axillary, on 5-10 mm long stems. Sepals 5-7 mm long, elliptical, narrow-scarious along margin. Petals 7-10 mm long, oblong-obovate or oval, narrowing into long cuneate claw, orange-colored at base, white in upper portion. Capsules 16-24 mm long, 6-10 (12) mm broad, oblong-oval or oval, pentagonal; wings 2-3 mm broad. In solonchaks and solonetzic steppes, sometimes on rocky steppe slopes. West. Sib.: AL—Go (Chuya river valley: facing Chegan river estuary—class, hab. and others in Chuya steppe).— Mid. Asia, West. China, Mongolia. Map 21. 5. Z. pterocarpum subsp. tuvinicum Peschkova, subsp. nova. A subspecie typica foliis plerumque trijugis (rarius bijugis), foliolis oblongo-linearibus, petiolis apice processu aculeoli-formi molli subindistincto albido recto vel subincurvato distinguitur. Typus. Tuva, dist. Tes-Chemensis, declive australe jugi Tannu-Ola Orientalis, 1200 m.s.m., vallis FI. Irbitei, silva salicoso-populosa variiherbosa, 3 VIII 1972, V. Chanminczun, L. Kupalova, L. Eremenko (NS, isotypus LE). Unlike type subspecies, leaves usually with 3 (rarely 2) pairs of oblong-lanceolate leaflets. Leaf petioles with faint whitish, erect or slightly curved soft spiniform shoot at tip. In arid solonetzic meadows, river valleys, nannophyte solonchak semideserts. Cen. Sib.: TU (Irbitei river valley in Tes-Khemsk region—class, hab.—Ak-Chyra settlement, bank of Amdaigyn-Khol’ lake).—Endemic. 2. Tribulus L. 1. T. terrestris L. 1753, Sp. Pl.: 387. Annual with slender weak root and (3)10-60 cm tall stems diffuse along ground and branched right from base; together with leaf petioles and pedicels, covered with long distant and short semiappressed hairs bent at tip. Leaves (1) 2-6 cm long, (0.5) 1-3 cm broad, more often opposite, paripinnate, with small lanceolate-deltoid stipules; leaflets 4-7 pairs, 3-13 mm long, 34 1-5 mm broad, oblong or oblong-elliptical, asymmetric, obtuse, on very short petiolules, more or less compactly (specially young) covered beneath with long slender appressed hairs, glabrescent with age, subglabrous on upper surface. Flowers single, axillary, on short (4-10 mm) stems. Sepals 3-5 mm long, lanceolate, hairy outside. Petals narrow-obovate, about 10 mm long,
In arid sandy and rocky steppes, on coastal sand, along river valleys in poplar groves, on debris cones at foot of slopes, sometimes as weed on roadsides and around houses. W est. S ib.: AL-Go (U st’-Inya, Yaloman, and Kerkechu settlem ents, and between Inya and Iodro villages in Ongudaisk region). Cen. Sib.: TU. E ast. Sib.: BU-Yuzh (along valleys of Selenga and Khilok rivers south of N ovoselenginsk).— Europe, Caucasus, M editerranean, Asia; as weed in Africa and America. Described from South. Europe. Map 23.