It occurs as distinct subspecies in two widely separated locations: B. conferta subsp. conferta in southern Queensland on the Lamington Plateau and further north in the Glass House Mountains; and B. conferta subsp. penicillata in New South Wales from Bowral to north of Lithgow.
Itu ada sebagai subspesies berbeda di dua tempat yang terpisah jauh: B. conferta subsp. conferta di Queensland selatan di Lamington Plateau dan lebih jauh di utara di Pegunungan Glass House; dan B. conferta subsp. penicillata di New South Wales dari Bowral sampai di utara dari Lithgow.