Goniothalamus keralensis E.S.S.Kumar, Shaju, Roy et Raj Kumar, a new species of Goniothalamus (Blume) Hook.f. & Thomson (Annonaceae) is described and illustrated. This species located in the forests of Idukki district in Kerala, India is similar to G. wightii Hook.f. & Thomson, but differs in having the longer leaves with acuminate or acuminate-caudate apex, the shorter pedicels of flowers, smaller sepals which are deciduous in fruits, stamens with glabrous and convex connective, fewer carpels with very short or indistinct style and funnel shaped stigma, and seeds are consistently two in each carpels.
Key words: Annonaceae, Goniothalamus keralensis, India, new species, Western Ghats.
E. S. Santhosh Kumar, T. Shaju, P. E. Roy and G. Raj Kumar. 2013. A New Species of Goniothalamus (Blume) Hook. f. & Thomson (Annonaceae) from Kerala, India. Taiwania. 58(3): 171‒175 DOI: dx.doi.org/10.6165/tai.2013.58.171