Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 EXOBASIDIUM. 425 from each a spindle-shaped spore is abjointed (Fig. 257). The liasidiospores divide in water by formation of cross-septa, and a germ-tube arises from each terminal cell. On a young leaf of Vaccinium the germ-tube penetrates and gives rise to a mycelium (Fig. 258) ; on other substrata the germ-tube sprouts into several very fine sterigmata, from the extremi- ties of which a series of c
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 EXOBASIDIUM. 425 from each a spindle-shaped spore is abjointed (Fig. 257). The liasidiospores divide in water by formation of cross-septa, and a germ-tube arises from each terminal cell. On a young leaf of Vaccinium the germ-tube penetrates and gives rise to a mycelium (Fig. 258) ; on other substrata the germ-tube sprouts into several very fine sterigmata, from the extremi- ties of which a series of conidia are abjointed; the conidia may give off secondary coni- dia, perhaps also tertiary. In nutritive solution, Brefeld ob- tained an increased number of germ-tubes and a continuous production of conidia ; in air, conidia were produced on conidia, but inside the solution the conidia gave off hyphae from which new conidia arose. Fig. 2o7.—Exohasidivm vaccinii. The basidial layer is shown developing from the intercellular mycelium of the shoots. (After Woronin.)
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