. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. 84 DISEASES OF CULTIVATED PLANTS As a rule a basidium bears four spores at its apex. There are two important groups, Agaricaceae and Gasteromycetaceae. In the former, represented by mushrooms and toadstools, the basidia are borne on the gills, whereas in the Gastero- mycetaceae, including puffballs, stinkhorn, etc., the spore- bearing portion is at first concealed in a membrane or volva. 1 ^. Tig. 15.—Typical forms of basidia, with spores in ilie Hasidio
. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. 84 DISEASES OF CULTIVATED PLANTS As a rule a basidium bears four spores at its apex. There are two important groups, Agaricaceae and Gasteromycetaceae. In the former, represented by mushrooms and toadstools, the basidia are borne on the gills, whereas in the Gastero- mycetaceae, including puffballs, stinkhorn, etc., the spore- bearing portion is at first concealed in a membrane or volva. 1 ^. Tig. 15.—Typical forms of basidia, with spores in ilie Hasidio- mycetes. i, Tulostoiiia mamiiiositm ; 2, nacrowyces deliijutscens \ 3, hasidia with spores, and cystidia of Peniop/iora iticonspicua ; 4, bisporoiis basidia of cc/iina/tim ; 5, two spores of same showing persistent stfrigmata ; 6, Si/inx/ert/n -///^are ; 7, portion of hymfniiim of a typical agaric, liiccyhc mtcjosfera, with basidia, bearing spores, cystidia, or sterile basidia, and elongated cystidia. All highly mag. There is much difference of opinion as lo the exact position, in the sequence of evolution, of the two important families, Ustilaginaceae—smuts and bunts of cereals, etc.—and the Uredinaceae—rusts and mildews of cereals and other plants. In the latter group heteroecism is rampant. The members of both groups are almost without exception. 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 may not perfectly resemble the original Massee, George, 1850-1917. New York : Macmillan
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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910
