. Spring in the fallen needles, whicli lie on the ground over winter. The ascospores are mature and capable of infection at the beginning of June. In forests of pure larch, or in mixture with spruce, the ascospores are easily distributed by wind. In larch, underplanted with beech, the spores are kept down towards the ground by the canopy of beech foliage, so that, during the summer, they cannot be carried up to the larch crown. Hartig gives the following interesting facts on its distriljution. ,, , , , 1 1 ^1 â 1 Fic. 103.â('., As alreadv remarked, the perithecia de- cunidia be
. Spring in the fallen needles, whicli lie on the ground over winter. The ascospores are mature and capable of infection at the beginning of June. In forests of pure larch, or in mixture with spruce, the ascospores are easily distributed by wind. In larch, underplanted with beech, the spores are kept down towards the ground by the canopy of beech foliage, so that, during the summer, they cannot be carried up to the larch crown. Hartig gives the following interesting facts on its distriljution. ,, , , , 1 1 ^1 â 1 Fic. 103.â('., As alreadv remarked, the perithecia de- cunidia before and after , . " 1 ,⢠11 11 11 dutxthment from the velop in spring on tlie lalleii larcli needles, basidia. '., Micro-conidia , . , , .' 1 1 â¢, â i 1 1 from the interior of the and in li)\v-lying locahties the spores reach cushions, x *â {". (After maturity at the beginning of June. Xew '^' "'^'^'sO couidial cushions are not found on the larch in our neighliourhood before -Tuly. The parasite has thus four months at its disposal
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
