Figure 2 in Herbarium specimens reveal the exchange network of British and Irish botanists, 1856-1932

Figure 2 An example of the network of botanical exchanges. Square nodes represent women. Red nodes are members of the Watson Botanical Exchange Club. Blue nodes are members of the Botanical Exchange Club. Purple nodes are members of both clubs. The node's area is proportion to the number of specimens collected by that collector during the period. The width of the link is proportional to the number of links between those two nodes. (A) The whole network. (B) Detail of the centre of the network. The network was laid out using the Harel–Koren Fast Multiscale algorithm.