Boronia section Boronia

Duretto, Marco F., Heslewood, Margaret M. & Bayly, Michael J., 2023, A molecular phylogeny of Boronia (Rutaceae): placement of enigmatic taxa and a revised infrageneric classification, Australian Systematic Botany 36 (2), pp. 81-106 : 103

Key to the series of Boronia section Boronia

1. Staminal filaments woolly; leaves simple...............series Variabiles Staminal filaments pilose, puberulous or glabrous; leaves simple or imparipinnate...............................................................................2

2. Petioles persistent or tardily caducous and after lamina has fallen; leaves imparipinnate; anthers approximately equal or antisepalous anthers much smaller than antipetalous anthers............................ .............................................................................series Persistens Petioles absent or deciduous with leaves; leaves simple or imparipinnate; anthers approximately equal or antisepalous anthers much larger than antipetalous anthers.........................................3

3. Leaves simple...................................................................................4 Leaves imparipinnate.......................................................................6

4. Inflorescence terminal, often also in upper axils........series Boronia Inflorescence axillary.......................................................................5

5. Leaf margin smooth (Qld, NSW)................................series Boronia Leaf margin crenulate ( SW Austr.)......................series Heterandrae

6. Inflorescence axillary, or axillary and terminal, 1–40 + -flowered; peduncle up to 30 mm long; antisepalous and antipetalous anthers approximately equal ( SA, Qld, NSW, Vic., Tas.)......series Boronia Flowers axillary, solitary or in pairs, or rarely in threes; peduncle absent or minute; antisepalous approximately equal to or significantly larger than antipetalous anthers ( SW Austr.)...................... .........................................................................series Heterandrae