Annual report of the North Carolina Agricultural Experiment Station . P°o] Fig. ((x 1050). -Ascospores, from Irish potato; the surface of one roughened, the other smooth On Pea Agar the internal fungus made a profuse white aerial growth andlarge sickle-shaped 3 to 5-septate conidia, macroconidia, were produced abun-dantly over the surface of the medium. At the point of inoculation a ratherlarge yellow cluster of these macroconidia was always produced. Small 1-sep-tate or continuous conidia, microconidia, were also found in Fig. 7.—Cultures on Irish potato, 8 days after inoculation,
Annual report of the North Carolina Agricultural Experiment Station . P°o] Fig. ((x 1050). -Ascospores, from Irish potato; the surface of one roughened, the other smooth On Pea Agar the internal fungus made a profuse white aerial growth andlarge sickle-shaped 3 to 5-septate conidia, macroconidia, were produced abun-dantly over the surface of the medium. At the point of inoculation a ratherlarge yellow cluster of these macroconidia was always produced. Small 1-sep-tate or continuous conidia, microconidia, were also found in Fig. 7.—Cultures on Irish potato, 8 days after inoculation,showing difference in growth of internal fungus tubes, a and c, andascigerous fungus tubes, b and d. The ascigerous fungus produced an almost colorless, strict growth. Noyellow spore clusters were ever produced and no 3 to 5-septate conidia wereever found. Small, hyaline, continuous or once septate conidia, very similarto the microconidia of the internal fungus, were found in abundance. FUSARIUM CAUSING COWPEA WILT. 109 On, Rice.—Probably the most striking differences shown on any medium werethe different colorations produced by the internal fungus and the ascigerousfungus, particularly on rice.
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