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The genus Solms-Laubachia of Cruciferae was established by Muschler in 1912 on
the basis of the Chinese species Solms-Laubachia pulcherrima of Yunnan Province.
Since then, nine species, two varieties and two forms have been recorded. They are
almost all endemic in China except one species—Solms-Laubachia retropilosa Botsch.
which was discovered in Sikkim.
We described in this paper thirteen species, three varieties and one form, of which,
we suppose, three species, one variety and one combination have never been reported
before. Most species grow in the mountainous regions of Szechuan, Yunnan, Tibet,Ching-hai and Sinkiang in China. 相似文献
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The present paper deals with the pollen morphology of 10 species and 1 variety of Loxostemon in China. The pollen grains were all examined under light microscope.
The pollen grains of Loxostemon are subspheroidal, spheroidal or prolate, 18--33×11.8-28 μ in size, 3-colpate, colpi 15-21 μ long and 1-2 μ wide. The exine is 1.5-3 μ thick with two indistinct or distinct layers.
All the pollen grains are generally reticulate under light microscope. They are distinctly or obscurely and finely reticulate. L. axillus and L. repens are generally similar in gross morphology, but the pollen grains of these two species are different. The pollen grains of L. axillus are regularly polygonally reticulate, colpi are acute-ended and the exine is about 3 μ thick, whereas those of L.repens are irregularly polygonally reticulate, colpi are enlarged at both ends and the exine is about 2.8 μ thick. L. incanus and L. stenolobus appear to have similar gross morphology, but the pollen grains of the former have exines with two distinct layers and a densely and finely reticulate ornamentation and those of the latter have exines with two indistinct layers and a flexuosely reticulate ornamentation. 相似文献
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本文报道了三种芸苔属植物的外部形态、种子解剖、花粉形态和染色体数目。研究结
果表明：新疆毛芥；黑芥；鸡冠菜；均是三个独立的种。其中1新种、1新等级。 相似文献
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中国芸苔属植物花粉形态的研究 总被引：1，自引：0，他引：1
本文对我国芸苔属Brassica Linn．36种(含变种、变型)植物的花粉形态首次作了系统报道。用光
学显微镜进行观察，发现该属花粉有四种沟孔类型。即二、三、四沟；三沟；三、四沟，三、四孔沟。多数种类与以往的报道不完全相同。在扫描电镜下，纹饰为三种类型。拟脑纹-网状；网纹状；穴-网纹状。依据
植物花粉形态和其它特征，对本属植物演变趋势和一些种，变种的分类处理进行了讨论。 相似文献
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