. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. PUCCINIA 311 I as in other instances, one attack implies immunity in the j future. i ! Pink rust {Puccinia arenariae, Wint.) often causes injury j to cultivated pinks and carnations. It forms small blackish spots arranged in irregular circles on the leaves and stem. H', ; . .••.?. ... ..V -%^-. Fig. 91.—Puccinia malvacearum. Hollyhock leaf showing pustules of fungus ; 2, teleutospores, one germinating. Highly mag. Teleutospores only are present. These ar
. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. PUCCINIA 311 I as in other instances, one attack implies immunity in the j future. i ! Pink rust {Puccinia arenariae, Wint.) often causes injury j to cultivated pinks and carnations. It forms small blackish spots arranged in irregular circles on the leaves and stem. H', ; . .••.?. ... ..V -%^-. Fig. 91.—Puccinia malvacearum. Hollyhock leaf showing pustules of fungus ; 2, teleutospores, one germinating. Highly mag. Teleutospores only are present. These are fusoid or clavate, apex thickened, yellow-brown, smooth, 30-50X10- 12 /A, pedicel hyaline, about as long as spore. This fungus is common on many of our wild caryophylla- ceous plants, as chickweed, stitchwort, lychnis, etc., hence all such weeds should not be allowed to grow in the neigh- bourhood of cultivated plants. The directions given under. 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
