†unranked clade Mastixioideae
Angiospermae - Cornales - Cornaceae
Parent taxon: Cornaceae according to M. E. J. Chandler 1964
See also Chandler 1961, Chandler 1962 and Chandler 1963
Sister taxa: Alangiophyllum, Cornaceophyllum, Cornoideae, Cornophyllum, Cornus, Dendrobenthamia, Diplomastixia, Dunstania, Eomastixia, Ganitrocera, Hartzia, Lanfrancia, Langtonia, Mastixicarpum, Mastixioidiocarpum, Muzquizoxylon, Nyssidium, Platymastixia, Plexiplica, Portnallia, Retinomastixia, Tectocarya, Xylomastixia
Subtaxa: none
Ecology: "photoautotroph"
Distribution: found only at Hordle Cliff Leaf Bed, Hampshire (Eocene of the United Kingdom)