Identifier: pecanrosetteitsh1038rand (find matches)
Title: Pecan rosette : its histology, cytology, and relation to other chlorotic diseases
Year: 1922 (1920s)
Authors: Rand, Frederick Vernon, 1883-1961
Subjects: Pecan rosette Pecan
Publisher: Washington, D.C. : U.S. Dept. of Agriculture
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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Text Appearing Before Image:
A-HaentCc Baltimore Different Stages of Pecan Rosette. (ILLUSTRATION BY J. F. BREWER.) Fig. 1.—Enlargement of one of the yellow spots on a pecan leaf in the secondary stage of rosette showingthe distortion of vein islets und their radial expansion around a focal center. X about 30. Fig. 2.—Pecan leaflet in the secondary stage of rosette, showing the distribution of yellow spots between the sideveins and the criukling and roughening of the leaf surface. Natural size. Fig. 3.—Pecan leafletshowing the red-brown stage of rosette which often follows either the primary or the secondary stage.Natural size. Fig 4.—Pecan leaves in the primary stage of rosette, showing no external signs of thedisease except the yellow mottling between the side veins. Natural size. < Bui. 1038. U. S. Dept. of Agriculture. Plate II. )
Text Appearing After Image:
Normal Pecan Leaf, Frotscher Variety. Collected on August 25, 1919, at Thomasville, Ga. Photographed by transmitted light to showthe texture and opacity of the leaf. X §. Bui. 1038, U. S. Dept. of Agriculture. Plate III,

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