Should pay attention to what the problem of seed plant specimens were collected? Trees, shrubs, tall grasses or special, can only take part of the plant body. It must be noted specimens collected should be representative of the general situation of the plant. If possible, it is best to take a photograph of the plant-wide shape, to supplement the specimen. Aquatic herbaceous plant specimens from the water after easily wrapped into a ball, not easy to separate. As hornwort, water buttercup, bladderwort and so on. If this happens, use cardboard to prop out from the water, together with the pressure of the specimen cardboard folder. Thus, you can maintain the integrity of the morphological features. Some plants, annual new leaf and branches of old branches of different leaf or leaves are hairy newborn or dorsal with white powder, and old leaves no hair, such as Populus tomentosa leaves and old leaves. Therefore, young leaves and old leaves should adopt. Some of the first leaves of flowering plants collected plant specimens, post-harvest flowers, the leaves should be collected specimens with their leaves and the results on the same lines, such as hickory, because of the color and stripped the bark of woody plants in many cases is identification of plant species basis, therefore, should be attached to a piece of bark stripping specimens. Some species such as birch genus. Vein specimens basic steps and make the vein specimens, requirements and considerations. Etching - cooking method (1) the removal of a number of veins clear, tough leaves, such as mulberry, laurel leaves. (2) Weigh 2.5 g of sodium carbonate, sodium hydroxide, 3.5 grams (or 3 g) was placed in a beaker, 100 ml of water injection, the fire to boil. (3) into the leaves of plant specimens pictures, so they are all soaked in solution. Continue to heat 6 to 8 minutes, occasionally mixed with a glass rod gently moving, so that all the leaves separate heat evenly. Corrosion herbarium leaf produced by drugs, soft on the part of the vein is easily removed to leave. (4) Remove the cooked leaves with tweezers, placed in a glass of water Shengyou Qing. (5) is removed from the clear water rinse leaves, tiled in a Petri dish, in tap water in carefully with a soft brush to gently wipe the soft part of the blade, revealing clear veins, then attached to the glass dry. (6) to take advantage of the veins have not yet dry, painted with watercolor paints with a brush (also can be immersed in the color ink staining). After dry, put the book flatten. Then on the petiole tied a colored ribbon, it may lead to the appearance of a bookmark. Herbarium pictures, voyage teaching (certified), Shangrao plant specimens provided by Xinxiang City Teaching Equipment Co. voyage. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) (www.yuanhang369.com) is an industry leader in Henan Xinxiang, specimen model years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. On the voyage instructional leadership with the staff warmly welcome all inquiries negotiations to create a better future teaching voyage. You can also access (www.yuanhang369.com/supply_details_41249600.html), for more information about the company.