Vasculum

The box was carried horizontally on a strap so that plant specimens lie flat and lined with moistened cloth.

[1] Traditionally, British and American vascula were somewhat flat and valise-like with a single room, while continental examples were more cylindrical and often longer, sometimes with two separate compartments.

With rise of botany as a scientific field the mid 18th century, the vasculum became an indispensable part of the botanist's equipment.

With post-war emphasis on systematics rather than alpha taxonomy and new species often collected in far-away places, field botany and the use of vascula went into decline.

[4] The Vasculum was "An Illustrated Quarterly dealing primarily with the Natural History of Northumberland and Durham and the tracts immediately adjacent," from 1915 to 2015.