Jasminanthes

Rodda, Michele, 2019, A revision of Jasminanthes (Apocynaceae) with four new species from Borneo, Phytotaxa 405 (3), pp. 127-146 : 129

Key to species of Jasminanthes , modified from Tran et al. (2018) and Ding et al. (2019).

1. Peduncle> 7 cm long.........................................................................................................................................................................2

1. Peduncle <6 cm long.........................................................................................................................................................................3

2. Peduncle 14–18 cm long, calyx lobes 2.5–2.6 mm long............................................................................................ J. xuanlienensis

2. Peduncle 7–11 cm long, calyx lobes 5.0–6.0 mm long ......................................................................................................... J. laotica

3. Stems and leaves underneath very pubescent.....................................................................................................................................4

3. Stems and leaves glabrescent or sparsely pubescent..........................................................................................................................5

4. Calyx lobes 18–30 × 4–8 mm, corolla tube 40–50 mm long ................................................................................................. J. pilosa

4. Calyx lobes 10–15 × 4–5 mm, corolla tube 18–20 mm long ..................................................................................... J. kinabaluensis

5. Corolla lobes linear, tube <1 mm wide at throat .......................................................................................................... J. suaveolens

5. Corolla lobe lanceolate, elliptic or ovate, tube> 1.5 mm wide at throat............................................................................................6

6. Peduncle 0–0.2 cm long ............................................................................................................................................... J. tuyetanhiae

6. Peduncle> 0.5 cm long......................................................................................................................................................................7

7. Calyx lobe c. 3 × 1 mm, corolla throat pubescent............................................................................................................... J. saxatilis

7. Calyx lobe> 5 × 1.5 mm, corolla throat glabrous or sparsely pubescent..........................................................................................8

8. Corolla lobe 6–8 mm long...................................................................................................................................................... J. chunii

8. Corolla lobes> 10 mm long...............................................................................................................................................................9

9. Corolla lobe base symmetric............................................................................................................................................................10

9. Corolla lobe base asymmetric..........................................................................................................................................................11

10. Corolla tube> 9–17 mm long...........................................................................................................................................................12

10. Corolla tube <6 mm long........................................................................................................................................... J. sarawakensis

11. Calyx lobe 7–9 × 2.5–4 mm ............................................................................................................................................ J. mucronata

11. Calyx lobe (10–) 15–25 × 4–8........................................................................................................................................... J. maingayi

12. Lamina base round to acute............................................................................................................................................. J. borneensis

12. Lamina base cordate................................................................................................................................................................ J. hosei