Platanthera bifolia (L.) Rich.

Kubentayev, Serik A., Efimov, Petr G., Alibekov, Daniyar T., Kupriyanov, Andrey N., Izbastina, Klara S., Khalymbetova, Aizhan E. & Perezhogin, Yuri V., 2023, Review of Orchidaceae of the northern part of Kazakhstan, PhytoKeys 229, pp. 185-213 : 185

Platanthera bifolia (L.) Rich.

Distribution in adjacent reg.

Russia (European Russia, Ural, Siberia), Kazakhstan (Altai).

Specimens examined and literature records.

Tobol-Ishim: Kostanay Region: Mendykara District : Borovskaya water protection forest dacha, 28 Jul 1923, Rusanov s.n.. (LE!); near Borovskoye, 10 Jul 1977, Pugachev s.n.. (LE!); botanical nature monument "Plantations of birch and pine forests near Borovskoye Lake", 24 Jun 2009, students 195 (KSPI!); Zhitikara District : botanical nature monument "Relict larch-birch grove with Sukachev larch", 10 Jun 2012, Perezhogin (personal observation); Auliekol District : near Kazanbasskoye ( Pugachev 1994); near Kalininskoye ( Pugachev 1994); near Auliekol ( Pugachev and Masyukova 1969). North Kazakhstan Region: Kyzylzhar District : right shore of Ishim River , near Krasnoyarka, 30 Jun 1971, Afonina and Litvinenko s.n.. (NKU!); same loc., 29 Jun 1971, Stepanova and Shakhvatova s.n.. (NKU!); same loc., 29 Jun 1971, Sologub and Zelinskaya s.n.. (NKU!); same loc., 28 Jun 1971, Fesan and Kosmagambetova s.n.. (NKU!); same loc., 29 Jun 1971, Trushcheleva and Shirokikh s.n.. (NKU!); same loc., 26 Jun 1972, Kudinova and Schneider s.n.. (NKU!); same loc., 24 Jun 1972, Makayun s.n.. (NKU!); same loc., 27 Jun 1972, Rosinskaya and Khrushchev s.n.. (NKU!); same loc., 29 Jun 1972, Shegebaev and Zhampeisov s.n.. (NKU!). Kokchetav: North Kazakhstan Region: Aiyrtau District : near Lobanovo, Kozhevnya swamp, 28 May 2020, Kubentaev et al. s.n.. (NUR!) .

Habitat and ecology.

Forest edges and glades, dry meadows, scrub thickets, thinned forests and the outskirts of bogs.

Phenology.

Flowering in May-Jul; fruiting in Jul-Aug.

Conservation status.

The species is included in the Red Book of Kazakhstan (category III) as an endangered species. It is protected on the territory of the nature monument "Stands of birch and pine forests near Borovskoye Lake"; the botanical nature monument "Relict larch-birch grove with Sukachev larch"; Kokshetau State National Nature Park; and the “Sogrov” State Nature Reserve.

Notes.

There is an old report of P. bifolia for Kokchetav FR (without detailed locality) by Semenov (1928), which was omitted from the later floristic accounts of Kazakhstan (Kusnetsov and Pavlov 1958) and Kazakh Upland ( Karamysheva and Rachkovskaya 1973; Sultangazina et al. 2014; Kupriyanov 2020). Here, we confirm the old data for this floristic region (and simultaneously, for Kazakh Upland) through our recent gathering from the vicinity of Lobanovo, North Kazakhstan Region.