光叶眼子菜Potamogeton illinoensis
中文名（Chinese Name）：光叶眼子菜
学名（Scientific Name）：Potamogeton illinoensis Morong
英文名（English Common Name）：Illinois pondweed
别名（Chinese Common Name）：
异名（Synonym）：Potamogeton sinicus Migo Buccaferrea lucida Bubani Potamogeton caudatus Seidl ex Opiz Potamogeton coriaceus (Nolte ex Mert. & W.D.J.Koch) Fryer Potamogeton corniculatus Schur Potamogeton cornutus J.Presl & C.Presl Potamogeton dentatus Hagstr. Potamogeton lindenbergii Lehm. ex Graebn. Potamogeton gramineus subsp. zizii (Mert. & W.D.J.Koch) K.Richt. Potamogeton lucens f. longifolius (J.Gay ex Poir.) Cham. & Schltdl. Potamogeton lucens subsp. brasiliensis A.Benn. Potamogeton lucens subsp. macrophyllus (Wolfg.) Nyman Potamogeton lucens subsp. sinicus (Migo) H.Hara Potamogeton lucens subsp. zizii (Mert. & W.D.J.Koch) Nyman Potamogeton lucens var. acuminatus (Schumach.) Fr. Potamogeton lucens var. coriaceus Nolte ex Mert. & W.D.J.Koch Potamogeton lucens var. fluitans Coss. & Germ. Potamogeton lucens var. longifolius (J.Gay ex Poir.) Crép. Potamogeton lucens var. teganumensis Makino Potamogeton lucidus Gueldenst. Potamogeton macrophyllus Wolfg. Potamogeton zizii f. pulcherrimus Hagstr. Potamogeton zizii var. gracilis A.Benn. Potamogeton zizii var. porrectifolius A.Benn. Potamogeton proteus Cham. & Schltdl. Potamogeton teganumensis (Makino) Makino Potamogeton volhynicus Besser ex Roem. & Schult. Spirillus lucens (L.) Nieuwl.
科属（Family & Genus）：眼子菜科（Potamogetonaceae）眼子菜属
形态特征（Description）：多年生沉水草本，具根茎。茎圆柱形，直径约2毫米，上部多分枝，节间较短，下部节间伸长，可达20余厘米。叶长椭圆形、卵状椭圆形至披针状椭圆形，无柄或具短柄，有时柄长可达2厘米；叶片长2-18厘米，宽0.8-3.5厘米，质薄，先端尖锐，常具0.5-2厘米长的芒状尖头，基部楔形，边缘浅波状，疏生细微锯齿；叶脉5-9条，中脉粗大而显著，侧脉细弱，与中脉平行，顶端连接，次级叶脉细弱，但清晰可见；托叶大而显著，绿色，通常不为膜质，与叶片离生，长1-5厘米，先端钝圆，常宿存。穗状花序顶生，具花多轮，密集；花序梗明显膨大呈棒状，较茎粗，长3-20厘米；花小，被片4，绿色；雌蕊4枚，离生。果实卵形，长约3毫米，背部3脊，中脊稍锐，侧脊不明显。花果期6-10月。
分布（Distribution）：产东北、华北、华东、西北各省区及云南，生于湖泊、沟塘等静水水体。北半球广布种。
引自中国植物志英文版：FOC Vol. 23 Page 109, 112
Potamogeton lucens Linnaeus, Sp. Pl. 1: 126. 1753.
光叶眼子菜 guang ye yan zi cai | Potamogetonaceae | Potamogeton
Potamogeton gaudichaudii Chamisso & Schlechtendal; P. sinicus Migo.
Plants perennial, submerged in fresh water. Rhizome slender to robust. Stems terete, elongated, ca. 2 mm in diam., richly or sparsely branched. Stipules axillary, large, conspicuous, convolute, 2-8(-11) cm, herbaceous, free from leaf base; leaves subsessile to shortly petiolate; petiole 2-15 mm; leaf blade elliptic or ovate-elliptic to lanceolate-elliptic, 2-18 × 0.8-5 cm, 9-11-veined, midvein thickened and conspicuous, without rows of lacunae bordering midvein, base cuneate, margin often undulate, minutely denticulate, apex mucronate or cuspidate. Spikes densely flowered, with many whorls of somewhat opposite flowers; peduncles 3-20 cm, thickened upward. Carpels 4. Fruit ovoid, 3.2-4.5 mm, abaxial keel distinct; beak short. Fl. and fr. Jun-Oct. 2n = 52.
Lakes, ponds, channels. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jiangxi, Jilin, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Xinjiang, Xizang, Yunnan [Afghanistan, India, Kazakhstan, Kyrgyzstan, Myanmar, Nepal, Pakistan, Philippines, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe].
