6. Cuscuta monogyna Vahl, Sym. Bot. 2: 32. 1791. Choisy in DC., Prodr. 9:450. 1845; Yuncker, l.c. 256. 1932; in Rech. f. l.c. 5. 1964; Stewart, l.c. 579. 1972; Tutin et al., Fl. Europ. 3:77. 1972; Shishkii, Fl URSS (English translation), 19: 68. 1974; Plitm. in. Davis, Fl. Turk. 6:236.1978.
M.T.M. RAJPUT & S.S. TAHIR
Stem coarse, brown, usually not interlaced, making a few spirals around the host stem. Leaves oblong-elliptical, fleshy, papillate, obtuse, 3-5 x 1.5-2.5 mm. Flowers in cymes, 4-6 mm long, pedicel 1.5-8.0 mm long; bracts leaf-like. Calyx lobes 2-3 x 1.5-2.5 mm, fleshy margin slightly serious, with 1-2 folds in the middle, papillate, overlapping each other, dark brown, when dry, 1.5-2.0 mm long. Calyx lobes 5, oblong, oblong-elliptical, spotted, light brown, obtuse, granulate, 1-1.7 x 0.5-1.0 mm; tube 1-3 mm long; scales short scarious, fringed. Stamens 5, filaments 1-2 mm long; anther oblong, basifixed, attached below the sinuses, 0.5-0.7 x c. 0.2 mm. Ovary globular to conical, fleshy, not depressed, 1.5-2.0 mm x 2-2.5 mm; style mostly obsolete, rarely 1, c. 0.2 mm long, stigmas 2, dark brown, c. 02 mm long and wide; Ovules 4, reniform, 1-1.5 x 0.5 mm. Capsule 6-7 x 5-6 mm, hard, cartilaginous, bell-shaped, not depressed, without intrastylar opening, circumscissile with a definite line of cleavage and leaving the dissepiment with the calyx. Seeds 4, usually one remains immature, dark-brown to black, mostly non-glossy, bell-shaped, triangular, with depression, ± papillate, 2.5-3.0 x 2-2.2 mm.
Holotype: [Armenia] ‘Quscuta orientalis, viticulis crassissimis, convolvuli fructu’, Tournefort (C-Vahl); Isotype (P-Tourn. 6380).
Distribution: Throughout Europe and Central Asia to Sungaria, Afghanistan and Persia, Pakistan (N.W.F. Province, Baluchistan).
Host: On legumes and Berberis.
This species can be separated from all the other species of Cuscuta by its capsule, which is hard, cartilaginous, bell-shaped, 5-6 x 6-7 mm.