Қарлы эвкалипт (Qarly evkalipt)

Species of plant
Speciesbox
|name = Snow gum
|image = Snow Gum. jpg
|image caption = Eucalyptus pauciflora near Thredbo
|status system = IUCN3.1
|status = NT
|status ref =
|genus = Eucalyptus
|species = pauciflora
|authority = Sieber ex Spreng. |synonyms ref = is a species of tree or mallee that is native to eastern Australia. It has smooth bark, lance shaped to elliptical leaves, flower buds in clusters of between seven and fifteen, white flowers and cup shaped, conical or hemispherical fruit. It is widespread and locally common in woodland in cold sites above altitude.

Eucalyptus pauciflora is a tree or mallee, that typically grows to a height of and forms a lignotuber. It has smooth white, grey or yellow bark that is shed in ribbons and sometimes has insect scribbles. Young plants and coppice regrowth have dull, bluish green or glaucous, broadly lance shaped to egg shaped leaves that are long and wide. Adult leaves are the same shade of glossy green on both sides, lance shaped to curved or elliptical, long and wide, tapering to a petiole long. The flower buds are arranged in leaf axils in cluster of between seven and fifteen, sometimes more, on an unbranched peduncle long, the individual buds on pedicels up to long. Mature buds are oval, long and wide with a conical to rounded operculum. Flowering occurs from October to February and the flowers are white. The fruit is a woody, cup shaped, conical or hemispherical capsule long and wide.

Eucalyptus pauciflora was first formally described in 1827 by Kurt Polycarp Joachim Sprengel from an unpublished description by Franz Sieber. Sprengel published the description in Systema Vegetabilium. The specific epithet pauciflora is from the Latin pauciflorus meaning "few flowered". The term pauciflora (few flowered) is a misnomer, and may originate in an early collected specimen losing its buds in transit. Eucalyptus pauciflora subsp. debeuzevillei (Maiden) L. A. S. Johnson & Blaxell in Victoria, New South Wales and the Australian Capital Territory;
Eucalyptus pauciflora subsp. hedraia Rule in Victoria;
Eucalyptus pauciflora subsp. niphophila (Maiden & Blakely) L. A. S. Johnson & Blaxell in New South Wales, the Australian Capital Territory and Victoria;
Eucalyptus pauciflora subsp. parvifructa Rule in Victoria;
Eucalyptus pauciflora Sieber ex Spreng. subsp. pauciflora is found in Queensland, New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania. In Tasmania the species hybridises with Eucalyptus coccifera and Eucalyptus amygdalina.

Snow gum is amongst the hardiest of all eucalyptus species, surviving the severe winter temperatures of the Australian Alps. The species regenerates from seed, by epicormic shoots below the bark, and from lignotubers. It is the most cold tolerant species of eucalyptus, with E. pauciflora subsp. niphophila surviving temperatures down to 23 °C ( 9 °F) and year round frosts. It has been introduced to Norway.

At altitudes where stands of snow gum coincide with seasonal snowfall above an altitude of about , the trees have been shown to increase snowpack accumulation and moderate melt, making snow gum critically important to the hydrology and water resources of southeast Australia. Contrary to characteristics of needle leaf forests, snow gums don't frequently intercept large quantities of snowfall on branches and leaves such that increased evaporation or sublimation would occur. It is estimated that the 2019 2020 bushfires impacted 462 km2 (33%) of mapped snow gum forest that regularly has seasonal snowpack, which would equate to a reduction in annual snowpack runoff of 63.3 gigalitres (about 25,320 olympic swimming pools).

In cultivation in the UK, Eucalyptus pauciflora subsp. niphophila and Eucalyptus pauciflora subsp. debeuzevillei have gained the Royal Horticultural Society's Award of Garden Merit.