（责任编辑：徐晔春）
学名（Scientific Name）：Potamogeton illinoensis Morong
英文名（English Common Name）：Illinois pondweed
别名（Chinese Common Name）：
异名（Synonym）：Potamogeton sinicus Migo Buccaferrea lucida Bubani Potamogeton caudatus Seidl ex Opiz Potamogeton coriaceus (Nolte ex Mert. & W.D.J.Koch) Fryer Potamogeton corniculatus Schur Potamogeton cornutus J.Presl & C.Presl Potamogeton dentatus Hagstr. Potamogeton lindenbergii Lehm. ex Graebn. Potamogeton gramineus subsp. zizii (Mert. & W.D.J.Koch) K.Richt. Potamogeton lucens f. longifolius (J.Gay ex Poir.) Cham. & Schltdl. Potamogeton lucens subsp. brasiliensis A.Benn. Potamogeton lucens subsp. macrophyllus (Wolfg.) Nyman Potamogeton lucens subsp. sinicus (Migo) H.Hara Potamogeton lucens subsp. zizii (Mert. & W.D.J.Koch) Nyman Potamogeton lucens var. acuminatus (Schumach.) Fr. Potamogeton lucens var. coriaceus Nolte ex Mert. & W.D.J.Koch Potamogeton lucens var. fluitans Coss. & Germ. Potamogeton lucens var. longifolius (J.Gay ex Poir.) Crép. Potamogeton lucens var. teganumensis Makino Potamogeton lucidus Gueldenst. Potamogeton macrophyllus Wolfg. Potamogeton zizii f. pulcherrimus Hagstr. Potamogeton zizii var. gracilis A.Benn. Potamogeton zizii var. porrectifolius A.Benn. Potamogeton proteus Cham. & Schltdl. Potamogeton teganumensis (Makino) Makino Potamogeton volhynicus Besser ex Roem. & Schult. Spirillus lucens (L.) Nieuwl.
科属（Family & Genus）：眼子菜科（Potamogetonaceae）眼子菜属
形态特征（Description）：多年生沉水草本，具根茎。茎圆柱形，直径约2毫米，上部多分枝，节间较短，下部节间伸长，可达20余厘米。叶长椭圆形、卵状椭圆形至披针状椭圆形，无柄或具短柄，有时柄长可达2厘米；叶片长2-18厘米，宽0.8-3.5厘米，质薄，先端尖锐，常具0.5-2厘米长的芒状尖头，基部楔形，边缘浅波状，疏生细微锯齿；叶脉5-9条，中脉粗大而显著，侧脉细弱，与中脉平行，顶端连接，次级叶脉细弱，但清晰可见；托叶大而显著，绿色，通常不为膜质，与叶片离生，长1-5厘米，先端钝圆，常宿存。穗状花序顶生，具花多轮，密集；花序梗明显膨大呈棒状，较茎粗，长3-20厘米；花小，被片4，绿色；雌蕊4枚，离生。果实卵形，长约3毫米，背部3脊，中脊稍锐，侧脊不明显。花果期6-10月。
分布（Distribution）：产东北、华北、华东、西北各省区及云南，生于湖泊、沟塘等静水水体。北半球广布种。
引自中国植物志英文版：FOC Vol. 23 Page 109, 112
Potamogeton lucens Linnaeus, Sp. Pl. 1: 126. 1753.
光叶眼子菜 guang ye yan zi cai | Potamogetonaceae | Potamogeton
Potamogeton gaudichaudii Chamisso & Schlechtendal; P. sinicus Migo.
Plants perennial, submerged in fresh water. Rhizome slender to robust. Stems terete, elongated, ca. 2 mm in diam., richly or sparsely branched. Stipules axillary, large, conspicuous, convolute, 2-8(-11) cm, herbaceous, free from leaf base; leaves subsessile to shortly petiolate; petiole 2-15 mm; leaf blade elliptic or ovate-elliptic to lanceolate-elliptic, 2-18 × 0.8-5 cm, 9-11-veined, midvein thickened and conspicuous, without rows of lacunae bordering midvein, base cuneate, margin often undulate, minutely denticulate, apex mucronate or cuspidate. Spikes densely flowered, with many whorls of somewhat opposite flowers; peduncles 3-20 cm, thickened upward. Carpels 4. Fruit ovoid, 3.2-4.5 mm, abaxial keel distinct; beak short. Fl. and fr. Jun-Oct. 2n = 52.
Lakes, ponds, channels. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jiangxi, Jilin, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Xinjiang, Xizang, Yunnan [Afghanistan, India, Kazakhstan, Kyrgyzstan, Myanmar, Nepal, Pakistan, Philippines, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe].
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