Euphorbia palustris L.
1968 (5). Е. palustris L., Sp. Pl. ed. 1 (1753) 462; Boiss. in DC., Prodr. XV, 2 (1862) 121; Fl. Or. IV (1875) 1100; Hayek, Prodr. Fl. Penins. Balc. 1 (1924) 120; Rössler, Beich. Bot. Centr. LXII (1943) 124; Прох., Фл. СССР XIV (1949) 355; Smith et Tutin, Fl. Eur. II (1968) 217 — Блатна млечка
Fam: Euphorbiaceae Juss.
Genus: Euphorbia L.
Species: Euphorbia palustris L.
English Name: Marsh spurge, Marsh euphorbia
Perennial plant. Stems few, 50 - 150 cm high, erect, hollow, thickened to 7 - 14 mm at the base, hardening, glabrous, often reddish during flowering, slightly bluish green, with numerous infertile branches (in some cases exceeding the upper inflorescence), in the upper its part with 1 - 7 lateral flowering twigs. Stem leaves diluted, sat down, linear-lance, lance or oval-lance, pointed or obtuse, entire or slightly obscured at the top with a narrow light cartilaginous stripe, blue-green, 2 - 6 (8) cm long and 6 - 15 mm wide; those of infertile twigs linearly lance, acute, 15 - 50 mm long, 3 - 8 mm wide, entire. Top flowering branches 5 - 8, 3 - 5 cm long, three-part at the top, then two-part. Inflorescence leaves 5 - 7, ovate or oval-elliptic, glabrous, obtuse, when flowering light yellow-green, subsequently green, 10 - 30 cm long and 8 - 20 mm wide. Bracts ovate or oval, obtuse, glabrous, light green to yellowish, 8 - 10 mm long and 5 - 12 mm wide, three. Perianth broadly bell-shaped, on a petiole up to 3 mm long, naked, 2.5 - 3.5 mm long and 3.5 - 4.5 mm wide; partitions oval-spatulate, divided or serrated; glands 4, transversely oval, 1.2 - 1.6 mm long and 0.4 - 0.8 mm wide, entire. The box on a petiole up to 3 mm long, spherical, flattened, 45 - 50 mm long and 6 - 7 mm wide, deeply three-part, the shares of the back broadly rounded, with numerous, short-cylindrical or warty growths, naked; the styles up to 2 mm long, fused at the base, deeply bipartite. Seeds ovoid, slightly dorsally belly flattened, slightly truncated at the apex, 3.2 - 3.7 mm long, 2.7 - 3.2 mm wide and 2.6 - 2.9 mm thick, cross section broadly elliptical, almost round; the four seed surfaces strongly convex; chalazate round, flat; the hilus zone transversely elliptical, obscure, flat or slightly sunken; dark brown to black, the seam filamentous; surface smooth, shiny, fine mesh structure; the appendage broadly conical, low, adhering to the hilus zone.
From: „Флора на Н. Р. България”, том VII, Издателство на БАН, София, (1979)
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Euphorbia palustris, the marsh spurge or marsh euphorbia, is a species of flowering plant in the family Euphorbiaceae, native to marshland throughout much of mainland Europe and western Asia. It is an herbaceous perennial growing to 90 cm (35 in) tall and wide, with narrow leaves turning red and yellow in autumn, and persistent, bright acid yellow flower-heads (cyathia), 15 cm (6 in) across, in spring.
It was published and first described by Carl Linnaeus in his book, Species Plantarum on page 462 in 1753.
It prefers permanently moist conditions in full sun, hence the common name "marsh spurge" and the Latin specific epithet palustris, "of marshland". It is thought to be an ideal plant for gardening because it has a different colour for almost all of the seasons.
Euphorbia palustris has gained the Royal Horticultural Society's Award of Garden Merit.
Like all euphorbias, all parts of the plant are toxic if ingested, and cut stems produce an irritant sticky sap.
From Wikipedia, the free encyclopedia
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Flowering Time: Blooms:: V - VI, fruitful: VI - VIII.
Distribution in Bulgaria: Growing near swamps, river floodplains and swampy meadows. Danube plain (Vidin, Ruse region), Sofia region (Kazichene), Znepol region (village of Dolni Rakovets, Radomir region), Tundzha hilly plain (Karnobat), between 200 and 800 m altitude.
Indicated for: Danube plain (Oryahovsko — Urum., 1935), Vitosha region (Vitosha - Urum., 1910; Lyulin - Urum., 1929), Western Rhodopes (Eli-dere, Batak - Urum., 1906), Thracian lowland (Plovdiv region, Pazardzhik region - St. George, 1889; Vel., 1891), Tundzha hilly plain (Aytosko, Burgas region - Urum., 1901). (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.
Distribution: Eurasia (northern and central parts, rarely in the south).
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
Fam. Euphorbiaceae Juss. is protected in Bulgaria by the Biodiversity Law. - Biological Diversity Act - http://eea.government.bg/bg/legislation/biodiversity/zbran_22.08.15.pdf
Medical plant: it is not - Medicinal Plants Act - http://eea.government.bg/bg/legislation/biodiversity/ZLR_en.pdf
References: „Флора на Н. Р. България”, том VII, Издателство на БАН, София, (1979), Wikipedia, the free encyclopedia
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