Flora of the Burulginsky Cape vicinities (lower reaches of the Indigirka River, North-East Yakutia)

For the first time, a complete annotated list of vascular plant species is provided and the local flora (LF) “Burulginsky Cape” is analyzed. It is the richest known LF in the lower reaches of the Indigirka River (262 species and subspecies, 109 genera, 41 families), including a number of the species rare in the northern Yakutia and seven species listed in the regional Red Book, as well as taxa endemic to the Arctic ×Trisetokoeleria jurtzevii Probat. and ×T. taimyrica Tzvel. The similarity of the studied flora with LFs from the East Siberian and Chukotka provinces of the Arctic floristic region (lower reaches of the Anabar, Lena, Indigirka, Kolyma Rivers, and Western Chukotka) is discussed; its type is determined as the East Siberian hypoarctic flora, with a predominance of mesophytes in its composition and with a noticeable participation of the species of arid habitats. The territory of the Burulginsky Cape LF with an area of about 200 km2 is recommended to include in the category of specially protected objects as an area of increased diversity of vascular plants.