目前为止，中国西南野生生物种质资源库共保藏该物种: 种子20份; DNA材料17份; DNA5份;

• 科:蓼科    Polygonaceae
• 属:沙拐枣属   Calligonum
• 种:沙拐枣   Calligonum mongolicum

10. Calligonum mongolicum Turczaninow, Bull. Soc. Imp. Naturalistes Moscou. 5: 204. 1832. 沙拐枣 sha guai zao Calligonum dielsianum K. S. Hao; C. potaninii Losinskaja.Shrubs 25-150 cm tall. Old branches spreading, flexuous, grayish white or light yellow-gray; herbaceous branchlets of current year gray-green, jointed; joints 0.6-3 cm. Leaves linear, 2-4 mm; ocrea united to leaf. Pedicel 1-2 mm, slender, jointed below middle. Flowers 2 or 3, at leaf axil, white or light red. Tepals spreading in fruit, ovate, ca. 2 mm. Fruit broadly ellipsoid, 0.8-1.2 cm × 7-11 mm. Achenes linear, narrowly ellipsoid, or broadly ellipsoid, not to very coiled; ribs prominent or not, each with 2 or 3 rows of bristles; bristles dense, ca. as long as or slightly longer than width of achenes, slender, breakable, not or slightly enlarged at base, 2- or 3-branched from middle. Fl. May-Jul, fr. Jun-Aug. 2n = 18*, (27*).Mobile, semimobile, or stable sand dunes, deserts; 500-1800 m. Gansu, Nei Mongol, Xinjiang [Mongolia].【引自：Flora of China】

灌木，高25-150厘米。老枝灰白色或淡黄灰色，开展，拐曲；当年生幼枝草质，灰绿色，有关节，节间长0.6-3厘米。叶线形，长2-4毫米。花白色或淡红色，通常2-3朵，簇生叶腋；花梗细弱，长1-2毫米，下部有关节；花被片卵圆形，长约2毫米，果时水平伸展。果实（包括刺）宽椭圆形，通常长8-12毫米，宽7-11毫米；瘦果不扭转、微扭转或极扭转，条形、窄椭圆形至宽椭圆形；果肋突起或突起不明显，沟槽稍宽成狭窄，每肋有刺2-3行；刺等长或长于瘦果之宽，细弱，毛发状，质脆，易折断，较密或较稀疏，基部不扩大或稍扩大，中部2-3次2-3分叉。花期5-7月，果期6-8月，在新疆东部，8月出现第二次花果。 【引自：中国植物志】