Материалы к флоре болот Тамбовской области

Тамбовская область находится в лесостепной природной зоне, которая характеризуется сравнительно низкой заболоченностью и сильным преобразованием естественных ландшафтов. В XX веке болота подверглись значительному антропогенному воздействию, что отразилось на флоре, но почти не было зафиксировано в публикациях последних трех десятилетий. Нами в 2011–2021 гг. маршрутно-ключевым методом обследовано 46 болот в 13 районах Тамбовской области, на основе полученных результатов составлен список высших растений, указано их распределение по основным типам болот (низинные, переходные, верховые) и встречаемость. На болотах Тамбовской области выявлено 158 видов сосудистых растений (108 родов и 55 семейств) и 33 вида мхов (14 родов и 9 семейств). Наиболее часто на болотах региона из сосудистых растений встречались Salix cinerea, Typha latifolia, Lysimachia vulgaris, L. thyrsiflora, Carex acuta, Betula pubescens, Calamagrostis canescens, Phragmites australis, Lycopus europaeus, из мхов – Sphagnum fallax, S. flexuosum, S. angustifolium. На болотах зафиксированы популяции 22 видов, включённых в Красную книгу Тамбовской области. БлагодарностиРабота проведена в рамках выполнения государственного задания 121051100099-5.

Salix cinerea (grey sallow).

S. cinerea (grey sallow) is included in the section Capreae of subgenus Caprisalix (Rechinger, 1964). It is a broadleaved willow, typically a large shrub generally much branched from the base with numerous intercrossing branches. Bark is dark grey, becoming fissured with age. The species forms a broad, rounded crown. Twigs are densely pubescent, remaining so at least until the end of the first year; wood of peeled twigs with long, scattered striae. Leaves very variable, usually ovate or oblanceolate, 2-9 cm long, 1-3 cm wide, dull grey-green and pubescent above or dark green and slightly lustrous. Catkins appearing in advance of the leaves in March and April. Male flowers with 2 free stamens. Capsule up to 10 mm (Meikle, 1984; Newsholme, 1992). S. cinerea is a Eurasian species, common throughout Europe, from the Mediterranean to Scandinavia (including Spain and Portugal, Sicily, Sardinia, Corsica, the Aegean Islands and Turkey). Its range extends eastward to Asia, from the Crimea to the Caucasus, from northern Iran to Siberia, and north of the Caspian and Aral seas to the Chinese border (Jalas and Suominen, 1976; Skvortsov, 1999).It is a useful species in erosion control projects, and to protect marshlands and riverbanks. Because of its early flowering, it is also important for honeybees (Schiechtl, 1996). Hybrids with S. viminalis (S. × calodendron) are grown in the UK, Germany and Denmark to produce biomass as a energy source (McElroy et al., 1983).

RIPARIAN AND SWAMP FORESTS AND SCRUB OF THE PINÉ PLATEAU (TRENTINO, NORTHERN ITALY)

The riparian and swamp forests/scrub of black alder (Alnus glutinosa), white alder (Alnus incana), grey willow (Salix cinerea) and bay willow (S. pentandra) of the Piné Plateau (Trentino, central Alps) are described here in terms of their floristic composition. They are assigned to the following associations: Filipendulo vulgarisAlnetum glutinosae, Stellario nemorum-Alnetum glutinosae, Carici elongatae-Alnetum glutinosae, Carici elataeAlnetum glutinosae, Frangulo-Salicetum cinereae and Salicetum pentandro-cinereae. In addition, information regarding the distribution of the previous woody communities in the Trentino-Alto Adige Region and their corresponding vegetation series and geosigmeta are provided.

Sphegigaster hexomyzaeVikberg, 1983, (Hymenoptera: Chalcidoidea, Pteromalidae) new to the British Isles with notes on the parasitoids of gall-forming Agromyzidae (Diptera) in the genus Hexomyza

Sphegigaster hexomyzae Vikberg (Pteromalidae) is added to the British list from material reared from galls of Hexomyza simplicoides Hendel (Agromyzidae) on Salix cinerea in Yorkshire. Literature records of parasitoids from gall-forming Hexomyza are reviewed.