Plant collecting is the acquisition of plant specimens for the purposes of research, cultivation, or as a hobby. Plant specimens may be kept alive, but are more commonly dried and pressed to preserve the quality of the specimen. Plant collecting is an ancient practice with records of a Chinese botanist collecting roses over 5000 years ago.
Solanum lycopersicum var. lycopersicum: the oldest surviving tomato fruit and leaves. Page from the En Tibi Herbarium, 1558. Naturalis Biodiversity Center.
A book with a weighted object on top of it can be used to press plants
Flamingo Flower
A herbarium is a collection of preserved plant specimens and associated data used for scientific study.
Herbarium book which dates from 1633. Made by the Flemish Bernardus Wynhouts.
Herbarium specimens ("exsiccata") of various Nepenthes at the Museum National d'Histoire Naturelle in Paris, France
Herbarium book with Japanese plants, Siebold collection Leiden, 1825
Preparing a plant for mounting