vasculum

[vas-kyuh-luh m] /ˈvæs kyə ləm/
noun, plural vascula
[vas-kyuh-luh] /ˈvæs kyə lə/ (Show IPA),
vasculums.
1.
a kind of case or box used by botanists for carrying specimens as they are collected.
Origin
1825-35; < Latin vāsculum little vessel. See vas, -cule1
British Dictionary definitions for vasculum

vasculum

/ˈvæskjʊləm/
noun (pl) -la (-lə), -lums
1.
a metal box used by botanists in the field for carrying botanical specimens
Word Origin
C19: from Latin: little vessel, from vas