The diseases of the sweet The diseases of the sweet pea .. diseasesofsweetp00taub Year: 1914 27 Figs. 12-15. Showing (12) mycelium of Chaetomiuni spirochaete. 13, hairs, and 15, asci. 16, ascospores. 14 and can only be seen in young cultures. In old cultures the ascus wall readily breaks so that it is difficult to make out the arrangement of the ascospores. There are 8 ascospores to an ascus (Fig. 14-15). The ascospores are apiculate (Fig. 16) at both ends. The wall of the ascospore is smooth, light brown when young and dark when old. The ascospores readily germinate in a sweet pea broth
The diseases of the sweet The diseases of the sweet pea .. diseasesofsweetp00taub Year: 1914 27 Figs. 12-15. Showing (12) mycelium of Chaetomiuni spirochaete. 13, hairs, and 15, asci. 16, ascospores. 14 and can only be seen in young cultures. In old cultures the ascus wall readily breaks so that it is difficult to make out the arrangement of the ascospores. There are 8 ascospores to an ascus (Fig. 14-15). The ascospores are apiculate (Fig. 16) at both ends. The wall of the ascospore is smooth, light brown when young and dark when old. The ascospores readily germinate in a sweet pea broth which is made up as follows: Take 15 grams of ground sweet pea seeds to 1000 cc of water. Bring to a boil, filter, then add 15 grams of agar; bring to a boil, then filter, tube and sterilize in the autoclave for 15 minutes at 15 pounds pressure. FUSARIUM ROOT ROT, Fusarium lathyri n. sp. Historical. It seems that Tulasne53 was the first to recognize the parasitic nature of Fusarium. In 1883 Hansen54 describes a dis- ease on oats which is attributed to Fusarium graminum Corda. In 1884 'Worthington Smith55 describes a wheat disease due to Fusispor-
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