Trifolium medium L.

1826 (43). Т. medium L., Amoen. Acad. IV (1759) 105; Hayek, Prodr. Fl. Penins. Balc. I (1926) 871; Стоян., Сборн. БАН 26 (1930) 96; Coombe, Fl. Eur. II (1968) 169 — Междинна детелина

Fam:   Leguminosae Juss. (Fabaceae)
Genus:   Trifolium L.
Species: Trifolium medium L.
English Name: Zig zag clover


A perennial plant. Rhizome creeping, at the top often woodened. Stems few to numerous (10.0) 30.0 - 40.0 (50.0) cm high, low, more or less zigzag curved, at least in the upper half scattered or densely-fitting or spread fiber, rarely targets almost naked. Stipule lanceolate or linear lanceolate, the edge often membranous, entire, without ears, 1/2 - 2/3 of its length fused with petiole, equal to it, up a much shorter, grassy, on the surface, but most often on the edge spread or off-standing semi fiber. Leaves with equal of leaflets, longer or above with shorter stems of them, all fitting or spread fibrous or almost naked. Leaflets (10.0) 15.0 - 40.0 (50.0) mm long and (5.0) 8.0 - 25.0 (30.0) mm wide, elliptical, elliptical back ovoid, elliptical to rhombic elliptical back ovate, almost entire, atop entire or shallow concave with short little awn and 10 - 40 (50) dichotomous in the meshwork-like branched, to an end tapering or thickening, and in this case strongly convex and the edge curved lateral veins evenly off-standing semi or spread fibrous or only midrib and edge fitting fibrous, all equal to each other, to 1.0 mm long, naked or fibrous stems. Heads 20.0 - 35.0 mm in diameter, spherical or broadly ovate, loose, single, on the top, on shorter than them and the leaves of the inflorescence more or less fibrous stems or almost seated. Flowers (10.0) 12.0 - 16.0 (22.0) mm long, on very short stems, without bracts, slightly removed from inflorescences axis. Calyx 8.0 - 16.0 mm in length; tube yellowish, 10 (20) clearly bulging veins, fitting shorter or longer fibrous or goals, throat closed with wide ring of dense hairs; teeth lance styliform to linear lanceolate, always essentially fibrous, bluish green, lower  with 1/3 longer than the above 4 and and up to 2 times longer than the tube, or equal to it, the upper equal with the tube or up to 4 times longer, long sparsely spread fibrous, glandular hairs at the base thickened. Corolla light purple-red, then brown overblown, 1/2 - 1/3 longer than the calyx. Lance flag back from mid narrower claw, smooth, longer than the wings. Wings linear elliptical, with 2 times shorter than the nail leaf blade and well-developed, 8 - 9 times shorter than the latch nail. Keel slightly shorter than the wings with a lance elliptical, 2 times shorter than the nail curved leaf blade. Beans included in the tube of the calyx, monocotyledon, webbed, splits lengthwise.


