The category is to write the name of the specimen, such as leaf order specimen, inflorescence specimen or phylogenetic specimen. Name refers to the name of the plant. If it is a leaf order specimen, there may be several different plant names on the table paper.

The collection place is the place where the plants are collected, and the date is the time when the plants are collected. The collector wrote down the name of the plant specimen collector.

Specimens used for plant taxonomy are usually marked with collection records in the upper left corner and name labels in the lower right corner. The naming label shall indicate the preservation number, family, Latin scientific name, appraiser and identification date. Just stick the four corners or the upper and lower sides firmly when labeling, and you can remove them and replace them if necessary.

Extended data:

Plant specimen preservation method:

1, green preservation method

Plants are green because there is chlorophyll in plant cells. Chlorophyll is a complex organic compound, and the molecular structure of magnesium ion is easily destroyed by alcohol and formalin.

Replacing magnesium ion in chlorophyll with copper ion can form a new "chlorophyll molecule" centered on copper ion, which can be stably preserved in alcohol, formalin and other preservation solutions, so that green can be preserved for a long time.

2, the red preservation method

Plant specimens with green in red, such as red pepper and watermelon with green calyx and branches and leaves (the red placenta of pulp should be cut and fixed); Red-green plant specimens, such as sugarcane, can be fixed with 5% copper sulfate solution 10~ 15 days. When the plant specimen changes from red to brown, take it out and wash it, and then store it with 1%~2% sulfurous acid.

3, yellow preservation method

Yellow-green or yellow plant specimens, such as pumpkin, potato, melon, pear, etc. , fixed with 1%~5% copper sulfate 1~5 days, taken out and washed, and then stored with 2% sulfurous acid, 1%~2% alcohol and a little glycerin.

Baidu encyclopedia-preserved leaf specimens

Baidu Encyclopedia-Plant Specimen