. The fungi which cause plant disease . Plant diseases; Fungi. 322 THE FUNGI WHICH CAUSE PLANT DISEASE E. australe Speg. Son foliar, forming spots, yellowish to eventually dark, usually mm. in length; spores light to reddish-yellow, ovoid to spherical or slightly angled, chiefly 10-16 n in length; conidia Unear, somewhat curved, usually 30-55 x 1-2 ii. Common and destructive on many species of Physalis and on Solanum, especially on some of the cultivated forms throughout the Americas and in Africa. E. fuscum ;^ Sori , about 2-6 mm. or by confluence much larger, spores
. The fungi which cause plant disease . Plant diseases; Fungi. 322 THE FUNGI WHICH CAUSE PLANT DISEASE E. australe Speg. Son foliar, forming spots, yellowish to eventually dark, usually mm. in length; spores light to reddish-yellow, ovoid to spherical or slightly angled, chiefly 10-16 n in length; conidia Unear, somewhat curved, usually 30-55 x 1-2 ii. Common and destructive on many species of Physalis and on Solanum, especially on some of the cultivated forms throughout the Americas and in Africa. E. fuscum ;^ Sori , about 2-6 mm. or by confluence much larger, spores light yellow to chestnut-brown, provided (especiaUy when young) with a conspicuously swollen gelatinous envelope, smooth, chiefly 13-19 /i in length; the hypophyllous matted outgrowths usually show few conidia which are fusiform, single-celled or sep- tate, 10-22 X 3 M- It occurs on Papaver in Europe and Eastern North America. E. nymphaese (Cunn.) Set.^*' Sori in leaves, forming variable and irregular areas, usually most prominent on the under side, yellowish or with age reddish- brown, scattered or confluent; spores hyaline, ovoid to subspherical, usually apiculate and with the remains of the hypha as a basal appendix, smooth or under an immersion lens minutely verrucu- lose, 10-14 /i in length; conidia not observed but spores said to germinate in situ. On leaves of various water lilies in both the old and new world. Doassansia ;^' ^^ (p. 315) Sori in various parts of the host, usually in the leaves, rather permanently embedded in the tissues; spore-balls conspicuous, per- manent, consisting of a distinct cortical layer and a central mass of fertile cells en- FiG. ^'^^ly filling the interior, or with the inner- Part section through most cells Supplanted by parenchymatous a spore ball showing i i i .1 1 1^ i- sterile and fertile cells, cells Or hyphal threads; spores hyalme or ter Dietei. yellowish, with smooth, usually thin, walls; germination often
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
