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Perennial herbaceous plants with more or less erect, slightly woodened stems and spirally arranged palm-similar vested leaves; basal leaves with stem, stem leaves sessile. The flowers large, single or collected from 2 to 4 in semi sunshade, bisexual, aktinomorfos; flower parts arranged spirally. Perianth leaflets 5 - 15, yellow; nectar pouches 5 - 15, small, narrow, yellow, nectar of the recess near the base. Numerous stamens, attached protruding color bed. Carpophores numerous, seated, free, ovaries single station, with many arranged in two rows of ovules. Fruit assembly of many seed follicles, dissolving belly seam. Homogamus, visited by various of insects.
Economic importance. All representatives are poisonous.
¹ developed by M. Markova
„Флора на НР България”, т. IV, БАН, София, (1970)

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Trollius is a genus of about 30 species of plants in the family Ranunculaceae, closely related to Ranunculus. The common name of some species is globeflower[1] or globe flower. Native to the cool temperate regions of the Northern Hemisphere, with the greatest diversity of species in Asia, trollius usually grow in heavy, wet clay soils.
They are mostly herbaceous perennials, produce numerous fibrous roots, with bright yellow flowers, though some have orange to lilac coloured flowers. The name "globe flower" refers to the petals of T. europaeus and T. × cultorum which are curved over the top of the flower, forming a globe. But T. pumilus has flatter flowers, and T. chinensis has open flowers with prominent stamens.[2]
All trollius species are poisonous to cattle and other livestock when fresh, but their acrid taste means they are usually left uneaten. They are, however, used as food plants by the larvae of some Lepidoptera species including Silver-ground Carpet.
Some species are popular ornamental flowers in horticulture, with several cultivars selected for large and brightly coloured flowers. The hybrid T. × cultorum[3] in particular is a source of several garden cultivars, including 'Superbus', which has gained the Royal Horticultural Society's Award of Garden Merit.[4]
From Wikipedia, the free encyclopedia

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References: „Флора на НР България”, т. IV, БАН, София, (1970), Wikipedia, the free encyclopedia

Distribution in Bulgaria: (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.
Distribution:

This genus is presented in Bulgaria by only one species:

Trollius europaeus L. - Globeflower, Common Globeflower, European Globeflower

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