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Fic. 4.—SPERMOGONIA OF ZCIDIUM BERBERIDIS. 
| a, Two spermogo' a n_the upper surface of a ge ati ws af ; ib, Ble of which the mouth of 
as spermogon 's formed ; Sip neruals uch e ia Miciitca-epiaces will 
a (?)a adbedoe to o them. 
From an electrotype supplied by “ The Gardeners’ Chronicle.” 
