两蕊甜茅Glyceria lithuanica (Gorski) Gorski
两蕊甜茅Glyceria lithuanica (Gorski) Gorski
2．两蕊甜茅（拟）图版39：1-5
Glyceria lithuanica (Gorski) Gorski in Icon. Bot. Char. Cyper. Gram. Lith. 20. 1849; Lidm. in Bot. Jahrb. 44: 45. 1909; Kom. , Fl. URSS 2: 453. 1934; Tzvel. in Fed. Poac. URSS 541. 1976; Ohwi. , Fl. Jap. 144. 1978; Holub. in Fl. Europ. 5: 180. 1980. Poa lithuanica Gorski in Eichw. Naturhist. Skizze 117. 1830. ——Glyceria spectabilis r. Trin. in Mem. Acad. Sci. Petersb. ser. 6, 1: 365. 1831. ——Glyceria remota(Forsell. )Fries in Nov. Fl. Suec. , Mant. 2: 5. 1839, quoad pl. ——Glyceria aquatica. r. debilior Trin. ex Fr. Schmidt in Mem. Acad. Sci. Petersb. ser. 7, 12, 2: 201. 1868.——Glyceria orientalis Kom. in Fedde. Repert. Nov. Sp. 13: 162. 1914. ——Glyceria debilior(Trin. ex Fr. Schmidt)Kudo in Journ. Fac. Agr. Hokkaido Univ. 11, 2: 74. 1922, p. p.; 内蒙古植物志7: 58, 图版23.图1-8. 1983.
多年生，根状匍匐茎，疏丛。秆直立或基部横卧，高50-150厘米，径3-5毫米，光滑，具6-8节。叶鞘闭合近鞘口，微粗糙，下部者长于或上部者短于节间；叶舌膜质，长2-3毫米，顶端圆形，常呈齿牙状；叶片柔软质薄，扁平，长达30厘米，宽4-9毫米，两面均粗糙。圆锥花序大，疏松开展，长15-30厘米，每节具2-4分枝；穗轴粗壮，分枝纤细，粗糙，长达8厘米，伸展，有时下垂；小穗长圆形，常带紫色，含3-6小花，长5-10毫米；小穗轴节间长约0.6毫米，光滑；颖膜质，卵形至长卵形，顶端钝，具1脉，第一颖长1.2-1.5毫米，第二颖长1.8-2.5毫米；外稃草质，长圆状披针形，顶端钝或稍尖，膜质，具明显5-7脉，脉上粗糙，第一外稃长3-4毫米；内稃等长或稍长于外稃，脊上粗糙，不具狭翼；雄蕊2，花药长0.5-0.8毫米。花期6-8月。染色体2n＝20（Tateoka 1953）。
产吉林、辽宁、内蒙古。生于海拔600-1800米的林下、林缘或溪流边。分布于欧洲中部和东北部、中亚地区至日本。模式标本采自立陶宛。
《Flora of China》 Vol. 22 (2006)
Glyceria lithuanica (Gorski) Gorski
两蕊甜茅 liang rui tian mao
Poa lithuanica Gorski in Eichwald, Naturihist. Skizze 117. 1830; Glyceria aquatica (Linnaeus) J. Presl & C. Presl subsp. debilior (Trinius ex Fr. Schmidt) T. Koyama; G. aquatica var. debilior Trinius ex Fr. Schmidt; G. debilior (Trinius ex Fr. Schmidt) Kudo; G. orientalis Komarov.
Perennial, rhizomatous. Culms soft, 60–150 cm tall, 3–5 mm in diam. Leaf sheaths not prominently keeled, lower sheaths scabrid; leaf blades flat, soft, thin, up to 30 cm × 4–9 mm, scabrid, apex acute; ligule 2–3 mm. Panicle ovate in outline, 15–30 cm, exserted, spikelets many; branches 2–4 per node, spreading, often flexuous, sometimes nodding, filiform, scabrid. Spikelets elliptic to ovate-oblong, 5–8 mm, florets 3–6, bright green or purple tinged; rachilla densely scabrid; glumes ovate, membranous, 1-veined, lower glume 1.2–1.8 mm, upper glume 1.7–2.5 mm, apex subobtuse; lemmas lanceolate-oblong, 2.5–4 mm, thinly herbaceous, often minutely granular or scaberulous, 7-veined, veins scabrid, apex membranous, obtuse; palea as long as or slightly longer than lemma, keels wingless, scaberulous, apex emarginate. Stamens 2, anthers 0.5–0.8 mm. Fl. Jun–Aug. 2n = 20.
Swampy forests, forest margins, streamsides; 600–1800 m. Jilin, Liaoning [Japan, Korea, Mongolia, Russia; SW Asia (Caucasus), C and N Europe].
This is a generally more slender species than Glyceria leptolepis, the other species in China with only 2 anthers. The basal culm internodes are not hard and canelike as in G. leptolepis, but flatten on pressing.
