EVOLUTION IN THE FLOWERS OF PEDICULARIS
EVOLUTION IN THE FLOWERS OF PEDICULARIS
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DOI：
10.1111/j.1558-5646.1951.tb02771.x
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发表时间：
1951-06
期刊：
影响因子：
3.3
通讯作者：
Hui-lin Li
中科院分区：
文献类型：
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作者：
Hui-lin Li
马先蒿属（Pedicutlaris）是玄参科（Scrophulariaceae）的一个属，是温带开花植物中最大的属之一，大约有600-800种。本属的花显示出一系列的多样性，可能是任何其他属所无法比拟的，但作为一个整体，本属是如此彻底的自然，甚至没有尝试将其细分为亚属群。在这个密切相关的物种的巨大复合体中，极其复杂的进化模式以及其巨大的发展趋势表明，这是一个相对年轻和极其活跃的属，它发展成众多特有物种本质上是其地质存在的过程。该物种大多是多年生草本植物，半寄生在禾本科植物的根部。本属总体上是高山山地属，很少有物种延伸到海拔低于500米。有些种类存在于开花植物栖息的最高海拔地区，例如中国西部和喜马拉雅山海拔5,000米以上。大多数物种都生活在海拔2,500至4,500米的地方。
Pedicutlaris, a genus of the Scrophulariaceae, is one of the largest genera of temperate flowering plants with somewhat around 600-800 species. The flowers of this genus show a range of diversity likely unequalled by any other genus, yet as a whole the genus is so thoroughly natural that attempts to subdivide it into subgeneric groupings are not even made. The extremely intricate pattern of evolution in this great complex of closely related species together with its vastly divergent trends of development indicates that this is a relatively young and extremely active genus, and its deployment into a multitude of endemic species is essentially a process of its geologic present. The species are mostly perennial herbs and are semi-parasitic on the roots of grasses. This genus on the whole is an alpine-montane one, with very few species extending to altitudes lower than 500 meters. Some species exist at the highest altitudes inhabited by flowering plants, as, for instance, altitudes above 5,000 meters in western China and the Himalayas. The majority of the species are found at altitudes of about 2,500 to 4,500 meters.