Monimiaceae

Lírio, Elton John De, Peixoto, Ariane Luna & Siqueira, Marinez Ferreira De, 2015, Taxonomy, conservation, geographic and potential distribution of Macrotorus Perkins (Mollinedioideae, Monimiaceae), and a key to the Neotropical genera of Monimiaceae, Phytotaxa 234 (3), pp. 201-214 : 202-203

Key to the Neotropical genera of Monimiaceae

1 Trichomes fasciculate, perianth 9–10-lobed, stamens with basal appendages, pistillate flowers with staminodes .............. Peumus

- Trichomes simple, perianth 4-lobed or obsolete with 6–10 lobes, stamens without basal appendages, pistillate flowers without staminodes ........................................................................................................................................................................................ 2

2 Leaves opposite and whorled on the same branch; staminate flowers with discoid receptacle, perianth lobes 6–10, reduced or almost absent; pistillate flowers with calyptra, carpels 1–3 ........................................................................................... Hennecartia

- Leaves opposite; staminate flowers with flat, campanulate or urceolate receptacle, perianth lobes 4; pistillate flowers with calyptra or persistent lobes, carpels 5 or more ............................................................................................................................................... 3

3 Decumbent or scrambling shrubs; staminate flowers with urceolate receptacle, lobes of pistillate flowers persistent, drupelets exposed at maturity, receptacle with irregular dehiscence, pendulous, peduncle plus pedicel 7–8.5 cm long ........... Grazielanthus

- Erect shrub or tree; staminate flowers with flat, campanulate or urceolate receptacle, pistillate flowers with calyptra, drupelets early exposed, receptacle not pendulous, peduncle plus pedicel up to 3.6 cm long ....................................................................... 4

4 Staminate flowers with long-urceolate receptacle, perianth lobes short, with 1/9 to 1/14 of the length of flower; anthers at base of receptacle peltate, circular dehiscent ............................................................................................................................... Macrotorus

- Staminate flowers with relatively short receptacle, perianth lobes equal or longer than the receptacle; anthers not peltate, dehiscent by longitudinal slits .......................................................................................................................................................................... 5

5 Staminate flowers with perianth lobes much longer than receptacle, lobes 3/5 to 4/5 of the flower length ................. Macropeplus

- Staminate flowers with perianth lobes equal or nearly equal in length to receptacle ...................................................... Mollinedia