Phytophthora (26 avr. 1840 – 7 août 1846)
Description:
 Phytophthora infestans is an oomycete or water mold, a microorganism that causes the serious potato and tomato disease known as late blight or potato blight.
Late blight was a major culprit in the 1840s European, the 1845 Irish, and the 1846 Highland potato famines. 
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