Alternanthera, Forsskal, 1775

Arya, Sindhu & Kumar, Venugopalan Nair Saradamma Anil, 2021, Alternanthera ebracteolata (Amaranthaceae), a new species from Kerala (SW- India), Phytotaxa 480 (3), pp. 277-283 : 280-281

Taxonomic notes:— In India, the genus Alternanthera is represented by 7 species. A diagnostic key is below presented:

3. Bracteole present ................................................................................................................................................................................4

4. Stem hollow succulent and leaf narrow to linear ....................................................................................................... A. philoxeroides

4. Stem solid, non succulent and leaves broad ovate to obovate......................................................................................... A. brasiliana

5. Appendages on androecial tube 5 in number .....................................................................................................................................6

5. Appendages on androecial tube 3 in number ....................................................................................................................... A. sessilis

6. Appendages on androecial tube margin fimbriate..............................................................................................................................7

6. Appendages on androecial tube entire to dentate .................................................................................................... A. paronychioides

7. Sepal villous with partially candilabriform trichomes ......................................................................................................... A. tenella

7. Sepal villous with uniseriate simple trichomes ............................................................................................................ A. bettzickiana