轮叶节节菜查看源代码讨论查看历史
轮叶节节菜 |
中文学名:轮叶节节菜 界:植物界 目:桃金娘目 属:节节菜属 种:轮叶节节菜 |
轮叶节节菜,别名:墨西哥水松叶,拉丁文名:Rotala mexicana Cham. et Schlechtend.千屈菜科、节节菜属一年生草本,无毛,带红色,基部分枝,常葡旬,上部直立。窄披针形或阔线形,顶端截形,有凸尖,基部狭。花单生叶腋,无梗,略带红色;小苞片线形,薄膜质,约与花萼等长,萼筒于结实时半球形,三角形,无附属体;无花瓣;雄蕊2或3;子房卵形或近球形。产于江苏、浙江、河南及陕西南部。图片取自中国植物图库。[1]
轮叶节节菜形态特征
一年生草本,无毛,带红色,茎高3-10厘米,基部分枝,常葡旬,上部直立。
轮叶节节菜 叶3-5 片轮生,窄披针形或阔线形,长6-10毫米,宽1.5-2毫米,顶端截形,有凸尖,基部狭。
花单生叶腋,无梗,长0.6-1毫米,略带红色;小苞片线形,薄膜质,约与花萼等长,萼筒于结实时半球形,花裂片4-5,三角形,无附属体;无花瓣;雄蕊2或3;子房卵形或近球形。
蒴果球形,长约1毫米,2-3瓣裂。花期9-11月。[2]
Rotala mexicana Cham. et Schlechtend. in hinnaea 5: 567. 1830; Walp., Rep. 2: 101. 1843; Koehne in Engl., Bot. Jahrb. 1: 150. 1880 et in Engl.,Pflanzenr. 17(IV-216): 29-1903.——R. verticillaris auct. non Linn.: Hiern in Oliv., Fl. Trop. Afr. 2: 467. 1871. ——Ammanninia Baill., lust. Pl.; Madag., Atl. t. 36 3. 1895.
Herbs, annual, aquatic, amphibious, or terrestrial. Stem 3-10 cm, creeping, floating, or erect and ascending, branching. Leaves 3-5(-8)-whorled; aerial leaves narrowly lanceolate to broadly linear [or ovate], 5-10 × 1.5-2 mm, base narrow, apex truncate and often 2-cleft; submerged leaves linear, to 15 × 0.5 mm. Flowers solitary, sessile, axillary; bracteoles linear, ca. as long as floral tube. Floral tube (3 or)4(or 5)-merous, campanulate, translucent, ca. 0.5 mm; sepals (3 or)4(or 5); epicalyx absent. Petals absent. Stamens (1 or)2 or 3(or 4), included. Ovary subglobose; style included, much shorter than ovary. Capsule ca. 1 mm in diam., (2 or)3-valved. Seeds ca. 0.3 mm. Fl. Sep-Dec.
轮叶节节菜生长环境
常生长于浅水湿地中。
轮叶节节菜分布范围
产于江苏、浙江、河南及陕西南部;分布于泰国、越南、菲律宾、日本、马达加斯加等地。