. Fig. 104. —Sphaerella laricina. Section through a diseased larch needle in June after it has Iain on the ground from the previous year. The mycelium is thick, thick-walled, and of a light-brown colour. The perithecia contain asci and asco- spores. To the extreme right is a pycuidium containing little oblong conidia, alongside a perithecium. x ly^. (After R. Hartig.) for distribution by means of conidia. As, however, we ascend into the mountains, the snow lies longer, so that the perithecia cannot begin to form so early, the ascospores are correspondingly late in reaching maturity, and the se
. Fig. 104. —Sphaerella laricina. Section through a diseased larch needle in June after it has Iain on the ground from the previous year. The mycelium is thick, thick-walled, and of a light-brown colour. The perithecia contain asci and asco- spores. To the extreme right is a pycuidium containing little oblong conidia, alongside a perithecium. x ly^. (After R. Hartig.) for distribution by means of conidia. As, however, we ascend into the mountains, the snow lies longer, so that the perithecia cannot begin to form so early, the ascospores are correspondingly late in reaching maturity, and the season during which the parasite may spread is still further shortened by the earlier commencement of winter. At an elevation of 1500 metres,
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
