草茨藻Najas graminea Del.
草茨藻Najas graminea Del.
9. 草茨藻（华东水生维管束植物）图版52
Najas graminea Del. Fl. Egypt. 282. t. 50. f. 3. 1813; Hook. f., Fl. Brit Ind. 6: 569. 1893; Rendle in Trans. Linn. Soc. Lond. Bot. 5: 424. 1899, et in Engl. Pflanzenr. 7 (IV 12): 18. 1901; Juz. In Kom. Fl. USSR I: 275. t. 13. f. 6. 1934;华东水生维管束植物15.图19. 1952; Ohwi, Fl. Jap. 59. 1956; de Wilde in Steen. Fl. Males. 6 (2): 169. 1962; 江苏植物志 上册131.图212. 1977; 台湾植物志5: 37. 1978; 中国水生高等植物图说215.图156. 1983.
《Flora of China》 Vol. 23 (2010)
Najas graminea Delile Descr. égypte, Hist. Nat. 2: 282. 1813.
草茨藻 cao ci zao
Stems 10-20 cm tall, 0.5-1 mm in diam. Leaves narrowly linear to linear, 1-2.5 cm × 0.4-1 mm; sheath 1.5-3 mm, deeply auriculate; auricles narrowly triangular or lanceolate, 1-2 mm, serrulate with several teeth on each side, apex acute; leaf margin minutely and densely serrulate with 30-50 inconspicuous teeth on each side, consisting of brownish spine cells only. Plants monoecious; flowers solitary, or sometimes 2 or 3 together. Male flowers usually more toward upper axils, ca. 1 mm, elliptic; spathe absent; anther 4-thecous. Female flowers 1.5-2 mm; style ca. 1 mm; stigmas 2-4-lobed. Fruit oblong, 1.5-2 × ca. 0.8 mm. Seeds ellipsoid-oblong, with ca. 30 rows of pits; areoles hexangular and irregularly polygonal toward ends, or rectangular. Fl. and fr. Jun-Sep. 2n = 12*, 24, 36*, 48, 72.
Ponds, paddy fields, usually in still or slow-moving water; below 1800 m. Anhui, Fujian, Guangdong, Guangxi, Hainan, Hebei, Henan, Hubei, Jiangsu, Liaoning, Sichuan, Taiwan, Yunnan, Zhejiang [Afghanistan, Bangladesh, India, Indonesia, Japan (including Ryukyu Islands), Kazakhstan, Korea, Malaysia, Myanmar, Nepal, New Guinea, Pakistan, Philippines, Sri Lanka, Tajikistan, Thailand, Uzbekistan, Vietnam; Africa, SW Asia, Australia, Europe; introduced in North America].
别名：ricefield waternymph;尘尾藻;细叶茨藻;麈尾藻;拂尾藻;线叶茨藻;
科名：茨藻科 Najadaceae
属名：茨藻属 Najas
9. 草茨藻（华东水生维管束植物）图版52
Najas graminea Del. Fl. Egypt. 282. t. 50. f. 3. 1813; Hook. f., Fl. Brit Ind. 6: 569. 1893; Rendle in Trans. Linn. Soc. Lond. Bot. 5: 424. 1899, et in Engl. Pflanzenr. 7 (IV 12): 18. 1901; Juz. In Kom. Fl. USSR I: 275. t. 13. f. 6. 1934;华东水生维管束植物15.图19. 1952; Ohwi, Fl. Jap. 59. 1956; de Wilde in Steen. Fl. Males. 6 (2): 169. 1962; 江苏植物志 上册131.图212. 1977; 台湾植物志5: 37. 1978; 中国水生高等植物图说215.图156. 1983.
《Flora of China》 Vol. 23 (2010)
Najas graminea Delile Descr. égypte, Hist. Nat. 2: 282. 1813.
草茨藻 cao ci zao
Stems 10-20 cm tall, 0.5-1 mm in diam. Leaves narrowly linear to linear, 1-2.5 cm × 0.4-1 mm; sheath 1.5-3 mm, deeply auriculate; auricles narrowly triangular or lanceolate, 1-2 mm, serrulate with several teeth on each side, apex acute; leaf margin minutely and densely serrulate with 30-50 inconspicuous teeth on each side, consisting of brownish spine cells only. Plants monoecious; flowers solitary, or sometimes 2 or 3 together. Male flowers usually more toward upper axils, ca. 1 mm, elliptic; spathe absent; anther 4-thecous. Female flowers 1.5-2 mm; style ca. 1 mm; stigmas 2-4-lobed. Fruit oblong, 1.5-2 × ca. 0.8 mm. Seeds ellipsoid-oblong, with ca. 30 rows of pits; areoles hexangular and irregularly polygonal toward ends, or rectangular. Fl. and fr. Jun-Sep. 2n = 12*, 24, 36*, 48, 72.
Ponds, paddy fields, usually in still or slow-moving water; below 1800 m. Anhui, Fujian, Guangdong, Guangxi, Hainan, Hebei, Henan, Hubei, Jiangsu, Liaoning, Sichuan, Taiwan, Yunnan, Zhejiang [Afghanistan, Bangladesh, India, Indonesia, Japan (including Ryukyu Islands), Kazakhstan, Korea, Malaysia, Myanmar, Nepal, New Guinea, Pakistan, Philippines, Sri Lanka, Tajikistan, Thailand, Uzbekistan, Vietnam; Africa, SW Asia, Australia, Europe; introduced in North America].