《中国植物志》|| 旋花科 CONVOLVULACEAE ||旋花属 Convolvulus Linn. ||田旋花 Convolvulus arvensis L.

7. 田旋花 中国旋花、箭叶旋花（中国高等植物图鉴），扶田秧、扶秧苗（江苏），白花藤、面根藤（四川），三齿草藤（甘肃），小旋花（四川、甘肃），燕子草（山东），田福花（新疆）
Convolvulus arvensis Linn. Sp. Pl. 153. 1753, et ibid. ed. 2: 218. 1762; Choisy in Mem. Soc. Phys. Geneve 6: 479. 1833, et in DC. Prodr. 9: 406. 1845; C. B. Clrke in Hook. f. Fl. Brit. Ind. 4: 219. 1883; Levl. Cat. Pl. Yunnan 58. 1915-16; Liou et Ling, Fl. Ill. N. Chine 1: 15. t. 3. 1931; v. Ooststr. in Blumea 3: 283. 1939, et in Fl. Males ser. 1, 4 (4): 437. 1953; Ю. с. ГрИгоръевin Fl. URSS 19: 29. 1953; 中国高等植物图鉴3:528. 图5009. 1974.——C. chinensis Ker-Gawl. in Bot. Reg. t. 322. 1878; Kitagawa, Lineam. Fl. Manch. 366. 1939. ——C. arvensis Linn. var. sagittaefolius Turcz. in Bull. Soc. Nat. Mosc. 11: 797. 1838.——C. arvensis Linn. var. crassifolius Choisy in DC. Prodr. 9: 406. 1845.——C. arvensis Linn. var. linearifolius Choisy in DC. Prodr. 9: 407. 1845.——C. arvensis Linn. var. angustatus Ledeb. Pl. Alt. 1:224. 1829. ——C. arvensis Linn. var. sagittatus Ledeb. l. c.——C. sagittifolius (Fisch. ) Liou etLing, Fl. Ill. N. Chine 1: 17. t. 4. 1931.
多年生草本，根状茎横走，茎平卧或缠绕，有条纹及棱角，无毛或上部被疏柔毛。叶卵 状长圆形至披针形，长1.5-5厘米，宽1-3厘米，先端钝或具小短尖头，基部大多戟形，或箭形及心形，全缘或3裂，侧裂片展开，微尖，中裂片卵状椭圆形，狭三角形或披针状长圆形，微尖或近圆；叶柄较叶片短，长1-2厘米；叶脉羽状，基部掌状。花序腋生，总梗长3-8厘米，1或有时2-3至多花，花柄比花萼长得多；苞片2，线形，长约3毫米；萼片有毛，长3.5-5毫米，稍不等，2个外萼片稍短，长圆状椭圆形，钝，具短缘毛，内萼片近圆形，钝或稍凹，或多或少具小短尖头，边缘膜质；花冠宽漏斗形，长15-26毫米，白色或粉红色，或白色具粉红或红色的瓣中带，或粉红色具红色或白色的瓣中带，5浅裂；雄蕊5，稍不等长，较花冠短一半，花丝基部扩大，具小鳞毛；雌蕊较雄蕊稍长，子房有毛，2室，每室2胚珠，柱头2，线形。蒴果卵状球形，或圆锥形，无毛，长5-8毫米。种子4，卵圆形，无毛，长3-4毫米，暗褐色或黑色。
产我国吉林、黑龙江、辽宁、河北、河南、山东、山西、陕西、甘肃、宁夏、新疆、内蒙古、江苏、四川、青海、西藏等省区。生于耕地及荒坡草地上。广布两半球温带，稀在亚热带及热带地区有分布。
全草入药，调经活血，滋阴补虚。

《Flora of China》|| Convolvulaceae || Convolvulus ||田旋花 Convolvulus arvensis

7. Convolvulus arvensis Linnaeus, Sp. Pl. 1: 153. 1753.

田旋花 tian xuan hua

Convolvulus arvensis var. angustatus Ledebour; C. arvensis var. crassifolius Choisy; C. arvensis var. linearifolius Choisy; C. arvensis var. sagittatus Ledebour; C. arvensis var. sagittifolius Turczaninow; C. chinensis Ker Gawler; C. sagittifolius (Fischer) Liou & Ling.

Herbs perennial, with ± woody rhizomes. Stems prostrate or twining, to 1 m tall, glabrous or sparsely pubescent. Petiole 0.3-2 cm; leaf blade ovate-oblong to ovate, 1.5-5 X 1-4 cm, glabrous or pubescent, base hastate, sagittate, or cordate, apex obtuse, mucronulate; prominently 3-veined basally, upper parts pinnately veined. Inflorescences axillary, cymose, 1-3-flowered; peduncle 3-8 cm; bracts 2, linear, ca. 3 mm. Pedicel ca. 4 as long as calyx. Sepals unequal, 3.5-5 mm; outer 2 broadly oblong to obovate, shorter, abaxially sparsely pubescent or glabrous, margin ± ciliate, apex retuse; inner ones ovate-circular, margin membranous, apex obtuse or retuse. Corolla white or pink, broadly funnelform, 1.5-2.6 cm, midpetaline bands pubescent outside distally; limb shallowly 5-lobed. Stamens included, unequal; filaments minutely scaly basally. Disc cupular. Ovary ovoid, glabrous or sparsely pubescent. Stigmas cylindric. Capsule ovoid to subglobose, 5-8 mm, glabrous. Seeds 4 or fewer, dark brown or black, ovoid, 3-4 mm, tuberculate. Fl. Jun-Aug, fr. Jun-Sep. 2n = 24, 48, 50.

Cultivated areas, wasteland, roadsides, grassy slopes; 600-4500 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Xizang [Asia, Europe, North America, South America].