Tilia tomentosa Moench.
2037 (2). T. tomentosa Moench. Verz. Ausl. Baume Wissenst. (1785) 136; Koch, Dendrol. I (1869) 477; Hayek, Prodr. Fl. Penins. Balc. I (1925) 555; Browicz, Fl. Eur. II (1968) 247; T. alba Waldst. et Kit., Pl. Hung. rar. III (1802) 2, t. 3; Vel., Fl. Bulg. (1891) 102; T. argentea Desf. in DC., Cat. Horti Monsp. (1813) 150; Стоян., Стеф., Фл. Бълг., изд. 1, II (1925) 743; Т. rotundifolia Vent., Mem. Acad. Sci. Paris IV (1803) 12; Exs.: PI. Exicc. Austro-Hung. No 1882; Pl. Exicc. Rom. No 387; Dörfl., Herb. Norm. No 685, 3814 — Cpeбролистна липа
Fam: Tiliaceae Juss.
Genus: Tilia L.
Species: Tilia tomentosa Moench.
English Name: Silver linden, Silver lime
Perennial plant. Root system developed in both depth and surface, giving multiple shoots. Stems up to 25 m high, straight. The young crust ash to dark gray, old to 3 cm thick, dark gray, deeply cracked. The branches elevated or horizontal, the crown is dense, pyramidal. The young branches gray ash, covered with falling simple veins. Pimples 4 - 5 mm long, ovate, rounded on the top, gray, covered with thick simple hairs, with 2 - 3 flakes. Leaf petioles 2 - 6 cm long, covered at the base and under the leaf blade with groups of simple hairs, rarely naked. Leaves 4 - 12 cm long, 3.5 - 12.0 cm wide, broadly heart-shaped to rounded, to the top suddenly narrow, with a slightly asymmetrical base, acutely finely jagged, rarely with buttocks (but non-cushions); the young on both sides with star-shaped hair; the old on top light to dark green, with single simple, bottom with dense starry hairs. The inflorescence leaflet is 1.5 - 10.0 cm long, 0.6 - 1.5 cm wide, lance to linearly lance, on the tip irregularly rounded up to 1/2 with the blooming axis covered with dense, top with single simple hairs or naked. Blossoms 8 - 10, bipolar, blossom petiole covered with rare simple hairs or naked; sepals 3,5 - 5,0 mm long, 1,8 - 2,2 mm wide, backward heartbeat, to the top slightly pointed, to the top and base with long simple hairs; petals 4 - 7 mm long, 2.0 - 3.5 mm wide, elliptical, on the top wrong shallowly cut, short nails, naked, yellowish; stamens shorter than the crown; the style longer than it. The walnut bead, 0.8 - 1.0 cm long, 0.7 - 0.9 cm wide, hard, with 4 distinct longitudinal ribs, covered with thick simple hairs.
Economic importance. Park and decorative element.
From: „Флора на Н Р България”, том XII, БАН, София, (1979)
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Tilia tomentosa, known as silver linden in the US and silver lime in the UK, is a species of flowering plant in the family Malvaceae, native to southeastern Europe and southwestern Asia, from Hungary and the Balkans east to western Turkey, occurring at moderate altitudes.
Tilia tomentosa is a deciduous tree growing to 20–35 m (66–115 ft) tall, with a trunk up to 2 m (7 ft) in diameter. The leaves are alternately arranged, rounded to triangular-ovate, 4–13 cm long and broad with a 2.5–4 cm petiole, green and mostly hairless above, densely white tomentose with white hairs below, and with a coarsely toothed margin. The flowers are pale yellow, hermaphrodite, produced in cymes of three to ten in mid to late summer with a pale green subtending leafy bract; they have a strong scent and are pollinated by honeybees. The fruit is a dry nut-like drupe 8–10 mm long, downy, and slightly ribbed.
Cultivation and uses
It is widely grown as an ornamental tree throughout Europe. The cultivar 'Brabant' has a strong central stem and a symmetrical conic crown. The cultivar 'Petiolaris' (pendent or weeping silver lime) differs in longer leaf petioles 4–8 cm long and drooping leaves; it is of unknown origin and usually sterile, and may be a hybrid with another Tilia species. It is very tolerant of urban pollution, soil compaction, heat, and drought, and would be a good street tree in urban areas, apart from the problems it causes to bees. In cultivation in the United Kingdom, T. tomentosa 'Petiolaris' has gained the Royal Horticultural Society's Award of Garden Merit.
An infusion made from the flowers of T. tomentosa is antispasmodic, diaphoretic and sedative. This may be attributable to the presence of pharmacologically active ligands of benzodiazepine receptor 
A widespread belief is that the nectar of this species contains mannose, which can be toxic to some bees. This is incorrect; the sight of numerous comatose bees found on the ground at flowering time is rather a result of the paucity of nectar sources in late summer in urban areas.
This species, while fragrant in spring, drops buds and pollen during the spring and fall. It is not a good sidewalk tree for that reason, requiring frequent streetcleaning.
From Wikipedia, the free encyclopedia * * * Flowering Time: Blooms: VI, fruitful: VII - IX. Distribution in Bulgaria: Growing in mixed deciduous forests, mostly on dry soils in the mountains. Spread, from 800 to 1500 m altitude. (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.
Distribution: Central (Northern Hungary) and South-East (Balkan Peninsula, East to Western Ukraine) Europe, Southwest Asia.
Conservation status and threats: not protected species in Bulgaria by the Biodiversity Law. - Biological Diversity Act - http://eea.government.bg/bg/legislation/biodiversity/zbran_22.08.15.pdf
Medical plant: yes, it is medical plant - Medicinal Plants Act - http://eea.government.bg/bg/legislation/biodiversity/ZLR_en.pdf
References: „Флора на Н Р България”, том XII, БАН, София, (1979), Wikipedia, the free encyclopedia
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