ssp. corymbosum (Synonyms: Orobanche californica var. corymbosa, Orobanche corymbosa ssp. corymbosa)
Clustered Broomrape: Aphyllon fasciculatum (Synonyms: Anoplanthus fasciculatus, Orobanche fasciculata, Orobanche fasciculata var. fasciculata, Orobanche fasciculata var. lutea, Orobanche fasciculata var. lutea, Orobanche fasciculata var. subulata, Orobanche fasciculata var. typica, Thalesia fasciculata, Thalesia lutea) - Like Aphyllon franciscanum but parasitic exclusively upon Artemisia sp.
Clustered Broomrape: Aphyhllon franciscanum (Synonym: Orobanche fasciculata var. franciscana) - Like Aphyllon fasciculatm but parasitic upon Eriogonum sp., Eriophyllum lanatum, Phacelia sp. and others but not on Artemisia sp.
Conifer Broomrape, Ocean Spray Broomrape, Pine Broomrape, Pinewoods Broomrape: Aphyllon pinorum (Synonyms: Myzorrhiza pinorum, Orobanche pinorum, Phelipaea pinorum)
Naked Broomrape, Purple Broomrape: Aphyllon purpureum (Synonyms: Orobanche poryphyrantha, Orobanche sedi, Orobanche uniflora ssp. occidentalis, Orobanche uniflora var. minuta, Orobanche uniflora var. occidentalis, Orobanche uniflora var. purpurea, Orobanche uniflora var. sedi) - This is the currently accepted taxonnomic designation for this species now.
Clover Broomrape, Hellroot: Orobanche minor (Synonym: Orobanche columbiana)