The Orchid Doctor Articles under the Heading Oedema

Oedema Comments
OEDEMA: Blistering On cattleya leaves, small raised hard nubby features rise, especially on the backside of the leaf with a corresponding front-side depression, caused when cells take up more water than needed, then rupture and form a corky layer on the spots. A83-24; Ca84(2)-35 (Edema) 0

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