NEW TAXA OF THE GENUS LAPPULA (BORAGINACEAE) FROM EASTERN SIBERIA
Svetlana V. Ovchinnikova1
Central Siberian Botanical Garden SB RAS, Novosibirsk, Russia
Keywords: Boraginaceae, Lappula, section Lappula, eremocarps, new species, new variation, new locations, Baikal region, Eastern Siberia, Mongolia
Abstract
The appearance of new collections from Eastern Siberia and the reanalysis of previously studied collections from Siberia and Mongolia stored in Herbariums LE, MW, NSK, as well as the analysis of virtual collections hosted in the international Jstor database, made it possible to describe a species new to science Lappula turczaninowii Ovczinnikova from the kinship L. redowskii (Hornem.) Greene from the Redowskianae Ovczinnikova series of the type section , validate the names of two varieties of L. anisacantha (Turcz. ex Bunge) Gürke var. sibirica Popov ex Ovczinnikova and L. anisacantha var. uniserialis Popov ex Ovczinnikova, proposed by M.G. Popov in “Flora of the USSR”, as well as to clarify the range of L. stricta (Ledeb.) Gürke in the Baikal region. L. turczaninowii is described from the Irkutsk region, found on stony and rocky steppe slopes in the Baikal region, Transbaikalia, Yakutia, and Mongolia. It differs from the closely related species L. redowskii in the sparse soft pubescence of all plant organs, more densely arranged fruits on the fruiting twigs, the ovoid shape of the eremocarp disc, and the number of glochids (13-15) along the edge of the disc. For all new taxa, a nomenclature citation is given, labels of type specimens are cited, information is given on ecological features and distribution, and a table of diagnostic characters of the new species and the species in which it was included is compiled. The main diagnostic features of the taxa are illustrated in the figures, and photographs of type specimens are given. The cited new localities of L. stricta from the Irkutsk region complement the natural range of this species.
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