Identifier: americanfloristw51amer (find matches)
Title: The American florist : a weekly journal for the trade
Year: 1885 (1880s)
Authors: American Florists Company
Subjects: Floriculture Florists
Publisher: Chicago : American Florist Company
Contributing Library: UMass Amherst Libraries
Digitizing Sponsor: Boston Library Consortium Member Libraries

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e. Sometimes thevery small young buds are attacked,turn black and dry up. This is oftenspoken of as bud blast. Larger budsare later affected, turn brown and failto open; the stalk for several inchesbelow the bud is usually killed, turnsbrown and frequently shows alter-nating stripes or bands of dark andlight brown color. When broken open,such buds present a dark brown rottenmass. This is the bud rot stage ofthe disease. In a wet season as highas 80 or 90 per cent of the buds maythus be rotted before they can open.Opened flowers are also often affected,becoming discolored and rotten. Therotted buds and flowers soon becomecovered with the brown felt of thespore stalks and spores of the path-ogen. The leaves are usually the last toshow symptoms of this disease, in theform of large irregular spots whichspread rapidly usually from the apexor sinuses of the leaves. The tissue Iskilled, becoming brown and dry so thatit crumples readily. The underside ofthe spot is soon covered with the spore
Text Appearing After Image:
DISEASES OF THE PEONY. Fig. 2—Leaf Showing Mosaic Disease Mottlings. stalks of the fungus. The blighting ofthe leaves gives the plants a most un-tidy appearance. The leaf blight formis very common on peony plants every-where during the latter part of thesummer, becoming very bad duringrainy weather. In dry seasons the dis-ease is but little in evidence. Cause. The cause of this diseasehas long been attributed to the fungus,Botrytis, found constantly associatedwith the lesions on stem, bud and leaf.There are many described species ofBotrytis, some of which are very com-mon on greenhouse and garden crops.The Botrytis forms found on peonyhave been referred usually to Botrytisvulgaris or Botrytis cinerea, and Bo-trytis paeoniae, the last described by aHollander as the cause of the diseasein that country. My own studies in-dicate that there are at least two dis-tinct species of Botrytis attacking andcausing identical symptoms in thepeonies both in this country and inEurope. The species w

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