Dalbergia species

Soosairaj, S., Raja, P., Britto, S. John & Balaguru, B., 2018, A new species of Dalbergia (Fabaceae: Dalbergieae) from Tamil Nadu, India, Phytotaxa 360 (3), pp. 282-286 : 285

Key to Indian scandent Dalbergia species

1. Stamens monadelphous.....................................................................................................................................................................2

- Stamens isodiadelphous....................................................................................................................................................................13

2. Leaflets usually 1–7............................................................................................................................................................................3

- Leaflets usually> 7............................................................................................................................................................................5

3. Pods 30–40 mm long..................................................................................................................................................... D. rubiginosa

- Pods 75–100 cm long.........................................................................................................................................................................4

4. Flowers in crowded axillary panicles with corymbose branchlets; pods 1–3 seeded ............................................................ D. ovata

- Flowers in lax axillary panicles with subcorymbose branchlets; pods always 1 seeded............................................ D. pseudo-sisso

5. Leaflets 7–13......................................................................................................................................................................................6

- Leaflets 9–41......................................................................................................................................................................................8

6. Vexillum obovate; seeds brown....................................................................................................................................... D. matthewii

- Vexillum ovate–orbicular; seeds black...............................................................................................................................................7

7. Leaflets prominently nerved; ovary glabrous ................................................................................................................... D. congesta

- Leaflets obscurely nerved; ovary villous..................................................................................................................... D. gardneriana

8. Trunk armed ........................................................................................................................................................................ D. horrida

- Trunk unarmed...................................................................................................................................................................................9

9. Pods veined opposite the seeds.........................................................................................................................................................10

- Pods not veined opposite the seeds..................................................................................................................................................11

10. Leaflets glabrous; flowers in ample terminal panicles with crowded corymbose branches ....................................... D. confertiflora

- Leaflets with few obscure appressed hairs; flowers in copious axillary panicles with corymbose branches ............ D. melanoxylon

11. Branches pubescent; pods brownish.................................................................................................................................................12

- Branched glabrous; pods greenish ................................................................................................................................ D. junghuhnii

12. Panicle distinctly peduncled, as long as the leaves ............................................................................................................ D. velutina

- Panicle sessile, shorter than leaves...................................................................................................................................... D. pinnata

13. Pods straight.....................................................................................................................................................................................14

- Pods obliquely orbicular........................................................................................................................................... D. candenatensis

14. Calyx teeth as long as the tube........................................................................................................................................................15

- Calyx teeth shorter than the tube.....................................................................................................................................................16

15. Pods thickened, not flexible ........................................................................................................................................... D. stipulacea

- Pods thin, flexible............................................................................................................................................................. D. assamica

16. Leaflets 9–11; bracteate.................................................................................................................................................... D. thomsoni

- Leaflets 11–19; ebracteate................................................................................................................................................................17

17. Pedicels as long as the calyx............................................................................................................................................................18

- Pedicels shorter than the calyx .......................................................................................................................................... D. volubilis

18. Leaflets acute, glabrescent; pod softly pubescent ................................................................................................................... D. cana

- Leaflets obtuse, glabrous; pod glabrous ........................................................................................................................... D. purpurea