Canscora

Nampy, Santhosh, 2014, A taxonomic revision of the genus Canscora in South India, and the erection of the new genus Canscorinella (Canscorinae, Gentianaceae) with two new combinations, Phytotaxa 164 (4), pp. 201-225 : 202

Key to the South Indian species of Canscora

1. Filaments of the upper stamen broadened below the anther .................................................................................................. 2

- Filaments of the upper stamen not broadened below the anther............................................................................................ 4

2. Bracts perfoliate ..................................................................................................................................................................... 3

- Bracts linear-lanceolate ........................................................................................................................................... 1. C. alata

3. Stems prominently winged (wings 2−5 mm broad); calyx winged ................................................................ 5. C. perfoliata

- Stems narrowly winged (wings 1−1.5 mm broad); calyx striate................................................................... 6. C. roxburghii

4. Flowers pedicellate................................................................................................................................................................. 5

- Flowers sessile .............................................................................................................................................. 3. C. heteroclita

5. Cymes dense; pedicels not thickened below the calyx; calyx without wings or striations................................. 2. C. diffusa

- Cymes lax; pedicels thickened below the calyx; calyx striate ....................................................................... 4. C. pauciflora 1. Canscora alata (Roth) Wallich (1831: 4363) excl. specimens. Wight (1850: 175); Clarke (1875: 431); Thiv (2003: 6). Exacum alatum Roth in Roemer & Schultes (1818: 159).