Heracleum sosnowskyi Manden is a perennial (biennial) monocarpic herbaceous plant that bears fruit once, and in 98–99% cases, dies after. Hogweed (Heracleum sosnowskyi) mericarp, outer side Figure 3 – Hogweed ( Heracleum sosnowskyi) mericarp, inner side Hogweed. Heracleum Sosnowskyi was discovered in and described as a separate species in by I. P. Mandenova. Its name is derived from the surname of a.
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Leaves are divided into segments and can reach up to 3 m in length. White or pinkish flowers are organized in umbels and flower White or pinkish flowers are organized in umbels and flowering occurs in the second year or later Nielsen et al.
An average plant can produce around fruits Tkatschenko, The mother plant dies after producing seeds, however the plant is reported to live up to heraclwum years before flowering Satsiperova, It was placed into section Pubescentia Manden. According to Mandenova, H.
Later authors consider H.
Heracleum sosnowskyi (Sosnowsky’s hogweed)
Grossheim, or H. Kraynyuk speculate that H. The stem is ridged and sparsely hairy with purple blotches. Leaves of mature plants are divided to a varying extent, either into three approximately equal parts, which may themselves be similarly hracleum ternateor into more than three leaflets arranged in rows along the central leaf stalk pinnate.
The leaf margins have short rounded teeth. On the upper surface the leaves are hairless and below slightly hairy. The flowers are white, sometimes pinkish.
Outer petals are radiate, mm long. Flowers are organized in slightly convex compound umbels cm across. Umbels have rays with only short hairs. Flowering typically lasts from June to August.
sosnowskyk The fruits are egg-shaped or oval mericarps; mm long, mm wide, densely hairy when unripe. Ripe fruits have wings with numerous spines situated on small spherical or ovoid swellings.
Weed Seed: Heracleum sosnowskyi (Hogweed) – Canadian Food Inspection Agency
Fruits have very conspicuous oil ducts that do not reach the fruit base Nielsen et al. Countries in this region that have H. Xosnowskyi locality lies in Meschetia sosnowskyii, Adygeni in Georgia.
The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. In similar experiments began in Leningrad St Petersburg – in cooperation with three institutes the Komarov Botanical Institute and two agricultural institutes.
The aim of the experiments and breeding was to produce highly productive cultivars that would have minimal furanocoumarin content. Seeds obtained heacleum an institute in St. At the end of s the plant was also introduced as a potential fodder plant Risk of Introduction Top of page The invasive nature of H. However, it is not clear how seriously this problem is seen in Russia as very few records come from this country as an exception see Filatova and Vlasov, and some researchers involved with H.
Studies on natural enemies of H. Few studies later on mention the potential for biological control and no reports in the literature were found to indicate intentional use of any biocontrol agents. Environmental Impact Top of page Impact on Habitats. The phototoxic reaction can be activated 15 min after contact, with a sensibility peak between 30 min and 2 hours. After about 24 hours, flushing or reddening of the skin erythema and excessive accumulation of fluid in the skin oedema appear, followed by an inflammatory reaction after three days.
Approximately one week later a hyper-pigmentation usually darkening the skin occurs which can last for months. The affected skin may remain sensitive to ultraviolet for years. In addition, several furanocoumarins have been reported to cause cancer carcinogenic and to cause malformation in the growing embryo teratogenic Nielsen et al.
However, in parts of northern Russia agricultural production continues to this day, but the economic value of trials or farm-scale production is not known. Owing to their large size, stands of H. Involving the public in locating stands through a public awareness raising campaign is particularly suitable.
In cases where more tall invasive Heracleum species occur in a territory of interest, distribution can be mapped together as distinguishing between the species requires specialist knowledge. Another useful method, which could be used to determine the distribution of these conspicuous aliens, is aerial heraclum during the flowering and early fruiting soanowskyi from the second half of June to July; Nielsen et al.
According to Mandenova there are two characteristic and constant features of H. Other features distinguishing H. A best practice manual has also been published by members of the EU-funded Giant Xosnowskyi project http: Andersen UV; Calov B, Long-term effects of sheep grazing on giant hogweed Heracleum mantegazzianum.
Diseases and pests of cow parsnip.
[Sosnowsky’s hogweed – toxicology and threat to health].
Bell CR; Constance L, Chromosome numbers in Umbelliferae. American Journal of Botany, The evaluation of some hogweed species according to their agricultural importance. Rastjitjelnye Resoorsy Plant Resources Control of Heracleum mantegazzianum by grazing. Ecology and management of giant hogweed Heracleum mantegazzianum [ed. The management of giant hogweed in an Irish river catchment. Journal of Aquatic Plant Management, Flora of Turkey and the East Aegean islands.
Main results of breeding work with species of Heracleum L. Rastitel’nye Resursy, 25 4: Agronomic and biological characteristics of some Heracleum species and interspecific hybrids. Izvestiya Timiryazevskoi Sel’skokhozyaistvennoi Akademii, No. Comparative effectiveness of the cultivation of Heracleum sosnowskyi and traditional fodder crops in central region of the nonchernozem zone of RSFSR.
Trials of new fodder crops on peat soils in conditions of Latvia. Hybridization as a stimulus for the evolution of invasiveness in plants? EPPO list of invasive alien plants. European and Mediterranean Plant Protection Organization. Sosnowskyi cowparsnip colonizes new areas. Zashchita i Karantin Rastenii, No.
Heracleum sosnowskyi in the control of ovine strongyliasis. Grace J; Nelson M, Insects and their pollen loads at a hybrid Heracleum site.
New Phytologist, 87 2: Greuter W; Raus T, Conspectus of alien plant species of Lithuania. Botanica Lithuanica, wosnowskyi 3: New records for the flora of Turkey and two new species from Anatolia. Notes from the Royal Botanic Garden Edinburgh, Journal of Pest Science, 79 1: Taxonomy, identification, genetic relationships and distribution of large Heracleum species in Europe. Invasive species of Heracleum in Europe: Diversity and Distributions, 13 1: The effect of phytophages on the yield of green matter of cow parsnip Heracleum sosnowskyi Manden.
The effect of phytophages on seed weight and germination capacity of cow parsnip Heracleum sosnowskyi Manden. Wp yw fitofagow na plon i si e kie kowania nasion barszczu Sosnowskiego Heracleum sosnowskyi Manden.
Cow parsnip harvest hegacleum the insect fauna. Activity of furanocoumarin complexes and fractions from Archangelica officinalis Hoffm. I Heracleum sosnowskyi Manden. Herba Polonica, 42 1: Kostecka-Madalska O; Bankowski C, Zawartosc olejku eterycznego w Heracleum Sosnowskyi Manden. Laivins M; Gavrilova G, Heracleum sosnowskyi in Latvia: Enrichment of forest-grasslands with fodder plants. Safety and antiparasitic efficacy of a formulation of Heracleum sosnowskyi.
Koch, with notes on evolution of their psbA-trnH sequences.