Sauromatum nangkarense A. Nangkar & H. Tag, a new species of Sauromatum Schott, (Araceae) from Kimin, Papum Pare District of Arunachal Pradesh, India, is described and illustrated with photographs of living specimens. The new species resembles Sauromatum brevipes and S. hirusutum with their staminodes short and curved downward and the spathe-tube is convulated. The new species differs from these in having subcylindric tubers, pinnate leaves, with male zone blonde, cream, sterile flowers clavate, pink, stipitate and curved downward covering female zone partially. Detailed description and a range of photographs have been provided.
During the search of aroids in Arunachal Pradesh, one aroid plant was recorded from a place about 10 km away from Boleng town of Siang district, Arunachal, at an altitude of 430 m AMSL, with geographical location: 28 0 18' 24.83 N Longitude and E; 094 0 56' 86.73 E Latitude on 27 th May 2014. On critical analysis of morphological characters and survey of literature revealed that the collected plant is a hitherto unnamed species of the genus Colocasia Schott. It is named here as Colocasia adiana sp. nov. This new species has resemblance with Colocasia boycena R. Gogoi & S. Borah and Colocasia fontanesii Schott. The detailed description and illustration were made from living plant materials. The color photograph, reference to Type specimen and some drawings are provided. An artificial Key has been prepared to identify the species of Colocasia found in NE India.
A new species of Arisaema Mart. (Araceae : Arisaemateae), Arisaema arunachalensis A.Nangkar, A.P. Das & H.Tag, has been recognized from Arunachal Pradesh in Northeast India that represent the easternmost part of the Eastern Himalaya. The new species is named after this easternmost Indian state. It is close to A. echinatum (Wall.) Schott but can be distinguished easily from shape and cplour of its spathe and structure of the tip of spadix. Detailed description and a range of photographs has been provided.
We published the name of a new species of Arisaema Schott in Pleione [11(2): 480-484. 2017] as A. arunachalensis A.Nangkar, A.P. Das & H.Tag. The construction is with an orthographic error as the generic name is in neuter gender. So, the corrected form of the name will be: Arisaema arunachalense A.Nangkar, A.P. Das & H.Tag [ut A. arunachalensis]. The Type specimens, description, etymology, ecology and distribution relating to this species and its name will remain same as it was already published (Nangkar et al. 2017). However, the Types are presented again for the convenience of readers:
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