Distribution
Ukraine

Albania, Austria, Bulgaria, Slovakia, Greece, Hungary, Italy, former Yugoslavia, Romania, Estonia (introduced), C- & E-European Russia, Belarus, Ukraine, Northern Caucasus, Armenia, Georgia [Caucasus], ?Azerbaijan, Siberia (W-Siberia), Kazakhstan, Turkmenistan, China (Xinjiang), Uzbekistan, Turkey (E-Anatolia, Inner Anatolia, N-Anatolia, NE-Anatolia, S-Anatolia, SE-Anatolia), European Turkey, Iran (EC-Iran, N-Iran, Iranian Aserbaijan, W-Iran), Iraq (NW-Iraq), Syria (coastal W-Syria, W-Syrian Mountains), Afghanistan (Kabul), USA (introduced) (Montana, North Dakota)

The native distribution area of this species in Europe stretches to the South and East from Austria and the Czech Republic, including the Balkan Peninsula, Ukraine, the south-eastern part of Russia, the Caucasus, West, South-West and Central Asia to the Tian-Shan Mountains (Jalas & Suominen, 1976; Hendrych, 1993; Tzvelev, 1996; Uotila, 2011). It reflects the widest distribution among compared to other Thesium species. (Hendrych 1961).

The species is a semi-parasite: the roots of Th. ramosum tap the roots of host plants by suction cups (haustoria) and consume nutrients.
Dry meadows, sands.

GBIF.org (7th February 2018) GBIF Occurrence Download https://doi.org/10.15468/dl.b748zz

Perennial plant with several to many (up to 20, occasionally more) ascending or erect, 15–40 cm tall stems, arising from capitate rootstock. Leaves linear to linear oblong, 5–40 mm long and 1–3 mm wide. Stem ridges and leaves covered with small, about 0.1–0.2 mm long translucent papillae. Inflorescence is a raceme usually branched in the lower part. Bract usually about 3–4 times (up to 8 times) longer than nut. Bracteoles two, slightly shorter than nut or up to two times longer. Flowers white, perianth infundibular, about 2.5 mm in diameter, with narrowly triangular lobes (Fig. 1). Fruit ellipsoid, longitudinally nerved, about 3 mm long and 1.5–2 mm wide nut. Perianth persistent, 3–5 times shorter than nut. Pedicel slightly swollen. (Gudžinskas & Žalneravičius 2017)