别名：细弱甜茅;
科名：禾本科 Gramineae
属名：甜茅属 Glyceria
2．两蕊甜茅（拟）图版39：1-5
Glyceria lithuanica (Gorski) Gorski in Icon. Bot. Char. Cyper. Gram. Lith. 20. 1849; Lidm. in Bot. Jahrb. 44: 45. 1909; Kom. , Fl. URSS 2: 453. 1934; Tzvel. in Fed. Poac. URSS 541. 1976; Ohwi. , Fl. Jap. 144. 1978; Holub. in Fl. Europ. 5: 180. 1980. Poa lithuanica Gorski in Eichw. Naturhist. Skizze 117. 1830. ——Glyceria spectabilis r. Trin. in Mem. Acad. Sci. Petersb. ser. 6, 1: 365. 1831. ——Glyceria remota(Forsell. )Fries in Nov. Fl. Suec. , Mant. 2: 5. 1839, quoad pl. ——Glyceria aquatica. r. debilior Trin. ex Fr. Schmidt in Mem. Acad. Sci. Petersb. ser. 7, 12, 2: 201. 1868.——Glyceria orientalis Kom. in Fedde. Repert. Nov. Sp. 13: 162. 1914. ——Glyceria debilior(Trin. ex Fr. Schmidt)Kudo in Journ. Fac. Agr. Hokkaido Univ. 11, 2: 74. 1922, p. p.; 内蒙古植物志7: 58, 图版23.图1-8. 1983.
多年生，根状匍匐茎，疏丛。秆直立或基部横卧，高50-150厘米，径3-5毫米，光滑，具6-8节。叶鞘闭合近鞘口，微粗糙，下部者长于或上部者短于节间；叶舌膜质，长2-3毫米，顶端圆形，常呈齿牙状；叶片柔软质薄，扁平，长达30厘米，宽4-9毫米，两面均粗糙。圆锥花序大，疏松开展，长15-30厘米，每节具2-4分枝；穗轴粗壮，分枝纤细，粗糙，长达8厘米，伸展，有时下垂；小穗长圆形，常带紫色，含3-6小花，长5-10毫米；小穗轴节间长约0.6毫米，光滑；颖膜质，卵形至长卵形，顶端钝，具1脉，第一颖长1.2-1.5毫米，第二颖长1.8-2.5毫米；外稃草质，长圆状披针形，顶端钝或稍尖，膜质，具明显5-7脉，脉上粗糙，第一外稃长3-4毫米；内稃等长或稍长于外稃，脊上粗糙，不具狭翼；雄蕊2，花药长0.5-0.8毫米。花期6-8月。染色体2n＝20（Tateoka 1953）。
产吉林、辽宁、内蒙古。生于海拔600-1800米的林下、林缘或溪流边。分布于欧洲中部和东北部、中亚地区至日本。模式标本采自立陶宛。
《Flora of China》 Vol. 22 (2006)
Glyceria lithuanica (Gorski) Gorski
两蕊甜茅 liang rui tian mao
Poa lithuanica Gorski in Eichwald, Naturihist. Skizze 117. 1830; Glyceria aquatica (Linnaeus) J. Presl & C. Presl subsp. debilior (Trinius ex Fr. Schmidt) T. Koyama; G. aquatica var. debilior Trinius ex Fr. Schmidt; G. debilior (Trinius ex Fr. Schmidt) Kudo; G. orientalis Komarov.
Perennial, rhizomatous. Culms soft, 60–150 cm tall, 3–5 mm in diam. Leaf sheaths not prominently keeled, lower sheaths scabrid; leaf blades flat, soft, thin, up to 30 cm × 4–9 mm, scabrid, apex acute; ligule 2–3 mm. Panicle ovate in outline, 15–30 cm, exserted, spikelets many; branches 2–4 per node, spreading, often flexuous, sometimes nodding, filiform, scabrid. Spikelets elliptic to ovate-oblong, 5–8 mm, florets 3–6, bright green or purple tinged; rachilla densely scabrid; glumes ovate, membranous, 1-veined, lower glume 1.2–1.8 mm, upper glume 1.7–2.5 mm, apex subobtuse; lemmas lanceolate-oblong, 2.5–4 mm, thinly herbaceous, often minutely granular or scaberulous, 7-veined, veins scabrid, apex membranous, obtuse; palea as long as or slightly longer than lemma, keels wingless, scaberulous, apex emarginate. Stamens 2, anthers 0.5–0.8 mm. Fl. Jun–Aug. 2n = 20.
Swampy forests, forest margins, streamsides; 600–1800 m. Jilin, Liaoning [Japan, Korea, Mongolia, Russia; SW Asia (Caucasus), C and N Europe].
This is a generally more slender species than Glyceria leptolepis, the other species in China with only 2 anthers. The basal culm internodes are not hard and canelike as in G. leptolepis, but flatten on pressing.