Medusagynaceae - empty in ITIS - Delta http://biodiversity.uno.edu/delta/angio/www/medusagy.htm shows this as having a single genus and species from Seychelles. Included by cladists in Malpighiales.
Quiinaceae - empty in ITIS - Delta http://biodiversity.uno.edu/delta/angio/www/quiinace.htm shows this with 4 genera and 50 species. Included on Malpighiales by cladists.
Rhopalocarpaceae - empty in ITIS - Delta http://biodiversity.uno.edu/delta/angio/www/sphaeros.htm where it is treated as synonymous with Sphaerosepalaceae. Included in Malvales by cladists.
Sarcolaenaceae - empty in ITIS - Delta http://biodiversity.uno.edu/delta/angio/www/sarcolae.htm show this with 10 genera and 40 species. Cladists include this with the Malvales.
Stachyuraceae - empty in ITIS - Delta http://biodiversity.uno.edu/delta/angio/www/stachyur.htm shows a single genus with 10 species. Included in Rosids by cladists.