. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. Fig. 130. chrysomyxa Rhododendri in a leaf of Rh. hirsutttm. Vertical section through a teleutospore-layer. e—€ epidermis of the under surface of the leaf. Adjoining the spores is the tissue of the leaf traversed and distorted by mycelial filaments m of Chrysomyxa; a a row of teleutospores which have not yet germinated; / a similar row in which the uppermost teleutospore has formed a promycelium, and on this sterigmata and sporidia are beginning to be formed in basipe
. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. Fig. 130. chrysomyxa Rhododendri in a leaf of Rh. hirsutttm. Vertical section through a teleutospore-layer. e—€ epidermis of the under surface of the leaf. Adjoining the spores is the tissue of the leaf traversed and distorted by mycelial filaments m of Chrysomyxa; a a row of teleutospores which have not yet germinated; / a similar row in which the uppermost teleutospore has formed a promycelium, and on this sterigmata and sporidia are beginning to be formed in basipetal succession. Most of the other rows show the first commencement of the formation of promycelia on the uppermost teleuto- spore. Magn. 140 times. FIG. 131. Chrysomyxa Rhodo- dendri. A single isolated row of teleutospores aAer completion of germination and shedding of the sporidia. Leptochrysomyxa (Chrysomyxa Abietis, Unger) forms exactly the same teleutospores with promycelium and sporidia, which are scarcely distinguishable from those of the two former species. But the germ-tubes from the sporidia produce mycelia which only form teleutospores; no aecidia or uredines have ever been observed on them. It is evident that the provisions for the life of these species are different from those of the species first described. This however might be the case while the morphological conditions remained the same; but here there is the important difference, that the whole aecidium-generation is passed over and struck out of the cycle. It may be that it does occur in some Leptopuccinieae which have not been thoroughly examined as much as in Puccinia Berberidis, and that we merely have not yet learnt the place and the conditions of its occurrence. We may allow the possibility of this even in the four last-named species, which have been very often and very thoroughly examined and in which there is no indication of any formation. Please note that these images are extracted from scanned pa
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