Mongolia has 128 species of rare plants registered in Mongolian Red Data Book , and 2 species studied in Gun-Galuut NR in current situation.

Thymus gobicus Tschern.
Mint Family-Labiatae Juss.
VI-VII; VII; 2-3 cm; semi-shrub
Botanical characteristics: Semi-shrub with woody base. Heavily branched stems round and evenly hairy, leaves small, firm, circular or oval-shaped narrow, smooth edged, outer surface of leaves covered with long hairs along
ventral margins; leaf stalks hairy, red brown.
Habitat: Rocks, screes, debris and stony steppe slopes, desert steppes, waterside pebbles, fixed sands.
Distribution: Khubsugul, Khangai, Mongol-Daurian, Mobgolian Altai, Middle Khalkha, East Mongolia, Depression of Great Lakes, Valley of Lakes, Gobi Altai.
Economic uses: Medical and aromatic, good for washing hair. Used for treatment of respiratory diseases and as an extract for kidney disorders. An endemic plant.

Caryopteris mongolica Bge.
Vervain Family-Verbenaceae Jaume.
VIII; VII-VIII; 20-40 cm; shrub
Botanical characteristics: Multi-stemmed. Young shoots dark-red. Dwarf shrub, with opposite, linear-lanceolate, densely pubescent gray-green leaves with entire margin (rarely with spaced teeth) and bright blue flowers in
racemose inflorescences. Smooth, simple leaves 3.5-5 cm long, upper leaf surface green and lower surface whitish. Fruit fragile, four banners and striped capsules dissected into four sections.
Habitat: Steppe and desert stony and debris slopes of hills and mountains, on rocks, slopes and sandy-pebble bottom of sayrs, river shoals, thin sands.
Distribution: Khentei, Khangai, Mongol-Daurian, Mongolian Altai, Middle Khalkha, East Mongolia, Valley of Lakes, East Gobi, Gobi-Altai, Transaltai Gobi, Alashan Gobi.
Economic uses: Medical and forage plant.
PLabiatae Juss - Thymus gobicus