Floristic Study of Dzukou Valley and Surrounding Hills, Manipur and Nagaland, India

Dzukou valley and surrounding hills situated between Manipur and Nagaland States are spread over an area of 27 sq. km. with a unique floristic wealth and biodiversity. The paper is an outcome of several exploration trips to the area. 335 species belonging to 223 genera and 114 families of sub-tropical evergreen, temperate and sub-alpine forest are enumerated. Of the taxa, two new generic record viz. Oriorchis Lindl. and Coeloglossum Hartm. For North East India and 24 species new record viz. Geranium tuberaria Jacquem, Malus sikkimensis (Wenzig) Balakr., Prunus rufa Hook.f., Astilbe rubra Hook.f. & Thomson.ex Hook.f., Rhododendron lepidotum Wall, ex G.Don, Rhododendron vaccinioides Hook.f., Primula deuteronana Craib, Primula stuartii Wall., Primula geraniifolia Hook.f., Euphorbia sikkimensis Boiss., Allium vietorialis L., Ligularia fischeri (Ledeb.) Turcz., Corybas himalaieus (King & Pantl.) Schltr., Oriorchis foliosa Lind., Parnasia wightiana Wall., Jasminum humile L. etc. for Nagaland and Manipur States. About 6% of the plants recorded were endemic to the area or endemic to eastern Himalaya.