. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 321 Foreign species are on Papaver, Ranunculus, Delphinium, Calen- dula, Thalictrum and several other hosts. E. betiphilum Bub. is described on beet seed capsules; ^° E. lephroideum for the same host in France; E. calendulae (Oud.) de B. on Calendula. E. crastophilum Sacc.^ Sori in leaves, subcircular to linear, about mm. in length, usually distinct though occasionally merged, black, long covered by the epidermis; spores dark-brown, tightly packed and adhering. Fig. 237.—E. ellisii, chlamy
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 321 Foreign species are on Papaver, Ranunculus, Delphinium, Calen- dula, Thalictrum and several other hosts. E. betiphilum Bub. is described on beet seed capsules; ^° E. lephroideum for the same host in France; E. calendulae (Oud.) de B. on Calendula. E. crastophilum Sacc.^ Sori in leaves, subcircular to linear, about mm. in length, usually distinct though occasionally merged, black, long covered by the epidermis; spores dark-brown, tightly packed and adhering. Fig. 237.—E. ellisii, chlamydospores germinating within the leaf ti3sue, sporidia superficial. After Halated. more or less, chiefly ovoid to spherical or angled through pressure, rather thick-walled, 8-14 n in length. On Poa, Phleum, Agrostis and other grasses in Europe and America. E. irregulare Joh. occurs on species of Poa in Europe and America; E. polysporum (Pk.) Farl. on various hosts including the com- mon sunflower. E. eUisii ; Sori in leaves, forming pale white spots, indefinitely limited, subconfluent; spores hyaline or slightly yellowish, clustered in the intercellular spaces beneath the stomata, spherical, thick-walled, (2-5 Ai) chiefly 16-20 n but varying from 11 to 25 m in diameter; conidia hypophyllous, abundant, acicular, small, 10-14 ix by less than 1 fi. On spinach. New Jersey.'^' '^^ The chlamydospores germinate in situ beneath the stomata and bear the sporidia on tufts of promycelia which emerge through the stomata, presenting much the appearance of a 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
