A new species Lappula botschantzevii (Boraginaceae) from the Northern Africa

A new species, Lappula botschantzevii, is described from the desert zone of North-Western Africa. The new species belongs to the section Lappula and is close to the species L. patula, from which it differs in a smaller corolla, a scorpioid inflorescence (bilateral flowers) with loosely spaced flowers, a heteromorphic coenobium with two types of eremocarps: A) winged with glochids and a large number of spines along the edges of the disc of eremocarps and B) with a second short row of spines. The species is described based on samples from collections housed in three herbaria: Herbarium of the Komarov Botanical Institute RAS, Sankt-Peterburg (LE, Russia) and Muséum National d ‘Histoire Naturelle, Paris (P, France), Université de Montpellier (MPU). It is named after the Russian botanist Viktor Petrovich Botschantzev, who spent many years studying the flora of Africa and who collected samples of the new species. The absence of holotypes required the typification of the names of the studied species Lappula patula, L. capensis and L. eckloniana.

Lectotypification and authorship of the name of Melilotus tauricus (Fabaceae)

The article addresses the issue of lectotype designation of Melilotus tauricus (Fabaceae) and the authorship of this binomial. The species was described by F. Marschall von Bieberstein in 1819 as Trifolium, but no type was cited. The lectotype of Melilotus tauricus has not yet been designated. It is chosen here from among the original material stored in the Herbarium of the Komarov Botanical Institute, RAS (LE). It is also revealed that the priority of the combination belongs to C. Ledebour (1823) – M. tauricus (M. Bieb.) Ledeb. – instead of N. Seringe (1825) as it was previously believed.

Siberian plants in the collection «Alpine Slides» in the Peter the Great Botanical Garden of Komarov Botanical Institute of RAS

The article assesses the richness of the collection fund of Siberian plants that grew in the historical periodfrom 1954 to 1963 and grow in the modern period from 2011 to 2020 in the collection “Alpine Slides” of the Peter the GreatBotanical Garden. The main purpose of this article was to assess the preservation of the collection fund of Siberian andpartly Central Asian plants in the historical aspect. It was necessary to identify the plant species that are most resistant tocultivation in the conditions of St. Petersburg. As a result of the comparison, it was found that at present the collection fundof plants is quite poor, compared to the selected historical segment, and it needs to be replenished. The most stable in thecollection were 22 species, as they existed in the collection both in the selected time periods and exist at the present time.The age of individuals of individual species reaches almost 80 years – Brunnera sibirica, Bergenia × ornata, Actaea dahurica,A. simicifuga, Nepeta sibirica, Spodiopogon sibiricus and others. In the modern period of time, more than 20 species didnot pass the initial introduction test and existed in the collection for no more than 2–3 years. These include Viola altaica,Mertensia sibirica, Peucedanum baicalense, Orostachys thyrsiflora and others.

ON THE SEED RENEWAL OF TAMARIX RAMOSISSIMA LEDEB. IN THE COLLECTION ALPINARIUM OF PETER THE GREAT BOTANIC GARDEN

Information about Tamarix ramosissima Ledeb. has been growing in the Peter the Great Botanical Garden of the Komarov Botanical Institute of the Russian Academy of Sciences in St. Petersburg since 1939. It reached 6.2 m in height at the age of 82. It is considered the most winter-hardy, characterized by long flowering and high decorative effect. The first flowering was noted in 1942, for a long time the plants only bloomed without tying the fruit. After the hot summer of 2010, fruits were first formed and self-seeding appeared in 2011-2012. This is a unique fact for such northern latitudes. The species can be recommended for landscaping and promote its culture further north. In the context of climate change and its warming at the beginning of the XXI century, constant monitoring and continuous phenological observations of Tamarix ramosissima are important.

The history of the introduction of peppermint (Mentha × piperita L.) in Imperial Russia

Peppermint (Mentha × piperita L.) has been and remains one of the most widely used herbs for medicinal purposes since its discovery. It is used in cosmetics, personal care products, food and pharmaceutical products both because of its taste and aromatic properties. In addition, mint is used for non-medical purposes, which makes its cultivation economically feasible. Information about the introduction of peppermint in Russia since the beginning of the XVIII century is scattered and / or incomplete. The purpose of this work is to provide an extensive descriptive overview of the introduction to the cultures of this species in imperial Russia (from the beginning of the XVIII century to the October Revolution). Archival and historical documents on the cultivation of medicinal herbs and the development of peppermint culture in Imperial Russia, virtual herbariums of the V.L. Komarov Botanical Institute of the Russian Academy of Sciences and the M.V. Lomonosov Moscow State University were studied.

