灰绿叉毛蓬查看源代码讨论查看历史
| 灰绿叉毛蓬 |
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中文学名:灰绿叉毛蓬 拉丁学名:Petrosimonia 界:植物界 门:蕨类植物门Pteridophyta 纲:蕨纲Filicopsida 目:真蕨目Eufilicales 科:藜科Chenopodiaceae |
灰绿叉毛蓬，植株高10-20厘米，有毛至近无毛，蓝灰绿色。茎直立，多分枝； 枝斜升，通常茎下部的1-3对为对生，其余为互生。 [1]
灰绿叉毛蓬形态特征
植株高10-20厘米，有毛至近无毛，蓝灰绿色。茎直立，多分枝; 枝斜升，通常茎下部的1-3对为对生，其余为互生。
叶条形，半圆柱状或近于圆柱状，除茎下部少数为对生外其余为互生，通常长1-4厘米，宽1-1.5毫米，大多稍向外弯曲，先端渐尖，基部稍扩展；枝上部的叶（苞）较短，长0.5-1厘米，显著外弯或外折。
小苞片舟状，等长或稍长于花被，先端短渐尖并外弯; 花被片2,透膜质，椭圆或狭卵形，长约2.5毫米，先端急尖或微钝，背面近先端处及边缘微有毛，果时稍变硬；雄蕊5，花药（包括附属物）长2-2.5毫米，下部约1/3分离; 花药附属物长约0.4毫米，先端通常具3个浅裂齿，侧缘彼此粘合使花药聚成伞形；柱头与花柱近等长。花果期7-9月。
Petrosimonia crassifolia (Pallas) Bunge var. glaucescens Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, Ser. 7, 4(11): 56. 1862; Polycnemum glaucum Pallas.
Plants blue-gray, 10-20 cm tall, hairy to subglabrous. Stem erect, much branched; lower branches suberect, usually lower 1-3 pairs opposite; other branches obliquely spreading. Leaves opposite on lower branches, alternate on upper branches, linear, mostly recurved, semiterete or subterete, usually 1-4 cm × 1-1.5 mm, base slightly expanded, apex acuminate. Bracts distinctly recurved or reflexed, 5-10 mm, shorter than leaves, all longer than subtended flower. Bractlets navicular, equaling or slightly longer than perianth, apex shortly acuminate, recurved. Perianth segments 2, elliptic or narrowly ovate, ca. 2.5 mm, membranous, somewhat hardened in fruit, abaxially slightly hairy at margin and near apex, apex subobtuse or acute. Stamens 5; anthers free in proximal ca. 1/3, 2-2.5 mm including appendage; appendage ca. 0.4 mm, apex usually 3-lobed, appendages attached by lateral margins making joined anthers umbrella-shaped. Stigmas subequaling style. Fl. and fr. Jul-Sep.
Dunes, saline-alkaline deserts. N Xinjiang [Kazakhstan, Russia (SE European part); SW Asia (Caucasus)].
灰绿叉毛蓬生长环境
主要生长于沙丘、盐碱土荒漠中。