Press the plants using white paper and newsprint between blotter that are separated by ventilation boards.
Label the sheet enclosing the specimen so it corresponds with the information in the field notebook.
The ventilation boards are simply corrugated cardboard sheets, cut to the size of the press, that facilitate drying by allowing air movement through the press.
Blotters should be changed daily, heat or fans can also accelerate drying.
Once dry, place and affix the specimen on herbarium paper using plastic adhesive or acid-free tape.
Some sources recommend fumigation of the dried, pressed specimens so they are not attacked by fungus or insects.
A container larger than the press will expose many specimens to the fumigant as they are sealed within the container overnight.
Place as complete a notation as possible in the lower corner of the mounting paper