The article provides data on two orchid species, new in the flora of Kazakhstan. These are Neottia cordata from Markakol State Nature Reserve (East Kazakhstan) and Hammarbya paludosa from Mugodzhary Mts. (West Kazakhstan). The nearest previously known locations of Hammarbya paludosa are more than 500 km northwards from the reported location. The nearest previously known location of Neottia cordata is ca. 300 km north-east of the reported location. The new sites of these species are based on historical herbarium specimens collected in 1908 and 1934 and stored in the herbaria of LE, NS, and MW.

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The article reports on the floral records of seven plant taxa for the Mangystau region: Cakile maritima (subsp. euxina), Epilobium hirsutum, Rosa canina, Hordeum murinum. Among the finds, Cakile maritima subsp. euxina is a new genus and species for the flora of Kazakhstan, presumably it also grows on the northern shore of the Caspian Sea, in the Atyrau (Kazakhstan) and Astrakhan Regions (Russia). Epilobium hirsutum and Rosa canina are given for the first time for the Mangyshlak floristic district, and Hordeum murinum – for the Northern Ust-Urt.

We present a review of Orchidaceae Juss. of the northern part of Kazakhstan, within the steppe, forest-steppe and semi-desert habitats of the country (Pavlodar, northern Kazakhstan, Kostanay, Akmola, Aktobe, West Kazakhstan, partially Karaganda and East Kazakhstan regions). The investigation is based on herbarium materials, literature data and field observations. We examined material from the following herbarium collections: LE, MW, TK, MHA, SVER, KUZ, ALTB, AA, NUR, KG, KSPI, NS, NSK, MOSP, ORIS, PPIU, totalling 288 herbarium specimens. The paper presents data in the form of revision, focusing on orchids of the northern part of Kazakhstan. It is accompanied by maps indicating localities, notes on habitat preferences, phenology and conservation status. A total of 25 species of 16 genera were recorded, of which eight are included in the Red Book of Kazakhstan (2014). According to our data, we propose to enlarge the number of protected orchids by adding the following nine species: Corallorhiza trifida, Epipactis atrorubens, Gymnadenia conopsea, Hammarbya paludosa, Herminium monorchis, Liparis loeselii, Malaxis monophyllos, Neottia camtschatea and Spiranthes australis. The most widespread species in the studied region are Dactylorhiza incarnata, D. umbrosa and Epipactis palustris. The rarest species (single locality only) are Epipactis atrorubens, E. helleborine, Epipogium aphyllum, Hammarbya paludosa and Herminium monorchis.