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Caragana arborescens, the Siberian peashrub, [2] Siberian pea-tree, [3] or caragana, is a species of legume native to Siberia and parts of China (Heilongjiang, Xinjiang) and neighboring Mongolia and Kazakhstan. [4] It was taken to the United States by Eurasian immigrants, who used it as a food source while travelling west.
The Doyenné du Comice pear originated in France, where it was first grown at the Comice Horticole in Angers in the 1840s. [1] The varietal was a chance discovery, and a commemorative plaque in the Loire states: "In this garden was raised in 1849-50 the celebrated pear Doyenné du Comice by the gardener Dhomme and by Millet de la Turtaudiere, President of the Comice Horticole."
Root nodules apparently have evolved three times within the Fabaceae but are rare outside that family. The propensity of these plants to develop root nodules seems to relate to their root structure. In particular, a tendency to develop lateral roots in response to abscisic acid may enable the later evolution of root nodules. [21]
The immature peas (and in snow peas and snap peas the tender pod as well) are used as a vegetable, fresh, frozen or canned; varieties of the species typically called field peas are grown to produce dry peas like the split pea shelled from a matured pod.
Aerenchyma in stem cross section of a typical wetland plant. Aerenchyma or aeriferous parenchyma [1] or lacunae, is a modification of the parenchyma to form a spongy tissue that creates spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. [2]
It is a small tree, that grows in hedgerows or at the edge of woods. The Plymouth pear is considered to be either a subspecies of Pyrus pyraster (European wild pear) or a distinct species. [ citation needed ] It is one of the rarest trees in the UK and it is protected under Schedule 8 of the Wildlife and Countryside Act and seeds have been ...
Plant anatomy or phytotomy is the general term for the study of the internal structure of plants.Originally, it included plant morphology, the description of the physical form and external structure of plants, but since the mid-20th century, plant anatomy has been considered a separate field referring only to internal plant structure.
Applying auxin to the surface of a tree stump allowed decapitated shoots to continue secondary growth. The absence of auxin hormones will have a detrimental effect on a plant. It has been shown that mutants without auxin will exhibit increased spacing between the interfascicular cambiums and reduced growth of the vascular bundles. The mutant ...