Pavonia subg. Pavonia sect. Lopimia (Martius) Endlicher, 1840

Identification key for the species of Pavonia subg. Pavonia sect. Lopimia from the state of Mato Grosso, Brazil

1. Branches pubescent with stellate and glandular trichomes ................................................................................................................2

- Branches hirsute without stellate trichomes.......................................................................................................................................5

2. Leaf blade elliptic to narrowly elliptic, base truncate to cuneate .......................................................................................................3

- Leaf blade ovate, base cordate............................................................................................................................................................4

3. Calyx 10–13 mm long; petals pink to purple; mericarps glabrous..................................................................... Pavonia angustifolia

- Calyx 15–25 mm long; petals white; mericarps pubescent ................................................................................... Pavonia windischii

4. Leaf blade 9–21 cm long, chartaceous; epicalyx bracteoles 15–18(–24); petals pubescent on the abaxial surface; mericarps sticky, glabrous ............................................................................................................................................................ Pavonia malacophylla

- Leaf blade 2.5–4 cm long, coriaceous; epicalyx bracteoles 10–12; petals glabrous; mericarps not sticky, pubescent........................ ...................................................................................................................................................................... Pavonia rosa-campestris

5. Epicalyx bracteoles 6–8; calyx 4–6 mm long; petals 8–10 mm long, pink, basal spot darker pink; staminal tube 12 mm long......... ............................................................................................................................................................................ Pavonia neuropetala

- Epicalyx bracteoles 16–21; calyx 12–15 mm long; petals 40 mm long, yellow, basal spot red; staminal tube 20 mm long .............. ...................................................................................................................................................................... Pavonia aschersonioides