subsp. medium; Coombe, op. c. p. 170; T. medium subsp. flexuosum var. typicum Aschers. et Graebn., Syn. VI (2) (1908) 567; Hayek, I.c .; Stoyan. Steph., Fluoro. Bul. Ed. 3 (1948) 666; T. flexuosum Jacq., Fl. Austr. IV (1776) 45. Stems fitting fibrous or almost naked. Leaflets 20.0 - 50.0 mm in length and 9.0 - 20.0 mm wide, semi-fitting uniform fibrous, are not Leatherback and evenly thick veins. Flowers 15.0 - 22.0 mm long. Lower teeth of the calyx equal to the tube. Northeast Bulgaria (Karakuz - Silistra).
In other areas, mainly transitional forms to the following two subspecies.
subsp. škorpili Vel., Sitzber. Bohm. Ges. Wiss. XXIX (1894) 7; T. medium subsp. flexuosum var. škorpili (Vel.) Aschers. et Graebn., op. c. p. 569; fHayek, 1. c .; Stoyan. Steph. Kitan., Фл. Бълг. изд. 4, II (1967) 611; T. medium var. škorpili (Vel.) Stoj. et Stef., Фл. Бълг. изд. 3 (1948) 666; Stoyan. 1. a. Stems fitting or poorly spread scattered fibrous. Leaves to the edge with convex covered with streaks, leathery, on the edge and in the median nerve fiber (10.0) 15.0 - 25.0 (35.0) mm long and (5.0) 8.0 - 15.0 ( 20.0) mm wide. Flowers 10.0 - 12.0 (14.0) mm long. The lower cam calyx to 2 times longer than the tube. Black sea coast, Northwestern Bulgaria, Fore, Central and Eastern Stara Planina (Balkan mountain), Vitosha region, Rila, Central and Eastern Rhodopes Thracian Lowland, Tundzha hilly plain, Strandzha.
subsp. balcanicum Vel., Fl. Bulg. (1891) 135; Hayek, 1. c. Stoyan. Steph. Kitanov, Фл. Бълг. изд. 4, II (1967) 611; T. medium var. balcanicum (Vel.) Stoj. et Stef., Фл. Бълг. изд. 1, II (1925) 648; Stoyan. 1. c; T. pseudomedium Hausskn., Mitth. Geogr. G. Gess. Thiir. Sitzber. 70 (1887) 555. Stems densely fibrous spread. Leaflets with slightly curved along its entire length streaks, are not leathery, even fibrous, (20.0) 30.0 - 40.0 (50.0) mm long and (10.0) 15.0 - 25.0 ( 30.0) mm wide. Flowers 13.0 - 16.0 (18.0) mm long. The upper teeth of the calyx 2 - 4 times longer than the tube. Sofia region, West and Central Stara Planina, Vitosha Region, West Frontier Mountains (Osogovska) Slavyanka, Pirin, Rila and Central Forest (West) Rhodopes.

Economic importance. As a young state very good fodder plant of meadows and pastures in the forest area, then stalks him coarsen.

Note. In Slavyanka and Pirin, and possibly elsewhere meet transition between subsp. balcanicum and subsp. medium types with equal of the tube of the calyx or tube barely longer than her upper teeth (SOM - 45,748) and transitions of the subsp. škorpili with subsp. medium (Gabrovo region and Turnovo, SOM - 45 811 and 45 810), resulting mainly in size of the leaves. Their attitude towards T. pseudomedium Hausskn. remained unclear due to lack of comparative material.
A quite similar to typical subspecies copy differs from the latter in the larger their heads and flowers (SOM - 45762, Rila, David).
From „Флора на НР България”, том VI, БАН, София, (1976)

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Trifolium medium, the zigzag clover,[2] is a flowering plant species in the bean family Fabaceae. It is similar in appearance to red clover, Trifolium pratense, but the leaflets are narrower and have no white markings and the narrow stipules are not bristle-pointed.[3]:150 The species is native to Europe from Britain to the Caucasus.[4]
From Wikipedia, the free encyclopedia

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Flowering Time: Blooms: V - VIII, fruitful VI - IX.

References: „Флора на НР България”, том VI, БАН, София, (1976), Wikipedia, the free encyclopedia

Distribution in Bulgaria: Grow in glades and thickets in the foothills and mountains. Black sea coast, northeastern Bulgaria, Fore, Stara Planina (Balkan mountain), Sofia region, Znepole area, Vitosha region, West Frontier Mountains, Belasitsa, Slavyanka, Pirin, Rila, Average mountain forest, Rhodopes, Thracian Lowland, Tundzha hilly plain, Strandzha, 1800 m altitude. (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.
Distribution: . Europe (except for the extreme north and south), Siberia, South West Asia (Asia Minor).

Conservation status and threats: not protected species in Bulgaria by the Biodiversity Law. - Biological Diversity Act -

Medical plant: it is not. - Medicinal Plants Act -

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