Trifolium campestre Schreb.

1796 (13). T. campestre Schreb. in Sturm, Deutschl. Fl. 1 (4) (1804) 16; Hayek, Prodr. Fl. Peains. Balc. I (1926) 847; Стоян., Сборн. БАН, 26 (1930) 34; Бобров, Фл. Сист. Высш. раст. VI (1947) 245; Coombe, FL Eur. II (1968) 166; T. procumbens L. Sp. PI. ed. 1 (1753) 772, nom. ambig — Полска детелина

Fam:   Leguminosae Juss. (Fabaceae)
Genus:   Trifolium L.
Species: Trifolium campestre Schreb.
English Name: Hop trefoil, Field clover, Low hop clover


Annuals plants. Stems numerous, single, (5.0) 10.0 - 30.0 (40.0) cm long, ascending to lying or upright, mostly more or less branched, off-standing scattered short fibrous or at least at the bottom bare. Stipule lanceolate, ciliate along the edge, at the base more or less broad rounded, bottom often more or less serrated, with a low issued stripped at the top of the stem equal to the petiole, in bottom part 2 - 3 times shorter, sparsely hairy or naked. Leaves on almost identical stems, strictly consistent, above somewhere slightly closer, off-standing fiber to almost naked. The leaflets (5,0) 8.0 - 15.0 (18.0) mm long and 4.0 - 8.0 mm wide, in the upper 1/3 - 1/2 shallow, serrated on top concave, rarely entire, with 12 - 20 well issued by each side streaks, the middle leaflet with 0.5 - 1.0 mm long stem, seated side. Inflorescence stems short-fitting fibrous, equal to in inflorescences leaves or up to 2 times longer, jutting diverted. Heads 6.0 - 12.0 (15.0) mm in diameter, spherical, numerous, in the upper parts of the stem and branches thin. Bracts form of short reddish glands. The flower stems slightly shorter, to 1/3 shorter than the tube of the calyx, fiber, straight. Flowers 20 – 40, (3.0) 4.0 - 5.0 mm long. Calyx 2.5 - 3.5 mm long, naked, membranous with 5 unclear veins; teeth uneven, equal in length above the upper lip of the calyx, or slightly shorter, the lower 1 - 2 times longer than the lower lip of the calyx and 1 - 2 times as long as the above, all nude at overblown yellowish to brown. Corolla golden or sulfur yellow, after overblown brown, 2 - 3 times longer than the calyx. Flag longer than the wings and keel, ovoid, a likeness of keel with such a scoop lamina, at the base suddenly in the saved fingernail, heavily streaked, uneven serrated side on top more or less concave. Wings with wide incorrectly elliptical lamina, tongue widely, blunt, 3 - 4 times shorter than stranded fingernail. The keel with broad elliptical sickle lamina, on top with a sharp tooth. Beans ovoid, monocotyledon, longer than the calyx, on a flat stem its length and half shorter pedicle.


var. campestre.- heads over 10.0 - 15.0 mm in diameter. Corolla golden yellow. Inflorescence stem equal to in inflorescence leaf.
f. campestre. Stems highly branched, upright. Distributed within the species.
f. pseudoprocumbens (Gmel.) Aschers. et Graebn., Syn. VI (2) (1907) 482; T. pseudoprocumbens Gmel., Fl. Bad. 3 (1808) 240. stems lying to ascending or slightly branched or simple. Widespread.
var. minus (Koch) Kož. st. n .; T. campestre f. minus (Koch) Hayek, op. c. p. 848; T. procumbens L. var .minus Koch, Syn., Ed. 3 (1857) 175 head to 10.0 mm in diameter. Corolla sulfur yellow. Inflorescence stem about 2 times longer than in inflorescence leaf. Pirin (Bansko).
„Флора на НР България”, том VI, БАН, София, (1976)

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Trifolium campestre, commonly known as hop trefoil,[1] field clover[2] and low hop clover, is a species of clover native to Europe and western Asia, growing in most areas, but specifically thriving on dry, sandy grassland habitats, as well as in fields, woodland margins, roadsides, wastelands and cultivated land. The species name campestre means "of the fields".


It is a herbaceous annual plant, growing to 10–30 cm tall, with distinctive yellow flowerheads that superficially resemble hop flowers. Each flowerhead is a cylindrical or spherical collection of 20–40 individual flowers. The flowers become brown upon aging and drying. The leaves are alternate and trifoliate, with three oblong or elliptical leaflets 4–10 mm long.
This species is very closely related to large hop trefoil (Trifolium aureum).
From Wikipedia, the free encyclopedia

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Flowering Time: Blooms: VI - VII, fruitful: VII - VIII.

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

Distribution in Bulgaria: Grow in open grassy areas with moderate humidity, rarely in light woods, sometimes as adventitious plant in the lowlands, foothills and lower mountain belt. Circulated to 1000 m altitude. (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.

Distribution: Europe (east to Crimea without extreme north), Mediterranean, Caucasus, Southwest 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 -

1. 2. 3.


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