"Grubbia gracilis", "Grubbia hirsuta", and "Grubbia pinifolia" had all been recognized, at least by some authors, at species rank, but Carlquist treated them as subspecies or varieties of "Grubbia rosmarinifolia".
"Grubbia gracilis", "Grubbia hirsuta", и "Grubbia pinifolia", некоторыми авторами выделяемые в ранг вида, он записал как подвиды или вариации вида "Grubbia rosmarinifolia".