角果藻Zannichellia palustris Linn.
角果藻Zannichellia palustris Linn.
1. 角果藻（中国种子植物名称）角茨藻（植物学大辞典）图版41
Zannichellia palustris Linn., Sp. Pl. 969. 1753; Asch. u. Graebn. in Engl. Pflanzenr. 31 (IV 11): 153, f. 34. 1907; Juz. in Kom. Fl. USSR I: 264. 1934; 华东水生维管束植物14. pl. 15. 1952;中国高等植物图鉴5: 12.图6854. 1976;秦岭植物志1 (1): 46.图43. 1976;台湾植物志5: 34. 1978; 内蒙古植物志7: 23. 1983; 中国水生高等植物图说207.图149. 1983.
形态特征：细弱的沉水草本。根状茎横走，有须根。茎纤细而脆，易折断，长约20厘米，少分枝。叶细线形，扁平， 3～4枚轮生，长2～5厘米，先端尖锐，基部有鞘状的膜质托叶，叶脉1。花微小，腋生，单性，几无梗，雌雄花各1朵同生于一膜质的苞内； 雄花具1雄蕊，花丝细，花药长约1毫米，雌花具2～6心皮．花柱长3～3．5毫米，柱头盾状。小坚果长圆形，扁平，微弯，长2～4毫米，背部脊上有膜质的波状齿，先端具细长的喙，果柄长2～4毫米，或无柄而数个簇生于总梗上。
生长环境：生长在淡水池沼及海滨和内陆咸水中。
花期果期：花果期6～9月(江苏)。
用 途：
《Flora of China》 Vol. 23 (2010)
Zannichellia palustris Linnaeus Sp. Pl. 2: 969. 1753.
角果藻 jiao guo zao
Pelta palustris (Linnaeus) Dulac; Zannichellia palustris subsp. pedicellata (Wahlenberg & Rosén) J. D. Hooker; Z. palustris var. pedicellata Wahlenberg & Rosén; Z. pedicellata (Wahlenberg & Rosén) E. M. Fries.
Stems 3-20(-50) cm, 0.3-0.5 mm in diam. Leaves 2-10 cm × 0.3-0.5 mm, apex acuminate; sheaths usually free from leaf base, stipuliform, membranous, evanescent. Anthers 0.6-1 mm; filaments ca. 3 mm. Carpels usually 3 or 4. Fruitlet often curved, reniform to semilunate, 2-2.5 mm, abaxially remotely cristate-dentate, long beaked. Fl. and fr. spring to autumn. 2n = 12, 24, 28, 32, 36.
Fresh or brackish water. Anhui, Hebei, Heilongjiang, Hubei, Jiangsu, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Taiwan, Xinjiang, Xizang, Zhejiang [cosmopolitan].
The specimens with stigma obliquely peltate, fruitlets reniform, and pedicel 4-6 mm are described as Zannichellia palustris var. pedicellata. But specimens from China are variable in the shape of the stigma, characters of fruit, and degree of stipitation. Because of this, the plants are here regarded as forming a single variable species.The specimens with stigma obliquely peltate, fruitlets reniform, and pedicel 4-6 mm are described as Zannichellia palustris var. pedicellata. But specimens from China are variable in the shape of the stigma, characters of fruit, and degree of stipitation. Because of this, the plants are here regarded as forming a single variable species.
别名：horned pondweed;丝葛藤;角果菜;奥苏马格;角茨藻;
科名：角果藻科 Zannichelliaceae
属名：角果藻属 Zannichellia
1. 角果藻（中国种子植物名称）角茨藻（植物学大辞典）图版41
Zannichellia palustris Linn., Sp. Pl. 969. 1753; Asch. u. Graebn. in Engl. Pflanzenr. 31 (IV 11): 153, f. 34. 1907; Juz. in Kom. Fl. USSR I: 264. 1934; 华东水生维管束植物14. pl. 15. 1952;中国高等植物图鉴5: 12.图6854. 1976;秦岭植物志1 (1): 46.图43. 1976;台湾植物志5: 34. 1978; 内蒙古植物志7: 23. 1983; 中国水生高等植物图说207.图149. 1983.
形态特征：细弱的沉水草本。根状茎横走，有须根。茎纤细而脆，易折断，长约20厘米，少分枝。叶细线形，扁平， 3～4枚轮生，长2～5厘米，先端尖锐，基部有鞘状的膜质托叶，叶脉1。花微小，腋生，单性，几无梗，雌雄花各1朵同生于一膜质的苞内； 雄花具1雄蕊，花丝细，花药长约1毫米，雌花具2～6心皮．花柱长3～3．5毫米，柱头盾状。小坚果长圆形，扁平，微弯，长2～4毫米，背部脊上有膜质的波状齿，先端具细长的喙，果柄长2～4毫米，或无柄而数个簇生于总梗上。
生长环境：生长在淡水池沼及海滨和内陆咸水中。
花期果期：花果期6～9月(江苏)。
用 途：
《Flora of China》 Vol. 23 (2010)
Zannichellia palustris Linnaeus Sp. Pl. 2: 969. 1753.
角果藻 jiao guo zao
Pelta palustris (Linnaeus) Dulac; Zannichellia palustris subsp. pedicellata (Wahlenberg & Rosén) J. D. Hooker; Z. palustris var. pedicellata Wahlenberg & Rosén; Z. pedicellata (Wahlenberg & Rosén) E. M. Fries.
Stems 3-20(-50) cm, 0.3-0.5 mm in diam. Leaves 2-10 cm × 0.3-0.5 mm, apex acuminate; sheaths usually free from leaf base, stipuliform, membranous, evanescent. Anthers 0.6-1 mm; filaments ca. 3 mm. Carpels usually 3 or 4. Fruitlet often curved, reniform to semilunate, 2-2.5 mm, abaxially remotely cristate-dentate, long beaked. Fl. and fr. spring to autumn. 2n = 12, 24, 28, 32, 36.
Fresh or brackish water. Anhui, Hebei, Heilongjiang, Hubei, Jiangsu, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Taiwan, Xinjiang, Xizang, Zhejiang [cosmopolitan].
The specimens with stigma obliquely peltate, fruitlets reniform, and pedicel 4-6 mm are described as Zannichellia palustris var. pedicellata. But specimens from China are variable in the shape of the stigma, characters of fruit, and degree of stipitation. Because of this, the plants are here regarded as forming a single variable species.The specimens with stigma obliquely peltate, fruitlets reniform, and pedicel 4-6 mm are described as Zannichellia palustris var. pedicellata. But specimens from China are variable in the shape of the stigma, characters of fruit, and degree of stipitation. Because of this, the plants are here regarded as forming a single variable species.