Swarm-Spores and Zygospores, 1896.

"Swarm-Spores and Zygospores. Forms of Chlorophyll Bodies" high quality chromolithograph printed in Leipzig by the Bibliographisches Institut and published in The Natural History of Plants, 1896. Supplied with key to the plants illustrated. Size 13 x 21 cms including title, plus margins. Ref G9693