Caladenia petrensis and C. saxicola (Orchidaceae), two new ironstone endemics from south-west Western Australia
BROWN, A.P. AND BROCKMAN, G.

Caladenia petrensis A.P.Br. & G.Brockman and C. saxicola A.P.Br. & G.Brockman are described and illustrated, their relationship with the closely related C. incensa Hopper & A.P.Br. is discussed and a key provided. Both species are placed in Caladenia R.Br. subg. Phlebochilus (Benth.) Hopper & A.P.Br. based on the flowers having long filamentous tepals and the labellum with two rows of broadly anvil-shaped, glossy calli.