Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] 202 DISEASES OF CULTIVATED PLANTS the leaves are full-grown, under the form of brownish patches which generally follow the course of the larger veins. The leaves fall long before they are dead, owirg to the mycelium of the fungus passing into the leafstalk, and cutting off the supply of food and water. Minute spore-clusters are formed Fig. â Gnomonia veneta. 1, a diseased plane leaf, soniowliat reduced ; 2, conidia, highly mag. along the course of the veins on the under
Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] 202 DISEASES OF CULTIVATED PLANTS the leaves are full-grown, under the form of brownish patches which generally follow the course of the larger veins. The leaves fall long before they are dead, owirg to the mycelium of the fungus passing into the leafstalk, and cutting off the supply of food and water. Minute spore-clusters are formed Fig. â Gnomonia veneta. 1, a diseased plane leaf, soniowliat reduced ; 2, conidia, highly mag. along the course of the veins on the under surface of the leaf. This disease was considered to be due entirely to Gloeo- sporium tiervisequum (Sacc). Klebahn, however, has recently worked out the life-history of the fungus, and shows that the Gloeosporiian is but a conidial form oi an ascigerous fungus
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