. Fig. 104. —Spiiaerclia larktna. Section through a diseased larch needle in .June after it has lain on the ground from the previous j-ear. 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 pycnidium containing little oblong conidia, alongside a perithecium. x J-^". (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, an
. Fig. 104. —Spiiaerclia larktna. Section through a diseased larch needle in .June after it has lain on the ground from the previous j-ear. 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 pycnidium containing little oblong conidia, alongside a perithecium. x J-^". (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 tlie earlier commencement of winter. At an elevation of 1500 ,
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
