. Fio. 297.—a, Leader-shoot of Spruce, partially killed and defoliated, b, Pycnidia emerging from the rind and the leaf-scars (x o). c, Formation of oonidia inside a pycnidium (x 240). rf, Spores germinating in water. ., Spores germinating in nutritive gelatine. (After R. Hartig.) 1 Cavara ( Pflauzenkrankheilen, in., p. 23) regards this and S. tritici with its varieties, as forms of a single species; also Eriksson {Om Nagra sjukdomar d odlade Vdxter, 1890). -Atkinson, " Carnation Diseases," at American Carnation Society, 1893.

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