Accurate inference in phylogeography requires appropriate sampling strategies.Complex questions demand a large sample si......

研究Cistus parviflorus叶的化学成分.采用溶剂提取和色谱分离技术进行化学成分分离,根据质谱和波谱数据鉴定化合物结构.从Cistus ......

The pollen morphology of 11 species (including two subspecies and two varieties) belonging to two genera (Helianthemum a......

半日花是半日花科的一种半灌木或灌木,稀为一年生或多年生草本孑遗植物。全世界约有8属200种,多分布于地中海沿岸。我国内蒙古、新......