Turraea, Linnaeus, 1771

Baider, Claudia & Vincent Florens, F. B., 2016, A new and critically endangered species of Turraea (Meliaceae) endemic to the island of Mauritius, Phytotaxa 247 (3), pp. 219-228 : 225-226

Key to the Turraea of the Mascarenes, adapted and expanded from Scott & Bosser (1997)

2. Flowers 5-merous; inflorescences a 3–5-flowered cyme; most leaves oblong-elliptic or elliptic, more than 3 cm long, entire; juvenile leaves entire........................................................................................................................................................... T. oppositifolia

- Flowers 4-merous; inflorescences a 2-flowered cyme; leaves obovate, less than 2.5 cm long; juvenile leaves pinnatifid...............3

3. Inflorescences, calyx and petals puberulent; peduncle and pedicels thick, less than 2 mm long (Rodrigues) .................................... ............................................................................................................................. T. laciniata ( Balfour 1877: 12) Harms (1896: 284)

- Inflorescences, calyx and petals glabrous; peduncle and pedicels slender, 5–12 mm long ( Mauritius) .............................................. ........................................................................................................................ T. trichopoda ( Baillon 1874: 255) Harms (1896: 284)

4. Flowers generally 5-merous...............................................................................................................................................................5

- Flowers generally 4-merous...............................................................................................................................................................8

5. Staminal tube completely fused; petals yellowish, pubescent outside; racemes 5–14-flowered ........................................ T. rutilans

- Staminal tube partially free at tip; petals white, pink or purple, glabrous to slightly pubescent outside; cymes 2–3-flowered, or flowers solitary or fasciculated...........................................................................................................................................................6

6. Staminal tube (8–) 10 mm long, free part of filaments 3–4 mm long..................................................................................... T. rigida

Staminal or staminodial tube 1.6–5 mm long, free part of filaments 0.5–3 mm long........................................................................7

7. Leaf margin often lobed, staminal or staminodial tube 1.6 mm (female)– 4.5 mm (male) long, free part of filaments 0.5–1(–2) mm long, capsule 5–6 mm high ( Mauritius) ....................................................................................................................... T. dargentiana

- Leaf margin entire, staminal tube 4–5 mm long, free part of filaments 2–3 mm long, capsule 15–25 mm high ( Réunion) ............... .................................................................................................................................................................. T. cadetii Scott (1979: 650)

8. Leaves entire, calyx 3–3.5 mm long, petal 8–9 mm long, staminal tube 4–4.6 mm long, style 5 mm long.................... T. monticola

- Leaves entire or 3–9 lobed, calyx 1–2 mm long, petal 4–8 mm long, staminal tube 2–4 mm long, style 3–3.5 mm long................9

9. Juvenile leaves entire, adult leaves obovate or elliptic; peduncles 2–5 mm long; calyx densely puberulent; staminal tube 3–4 mm long; petals 5–8 mm long ........................................................................ T. ovata ( Cavanilles 1789: 368, t. 212) Harms (1896: 284)

- Juvenile leaves pinnatilobed to pinnatifid, most adult leaves oval or elliptic; peduncles 1–2 mm long; calyx barely puberulent; staminal tube 2–2.5 mm long; petals 4–5 mm long................. T. thouarsiana ( Baillon 1863: 121) Cavaco & Keraudren (1955: 23)