. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. Fig. 101a. Spot Disease of Orchard Grass {Scolectotrichum graminis). Cross- section of leaf, general fruiting layer of fungus with conidiophores and conidia. A, spores germinating. After General appearance of fungus oa leaf of Orchard grass. After Trelease. Polydesmus Mont. Rape Fungus Sterile hyphae repent; fertile erect, simple or branched septate colorless conidia, interstitial filiform, concatenate, fusiform or clavate
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. Fig. 101a. Spot Disease of Orchard Grass {Scolectotrichum graminis). Cross- section of leaf, general fruiting layer of fungus with conidiophores and conidia. A, spores germinating. After General appearance of fungus oa leaf of Orchard grass. After Trelease. Polydesmus Mont. Rape Fungus Sterile hyphae repent; fertile erect, simple or branched septate colorless conidia, interstitial filiform, concatenate, fusiform or clavate; many septate and opaque. Polydesmus exitiosus Kiihn. Rape Fungus Forming minute, punctate, elongated dark brown spots, conidia elongated or somewhat clavate, narrowed upwardly, 18-12 septate; the septa but slightly con- stricted, olive-brown in color. The conidia are 120-140 by 14-16 /*; conidiophores short, straight or slightly irregular, septate, making their way through the stomata. This fungus is widely distributed on rape and cabbage and has been referred to as Alternaria brassicae. It is, however, thought to be a distinct fungus. Poisonous properties. In Europe this fungus has long been associated with mycotic-stomatitis of cattle, but mycotic-stomatitis may be produced as indi- cated elsewhere, by other molds and fungi. This disease is characterized by in- flammation and ulceration of the mucous membranes of the mouth. Saliva- tion is a prominent symptom; the feet become swollen and sore. Dr. Mohler says: "Superficial erosions of the skin, particularly of the muzzle, and of the teats and udders of cows, may also be present, with some elevation of temperature and ; The disease is not serious and in many cases recovery occurs. But where treatment is not resorted to the disease may prove fatal, death occurring in from 6-8 days. Dr. Mohler states that in serious outbreaks it is about Please note that these images are extracted from scanned page
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