平臥鹼蓬
平臥鹼蓬 |
中文學名:平臥鹼蓬 拉丁學名:Suaeda prostrata Pall. 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:中央種子目 科:藜科 亞 科:螺胚亞科 族:鹼蓬族 屬:鹼蓬屬 亞 屬:無脈組 |
平臥鹼蓬(拉丁學名:Suaeda prostrata Pall.),為藜科鹼蓬屬下的一年生草本植物。產於中國、俄羅斯,中亞、東歐等地。生於重鹽鹼地。 [1]
目錄
平臥鹼蓬形態特徵
一年生草本,高20-50厘米,無毛。莖平臥或斜升,基部有分枝並稍木質化,具微條棱,上部的分枝近平展並幾等長。
葉條形,半圓柱狀,灰綠色,長5-15毫米,寬1-1.5毫米,先端急尖或微鈍,基部稍收縮並稍壓扁;側枝上的葉較短,等長或稍長於花被。團傘花序2至數花,腋生;花兩性,花被綠色,稍肉質,5深裂,果時花被裂片增厚呈兜狀,基部向外延伸出不規則的翅狀或舌狀突起;花葯寬矩圓形或近圓形,長約0.2毫米,花絲稍外伸;柱頭2,黑褐色,花柱不明顯。
胞果頂基扁;果皮膜質,淡黃褐色。種子雙凸鏡形或扁卵形,直徑1.2-1.5毫米,黑色,表面具清晰的蜂窩狀點紋,稍有光澤。花果期7-10月。
Herbs annual, 20-50 cm tall, glabrous. Stem prostrate or obliquely spreading, somewhat ribbed, base branched and slightly woody; upper branches subhorizontal, equal. Leaves gray-green, linear, semiterete, slightly compressed, 0.5-1.5 cm × 1-1.5 mm, base slightly contracted, apex subobtuse or acute; leaves of lateral branches shorter than others, equaling or longer than perianth. Glomerules axillary, 2- to numerous flowered. Flowers bisexual. Perianth green, 5-parted, somewhat fleshy; segments thickened and cucullate in fruit, base extending into an irregular, winglike or tonguelike process. Filaments slightly exserted; anthers broadly oblong or subglobose, ca. 0.2 mm. Style obscure; stigmas 2, black-brown. Utricle depressed; pericarp light yellow-brown, membranous. Seed black, sublustrous, depressed ovoid or lenticular, 1.2-1.5 mm in diam., distinctly pitted. Fl. and fr. Jul-Oct.
Strongly saline-alkaline places. W Gansu, Hebei, N Jiangsu, Nei Mongol, Ningxia, N Shaanxi, Shanxi, N Xinjiang [Russia (S European part, S Siberia); C and SW Asia, SE Europe].
平臥鹼蓬生長環境
生於重鹽鹼地。