A vasculum is a container used by botanists to keep field samples viable by maintaining a cool, humid environment. Vascula are typically flattened tin cylinders, carried horizontally on a strap so that specimens lie flat and lined with moistened cloth.
- "L'herbier, un outil pour le botaniste" [The herbarium, a tool for the botanist] (in French). La Garance voyageuse. "with image"
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