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Plate 3. — The plate which accompanied Frank's epochal paper. All of the figures 

 except 4 and 7 are to illustrate mycorrhizae of Carpinits Befitlus, the other two being 

 of Fagns sylvatica. The mycotrophic enlargement of the rootlets, and mantle of 

 hyphae are well shown; and the sections neatly indicate ectotrophic structure. (Ber. 

 deut. hot. Gesell., vol. 3, pi. 10). 



