Image 3 seems to be a member of family Dioscoreaceae. It may be Dioscorea sp.
Image 5 was posted after the first answer. So image 4 and 5 depicts Alocasia sp. of Araceae family
Image 1 depicts a plant community. Therefore several plant appears in the image. Mikania micrantha of family Asteraceae can be seen at the left side in the image
Image 1: Closely Climbing Fern. or Cucurbitaceae member.
Image 2: Araceae
Image 3: Dioscorea sp
Image 4 & 5...Alocasia sp
Upload any evidence of images.... Flower or Fruiting Images....
Image 1 is difficult
Image 2 is Tacca chantrieri of Taccaceae
Image 3 is probabbly Dioscorea oppositifolia ; In D. oppositifolia both opposite and alternate leavaes are observed.
Image 4 and 5 are of Colocasia species, may be C. esculenta. There is also one Curcuma plant seen in the image 5
Arvind sir and Chennakesavulu
Thank you for your opinion. Image-1 characters are not matched with Cucurbitaceae and Manihot. Characters found in this plant are – stem and leaves glabrous, underground large tuber present, tendril and stipule absent.
Waiting for your further views
Regards … Dipti Das
Narayanan Nair Mohanan sir,
In image 3, plant leaves are absolutely alternate. So it may not be D. oppositifolia.
Is it D. cinnamomifolia ?
Image 2 Tacca is correct. In local flora only one species i.e. integrifolia is distributed in this State. Image 4 &5 Colocasia species is not confirmed.
Regards … Dipti Das
Please check this useful link for identification of Dioscorea species
https://www.academia.edu/4549274/An_Investigation_on_the_Taxonomy_and_Ecology_of_the_genus_Dioscorea_in_Arunachal_Pradesh_India
2. Tacca integrifolia Ker Gawl.
3. Dioscorea oppositifolia L.
4 & 5. Alocasia fallax Schott
For image 1, flower is needed, from leaves not clear
Dioscorea cinnamomifolia Hook. is found in Brazil, not in India.
Dioscorea oppositifolia is a native yam species of Indian subcontinent.
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