. Fig. 108. â CoUard black mold as seen from upper side of the leaf. Original. They enlarge sometimes to 2-3 cm. in diameter. The tissue dries, becomes brittle, and often falls away, leaving ragged holes. The general appearance of the spot as seen from above is pale green; as seen from the lower surface, shown in Fig. 108, it is densely black, strongly contrasting with

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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910