MORPHOLOGY OF POLLEN OF SOME MODERN REPRESENTATIVES OF MYRTACEAE FAMILY IN LIGHT AND SCANNING ELECTRON MICROSCOPE

The authors studied the morphology of pollen of the Myrtaceae family in a light and scanning electron microscope. The studied material includes pollen selected by the T.V. Kezina in the herbarium of the Botanical Institute named after V.L. Komarova (St. Petersburg). 18 modern species of the Myrtaceae family are described.

Herbarium collections of rare species of vascular plants from the Bryansk Region, found in the Herbarium of the Komarov Botanical Institute (LE)

The report contains information from herbarium labels of collections of 68 rare species of vascular plants from the Bryansk Region of the mid-XIX – early XX centuries, found in the Herbarium of the Komarov Botanical Institute (LE). 61 species listed in the regional Red Data Book. Most of the herbarium collections belong to the central and south-western districts (Klintsovsky, Mglinsky, Pochepsky, Pogarsky, Starodubsky, Surazhsky, Unechsky) of the Bryansk Region. The main collections were made by A. S. Rogovich in the middle of the XIX century on the territory of Mglinsky, Starodubsky and Surazhsky counties of Chernigov guberniya.

УСПЕШНЫЙ ОПЫТ АККЛИМАТИЗАЦИИ КЕДРОВОГО СТЛАНИКА (PINUS PUMILA (PALL.) REGEL) НА СЕВЕРЕ ЛЕНИНГРАДСКОЙ ОБЛАСТИ.

The Siberian dwarf pine (Pinus pumila (Pall.) Regel) has been successfully acclimatized on the northern shore of Glubokoye lake (Vyborg District of the Leningrad Region, the Russian Federation). This is the largest population (56 plants) of dwarf pine in Leningrad Region comprised of adult plants brought from the native habitat of the species. A survey of this population and statistical processing of data were carried out in comparison with the long known P. pumula population of the Scientific Experimental Station "Otradnoye" (Botanical Institute of the Russia Academy of Sciences). The dwarf pine successfully tolerates the present-day climate of the Northwest of Russia and yields full-grain seeds.

The genus Camelina (Cruciferae) in Mongolia and China reviewed on the basis of herbarium materials from the Institute of General and Experimental Biology of the ASM (UBA) and the Komarov Botanical Institute (LE)

Herbarium collections of the genus Camelina preserved at the Institute of General and Experimental Biology of the Academy of Sciences of Mongolia (UBA) and the Komarov Botanical Institute of the Russian Academy of Sciences (LE) were studied. The collections of these Herbaria contain materials of 3 species from Mongolia (C. caucasica (Sinsk.) Vass., C. sativa (L.) Crantz, C. sylvestris Wallr.) and 4 from China (C. sativa, C. linicola Schimp. et Spenn., C. microcarpa Andrz., C. sylvestris).

GINKGO BILOBA L. (GINKGOACEAE) AT PETER THE GREAT BOTANIC GARDEN OF BIN RAS

Ginkgo biloba L. has been known at Peter the Great Botanic Garden of the Komarov Botanical Institute RAS (Saint-Petersburg, Russia) since 1816. In modern collection it is represented since 1947, in vegetative state. In these conditions, it forms a well-developed tree with a single trunk and a well-developed crown; the best specimens have reached a height of 15.5 m at the age of 74 years old. Compared to previously published data, its size has increased significantly. The dates of phenostages of its seasonal rhythm of development correspond to the local Calendar of Nature; it is not damaged by spring and autumn frosts. The maximum percentage of rooting from cuttings was 88,5 %.The species may be recommended for Saint-Petersburg’s city planting. Earlier there was an opinion that Leningrad (Saint-Petersburg, not Kharkov) is the northern border of Ginkgo cultivation in living form of a tree (Komarova, Zamjatnin, 1990), but nowadays, in the second decade of the XXI century, its distribution may be prolonged further up to the North.