Elymus repens (root)
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{{Microscopy | source=United States Dispensatory (1918) | {{Microscopy | source=United States Dispensatory (1918) | ||
− | | description= | + | | description=Under the microscope, transverse sections of Triticum show a single layer of strongly lignified epidermal cells; a hypodermis of from 3 to 6 rows of more or less polygonal cells with strongly lignified walls; a cortex of from 10 to 16 rows of thin-walled parenchyma cells, occasionally with nearly spherical starch grains about 0.005 mm. in diameter, or with irregular masses of a more or less soluble carbohydrate; among the parenchyma cells and near the hypodermis occur small, widely separated fibro-vascular bundles, each with a closed sheath of sclerenchymatous fibers; an endodermis, the lateral and inner walls of the cells moderately thickened, strongly lignified and somewhat porous; several layers of sclerenchymatous fibers immediately inside the endodermal ring, in which are imbedded an interrupted circle of collateral fibro-vascular bundles having large tracheas; adjoining these are usually 8 to 10 rows of parenchyma cells with a few fibro-vascular bundles and a pith in which the parenchyma cells are more or less broken or absent. The powder is light yellowish; consisting of irregular, lignified fragments; numerous fragments showing tracheae with annular or spiral thickenings or marked with simple pores and associated with long, narrow, rather thin-walled, strongly lignified sclerenchymatous fibers; fragments of epidermis made up of cells rectangular in outline, the longer walls considerably thickened, strongly lignified and marked with numerous transverse pores; ends of epidermal cells usually separated from each other by a very narrow cell with thin walls and few pores; numerous fragments of parenchyma rectangular in outline and with thin, porous walls. |
− | + | ||
− | Under the microscope, transverse sections of Triticum show a single layer of strongly lignified | + | |
− | epidermal cells; a hypodermis of from 3 to 6 rows of more or less | + | |
− | polygonal cells with strongly lignified walls; a cortex of from 10 to 16 | + | |
− | rows of thin-walled parenchyma cells, occasionally with nearly spherical | + | |
− | starch grains about 0.005 mm. in diameter, or with irregular masses of a | + | |
− | more or less soluble carbohydrate; among the parenchyma cells and | + | |
− | near the hypodermis occur small, widely separated fibro-vascular | + | |
− | bundles, each with a closed sheath of sclerenchymatous fibers; an | + | |
− | endodermis, the lateral and inner walls of the cells moderately | + | |
− | thickened, strongly lignified and somewhat porous; several layers of | + | |
− | sclerenchymatous fibers immediately inside the endodermal ring, in | + | |
− | which are imbedded an interrupted circle of collateral fibro-vascular | + | |
− | bundles having large tracheas; adjoining these are usually 8 to 10 rows | + | |
− | of parenchyma cells with a few fibro-vascular bundles and a pith in | + | |
− | which the parenchyma cells are more or less broken or absent. The | + | |
− | powder is light yellowish; consisting of irregular, lignified fragments; | + | |
− | numerous fragments showing tracheae with annular or spiral | + | |
− | thickenings or marked with simple pores and associated with long, | + | |
− | narrow, rather thin-walled, strongly lignified sclerenchymatous fibers; | + | |
− | fragments of epidermis made up of cells rectangular in outline, the | + | |
− | longer walls considerably thickened, strongly lignified and marked with | + | |
− | numerous transverse pores; ends of epidermal cells usually separated | + | |
− | from each other by a very narrow cell with thin walls and few pores; | + | |
− | numerous fragments of parenchyma rectangular in outline and with | + | |
− | thin, porous walls. | + | |
}} | }} | ||
Revision as of 20:09, 17 March 2014
Contents |
Nomenclature
Elymus repens (L.) Gould Poaceae
Syn. Agropyron repens (L.) P. Beauv.; Elytrigia repens (L.) Desv. ex B.D. Jackson; Triticum repens L.
Standardized common name (English): couch grass
Botanical Voucher Specimen
Organoleptic Characteristics
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Macroscopic Characteristics
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Microscopic Characteristics
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High Performance Thin Layer Chromatographic Identification
Supplementary Information
Sources
- ↑ United States Dispensatory (1918)
- ↑ United States Dispensatory (1918)
- ↑ United States Dispensatory (1918)
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com