微齿眼子菜Potamogeton maackianus A. Bennett
微齿眼子菜Potamogeton maackianus A. Bennett
6. 微齿眼子菜（东北植物检索表）黄丝草（湖北）图版17
Potamogeton maackianus A. Benn. in Journ. Bot. 42: 74. 1904; Asch. et Graebn. in Engl. Pflanzenr. 31(IV 11): 107. 1907; Hagstrom in Kungl. Svenska Vetenskapsakad. Handl. 55 (5): 56. 1916; Miyabe et Kudo in Journ. Fac. Agr. 26 (2): 196. 1931; Kuzm. et Skv. in Philip. Journ. Sci. 74(4): 397. pl. 1. f. 1-13. 1941; 东北植物检索表450. 图版166. 图4. 1959; 中国高等植物图鉴5: 8. 图6845. 1976; 江苏植物志 上册129. 图205. 1977. ——P. serrulatus Rgl. et Maack. in Rgl. Tent. Fl. Ussur 153. 1861; Kom. in Act. Hort. Petrop. 20: 226 (Fl. Mansh.). 1901.
多年生沉水草本，无根茎。茎细长，直径0.5-1毫米，具分枝，近基部常匍匐，于节处生出多数纤长的须根，节间长2-10厘米。叶条形，无柄，长2-6厘米，宽2-4毫米，先端钝圆，基部与托叶贴生成短的叶鞘，叶缘具微细的疏锯齿；叶脉3-7条，平行，顶端连接，中脉显著，侧脉较细弱，次级脉不明显；叶鞘长0.3-0.6厘米，抱茎，顶端具一长3-5毫米的膜质小舌片。穗状花序顶生，具花2-3轮；花序梗通常不膨大，与茎近等粗，长1-4厘米；花小，被片4，淡绿色，雌蕊4枚，稀少于4枚，离生。果实倒卵形，长约4毫米，顶端具长约0.5毫米的喙，背部3脊，中脊狭翅状，侧脊稍钝。花果期6-9月。
产东北、华北、华东、华中以及西南各地。生于湖泊、池塘等静水水体，水体多呈微酸性。原苏联、朝鲜、日本也有分布。
《Flora of China》 Vol. 23 (2010)
Potamogeton maackianus A. Bennett J. Bot. 42: 74. 1904.
微齿眼子菜 wei chi yan zi cai
Potamogeton serrulatus Regel & Maack.
Plants perennial, submerged in fresh water. Rhizomes present, terete. Stems creeping at base or even to lower part, slender, terete to slightly compressed, ca. 1 mm diam., richly branched; turions absent. Stipules 3-6 mm, adnate to and slightly fused with leaf base, convolute, membranous; leaves sessile, broadly linear, 2-6 cm × 2-4 mm, 3-7-veined, lateral veins faint, with narrow rows of lacunae bordering midvein, base rounded, margin serrulate, apex obtuse to rounded. Spikes usually few flowered, with only 2 or 3 whorls of contiguous or shortly distant opposite flowers; peduncles 1-4 cm. Carpels usually 4. Fruit obovoid, 3.5-4 mm, abaxial keel distinct, with a short beak ca. 0.5 mm at tip. Fl. and fr. Jun-Sep.
Lakes, ponds, rarely in rivers, usually in slightly acid water. Anhui, Hebei, Heilongjiang, Hubei, Jiangsu, Jilin, Liaoning, Shaanxi, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Indonesia (Sumatra), Japan, Korea, Philippines, Russia (Siberia)].
别名：禾叶眼子菜;线叶菹;黄丝草;丝草;竹叶草;篦齿眼子菜;
科名：眼子菜科 Potamogetonaceae
属名：眼子菜属 Potamogeton
6. 微齿眼子菜（东北植物检索表）黄丝草（湖北）图版17
Potamogeton maackianus A. Benn. in Journ. Bot. 42: 74. 1904; Asch. et Graebn. in Engl. Pflanzenr. 31(IV 11): 107. 1907; Hagstrom in Kungl. Svenska Vetenskapsakad. Handl. 55 (5): 56. 1916; Miyabe et Kudo in Journ. Fac. Agr. 26 (2): 196. 1931; Kuzm. et Skv. in Philip. Journ. Sci. 74(4): 397. pl. 1. f. 1-13. 1941; 东北植物检索表450. 图版166. 图4. 1959; 中国高等植物图鉴5: 8. 图6845. 1976; 江苏植物志 上册129. 图205. 1977. ——P. serrulatus Rgl. et Maack. in Rgl. Tent. Fl. Ussur 153. 1861; Kom. in Act. Hort. Petrop. 20: 226 (Fl. Mansh.). 1901.
多年生沉水草本，无根茎。茎细长，直径0.5-1毫米，具分枝，近基部常匍匐，于节处生出多数纤长的须根，节间长2-10厘米。叶条形，无柄，长2-6厘米，宽2-4毫米，先端钝圆，基部与托叶贴生成短的叶鞘，叶缘具微细的疏锯齿；叶脉3-7条，平行，顶端连接，中脉显著，侧脉较细弱，次级脉不明显；叶鞘长0.3-0.6厘米，抱茎，顶端具一长3-5毫米的膜质小舌片。穗状花序顶生，具花2-3轮；花序梗通常不膨大，与茎近等粗，长1-4厘米；花小，被片4，淡绿色，雌蕊4枚，稀少于4枚，离生。果实倒卵形，长约4毫米，顶端具长约0.5毫米的喙，背部3脊，中脊狭翅状，侧脊稍钝。花果期6-9月。
产东北、华北、华东、华中以及西南各地。生于湖泊、池塘等静水水体，水体多呈微酸性。原苏联、朝鲜、日本也有分布。
《Flora of China》 Vol. 23 (2010)
Potamogeton maackianus A. Bennett J. Bot. 42: 74. 1904.
微齿眼子菜 wei chi yan zi cai
Potamogeton serrulatus Regel & Maack.
Plants perennial, submerged in fresh water. Rhizomes present, terete. Stems creeping at base or even to lower part, slender, terete to slightly compressed, ca. 1 mm diam., richly branched; turions absent. Stipules 3-6 mm, adnate to and slightly fused with leaf base, convolute, membranous; leaves sessile, broadly linear, 2-6 cm × 2-4 mm, 3-7-veined, lateral veins faint, with narrow rows of lacunae bordering midvein, base rounded, margin serrulate, apex obtuse to rounded. Spikes usually few flowered, with only 2 or 3 whorls of contiguous or shortly distant opposite flowers; peduncles 1-4 cm. Carpels usually 4. Fruit obovoid, 3.5-4 mm, abaxial keel distinct, with a short beak ca. 0.5 mm at tip. Fl. and fr. Jun-Sep.
Lakes, ponds, rarely in rivers, usually in slightly acid water. Anhui, Hebei, Heilongjiang, Hubei, Jiangsu, Jilin, Liaoning, Shaanxi, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Indonesia (Sumatra), Japan, Korea, Philippines, Russia (Siberia)].