Mussaenda species
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publication ID |
https://doi.org/10.11646/phytotaxa.328.2.7 |
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persistent identifier |
https://treatment.plazi.org/id/038287D2-C203-1163-FF6C-FDD942B0B6E7 |
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treatment provided by |
Felipe |
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scientific name |
Mussaenda species |
| status |
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Key to Mussaenda species in Vietnam, Laos and Cambodia. Characters used in the key are based on Baker et al. (1921), Pitard (1922 –24), Merrill (1938), Li (1943), Jayaweera (1963), and Lin et al. (2011).
1. Young shoots glabrous...................................................................................................................................................................... 2.
- Young shoots hairy .......................................................................................................................................................................… 4.
2. Flowers sessile or pedicellate; pedicel up to 1 mm long if present ............................................................... M. dranensis Wernham View in CoL
- Flowers pedicellate; pedicel 1–5 mm long....................................................................................................................................... 3.
3. Corolla lobes ovate 4–5 mm long; corolla tube 22–24 mm long ............................................................ M. erosa Champ. ex Benth. View in CoL
- Corolla lobes oblong 6 mm long; corolla tube 25–30 mm long................................................................................. M. glabra Vahl View in CoL
4. Upper surface of leaf blades completely or almost glabrous .......................................................................................................… 5.
- Upper surface of leaf blades hairy.................................................................................................................................................... 8.
5. Lower surface of leaf blades glabrous......................................................................................................................... M. thorelii Pit. View in CoL
- Lower surface of leaf blades hairy ................................................................................................................................................... 6.
6. Petioles 1–5 mm long; calyx tubes 1.5–2 mm long; calyx lobes linear ..................................................... M. hoaensis Pierre ex Pit. View in CoL
- Petioles more than 5 mm long; calyx tubes 3–4 mm long; calyx lobes lanceolate or oblong.......................................................... 7.
7. Leaf blades oblong–elliptic, 5–16 × 2.5–8 cm; petiole 5–15 mm long........................................................................... M. bonii Pit. View in CoL
- Leaf blades broadly elliptic, 12–20 × 6–9 cm; petiole 15–25 mm long....................................................................... M. aptera Pit. View in CoL
8. Upper surface of leaf blades densely hairy....................................................................................................................................... 9.
- Upper surface of leaf blades sparsely hairy.................................................................................................................................... 13.
9. Apex of leaf blades cuspidate; inflorescences sessile; calyx tubes cylindrical ca. 10 mm long ................... M. hilaris Pierre ex Pit. View in CoL
- Apex of leaf blades acute or acuminate; inflorescences peduncled; calyx tubes less than 5 mm long......................................… 10.
10. Leaves sessile or sometimes petiolate; petioles up to 2 mm long; base of leaf blades cordate.......................... M. sanderiana Ridl. View in CoL
- Leaves petiolate; petioles more than 2 mm long; base of leaf blades cuneate, rounded or attenuate ............................................ 11.
11. Older branches glabrous; petioles 10–25 mm long; stipules 8–10 mm long ........................................ M. saigonensis Pierre ex Pit. View in CoL
- Older branches pilose and/or puberulent; petioles 2–10 mm long; stipules 5–8 mm long ............................................................ 12.
12. Calyx lobes non–recurved; corolla tubes 28–32 mm long; corolla lobes lanceolate, ca. 12 mm long ......... M. longipetala H. L. Li View in CoL
- Calyx lobes strongly recurved; corolla tubes 18–26 mm long; corolla lobes ovate, 5–7 mm long ..................................................... ................................................................................................................................................ M. recurvata Naiki, Tagane & Yahara View in CoL
13. Stipules ovate.................................................................................................................................................... M. macrophylla Wall. View in CoL
- Stipules linear, lanceolate or triangular ......................................................................................................................................… 14.
14. Inflorescences capitate to subcapitate; flowers mostly or all sessile, or pedicellate ...................................................................... 15.
- Inflorescences branched; flowers pedicellate................................................................................................................................. 18.
15. Petioles 1–2 cm long; corolla tubes 3–3.5 cm long......................................................................................... M. densiflora H. L. Li View in CoL
- Petioles less than 1 cm long; corolla tubes less than 3 cm long.................................................................................................… 16.
16. Calyx tubes 1–1.5 mm; calyx lobes ca. 10 mm long...........................................................................… M. subsessilis Pierre ex Pit. View in CoL
- Calyx tubes more than 1.5 mm; calyx lobes 2–6 mm long ........................................................................................................… 17.
17. Young shoots and lower surface of leaf blades sparsely pubescent; corolla lobes ovate; fruit ellipsoid 10–12 × 4–6 mm ................. ........................................................................................................................................................................... M. divaricata Hutch. View in CoL
- Young shoots and lower surface of leaf blades strigillose; corolla lobes oblong-lanceolate to lanceolate; fruit subglobose 8–10 × 6–7.5 mm ......................................................................................................................................................... M. pubescens Dryand. View in CoL
18. Petioles 1–2.5 cm long; corolla tubes ca. 15 mm long............................................................................. M. dinhensis Pierre ex Pit. View in CoL
- Petiolse less than 1 cm long; corolla tubes more than 15 mm long ............................................................................................... 19.
19. Corolla tubes 16–18 mm long ................................................................................................................................. M. chevalieri Pit. View in CoL
- Corolla tubes more than 20 mm long .........................................................................................................................................… 20.
20. Stipules ca. 8 mm long; calyx lobes ca. 4 mm long ...........................................................................................… M. squiresii Merr. View in CoL
- Stipules less than 7 mm long; calyx lobes less than 3 mm long.................................................................................................… 21.
21. Secondary veins of leaf blade 8–10 pairs; fruits oblong-ellipsoid, 18 mm long....................................................... M. hossei Craib View in CoL
- Secondary veins of leaf blade 6–8 pairs; fruits subglobose or ellipsoid, 6–10 cm long ............................................................… 22.
22. Leaf blades 4–9 × 1.5–4.5 cm, hispid-tomentose on lower surface; petioles 3–8 cm long.................. M. cambodiana Pierre ex Pit. View in CoL
- Leaf blades 8.5–15 × 3–5 cm, sparsely strigillose on lower surface; petioles 8–10 cm long ..................................... M. frondosa View in CoL L.
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