小白藜
| 小白藜 |
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中文学名:小白藜 拉丁学名:Chenopodium iljinii 二名法:Chenopodium iljinii Golosk. 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:石竹亚纲 目:石竹目 科:藜科 族:藜族 属:苋科藜属 种:小白藜 |
小白藜，是藜科一年生草本，高10-30厘米，全株有粉。茎通常平卧或斜升，多分枝，有时自基部分枝而无主茎。 [1]
目录
小白藜形态特征
叶片卵形至卵状三角形，通常长0.5-1.5厘米，宽0.4-1.2厘米，两面均有密粉，呈灰绿 小白藜 色，先端急尖或微钝，基部宽楔形，全缘或三浅裂，侧裂片在近基部；叶柄细瘦，长0.4-1厘米。
花簇于枝端及叶腋的小枝上集成短穗状花序；花被裂片5，较少为4，倒卵状条形至矩圆形，背面有密粉，无隆脊;花药宽椭圆形，花丝稍短于花被;柱头2，丝状，花柱不明显。
胞果顶基扁。种子双凸镜形，有时为扁卵形，横生，较少为斜生,直径0.8-1.2毫米，黑色，有光泽，表面近平滑或微有沟纹。
花果期8-10月。
Herbs annual, 10-30 cm tall, farinose throughout. Stem usually prostrate or obliquely spreading, much branched, sometimes branched only from base. Petiole slender, 0.4-1 cm; leaf blade gray-green, ovate to ovate-triangular, usually 0.5-1.5 × 0.4-1.2 cm, farinose on both surfaces, base broadly cuneate, margin entire or 3-lobed, apex subobtuse or acute; lateral lobes attached near base of leaf blade, apex obtuse. Glomerules forming short spikes on axillary branchlets. Perianth segments (4 or)5, obovate-linear to oblong, not keeled, abaxially densely farinose. Filaments slightly shorter than perianth; anthers broadly oblong. Style obscure; stigmas 2, filiform. Utricle depressed. Seed horizontal, rarely oblique, black, sublustrous, lenticular, sometimes depressed ovoid, 0.8-1.2 mm in diam., subsmooth or slightly pitted. Fl. and fr. Aug-Oct.
Valley terraces, slopes, drier grasslands; 2000-4000 m. W Gansu, Ningxia, Qinghai (Qilian Shan), NW Sichuan, Xinjiang [Kazakhstan].
The closely related, C Asian Chenopodium pamiricum Iljin (in Shishkin, Fl. URSS 6: 873. 1936) may be expected to occur in the mountains of W China. Probably some Chinese records of C. iljinii refer to that species.
小白藜生长环境
生于海拔2000-4000米之间的河谷阶地、山坡及较干旱的草地。