Northeastern Himalayan subalpine conifer forests cover 46,300 square kilometres (17,900 sq mi) in the southeast Tibetan Plateau, occurring between 2,500 and 4,200 metres (8,200 and 13,800 ft).

cuspidata, Alnus nepalensis, Picea brachytyla, Juglans regia, Larix sibirica, Larix × czekanowskii, Pinus koraiensis, Pinus sibirica, Pinus sylvestris, Picea obovata, Abies sibirica, Quercus acutissima, Quercus mongolica, Ginkgo biloba, Prunus serrulata, Prunus padus, Tilia amurensis, Salix babylonica, Acer palmatum, Populus tremula, Ulmus davidiana, Ulmus pumila, Pinus pumila, Haloxylon ammodendron, Elaeagnus angustifolia, Tamarix ramosissima, Prunus sibirica, Cathaya argyrophylla, Taiwania cryptomerioides, Cyathea spinulosa, Sassafras tzumu, Davidia involucrata, Metasequoia glyptostroboides, Glyptostrobus pensilis, Castanea mollissima, Quercus myrsinifolia, Quercus acuta, Machilus thunbergii, Tetracentron, Cercidiphyllum japonicum, Emmenopterys henryi, Eucommia ulmoides, and Taxus baccata.

Cupressus torulosa (Himalayan cypress) is one of the tallest known species of trees(can grow up to 102.3m),[3] and it can be found in this ecoregion.

The number of rhododendron species seems to increase above 2,000 metres (6,600 ft), and the Yarlung Tsangpo River gorge alone may harbor over 60 of them.

The highest forest in the world is found in this ecoregion, with Tibetan juniper reaching heights of 4,900 m (16,100 ft) in Baxoi County, Tibet Autonomous Region.