. Comparative morphology and biology of the fungi, mycetozoa and bacteria. Fungi -- Morphology; Bacteria -- Morphology. FIG. 31. Dactylium macrosporitm, Fr. Extremities of spori- ferous hyphae. a in a dry state with a head of spores above, b in water with the primordia of the youngest spores j at the extremities of the branches, the small unevennesses beneath being the points of attachment of the older spores which have become detached in the water. Magn. 300 FlG. 32. Botrytis Bassii, Bals. a end of a young sporiferous hypha ; short lateral branchlets have successively abjointed each 1
. Comparative morphology and biology of the fungi, mycetozoa and bacteria. Fungi -- Morphology; Bacteria -- Morphology. FIG. 31. Dactylium macrosporitm, Fr. Extremities of spori- ferous hyphae. a in a dry state with a head of spores above, b in water with the primordia of the youngest spores j at the extremities of the branches, the small unevennesses beneath being the points of attachment of the older spores which have become detached in the water. Magn. 300 FlG. 32. Botrytis Bassii, Bals. a end of a young sporiferous hypha ; short lateral branchlets have successively abjointed each 1-4 round spores. b end of an old branch which is producing spores by abjunction and is thickly covered with spores, the youngest of which are terminal, c two sporo- genous branches, from which all the spores have fallen with the exception of the youngest and uppermost, a magn. 390, b about 700 times. See Bot. Ztg. 1867. spores are very soon entirely detached and either fall off or remain adhering only to the one last formed, as happens in the formation of the gonidia of Epichloe typhina, in Claviceps and in the forms known by the name of Acrostalagmus of Corda. In other cases, as Botrytis Bassii and the small gonidia of species of Hypomyces and Hypocrea1, each spore arises at least far enough above its predecessor for the points of insertion to occupy some space, and the spores therefore remain united into sympodial successive heads. If the spores are detached, their insertions form slight projections or even short stalks at the extremity of the sporophore (Fig. 32). If the sporophore were to elongate between each pair of spores a sympodial arrangment would be produced, like that of Phytophthora in Fig. 20. 1 Verticillium agaricinum and its allies, Trichoderma viride, &c. See Tulasne, Carpol. III. [4]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations
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