. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 599 Branches circinate at apex; conidia mesogenous, muricate 3. Acrospeira. Branches spirally twisted; conidia exogenous 4. Streptothrix, p. 599. Hyphae simple or with straight branches 5. Virgaria. All hyphae more or less creeping Branches curved or lash-like. . 6. Campsotrichum. Branches not curved ' Conidia spiny, rarely smooth 7. Zygodesmus, p. 599. Conidia smooth Conidia sessile 8. Trichosporium. Conidia on stalks Conidia on tooth-like sterig- mata 9. Rhinocladium. Conidia on jar-like stalks

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. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 599 Branches circinate at apex; conidia mesogenous, muricate 3. Acrospeira. Branches spirally twisted; conidia exogenous 4. Streptothrix, p. 599. Hyphae simple or with straight branches 5. Virgaria. All hyphae more or less creeping Branches curved or lash-like. . 6. Campsotrichum. Branches not curved ' Conidia spiny, rarely smooth 7. Zygodesmus, p. 599. Conidia smooth Conidia sessile 8. Trichosporium. Conidia on stalks Conidia on tooth-like sterig- mata 9. Rhinocladium. Conidia on jar-like stalks .... 10. Basisporium. Hyphae forming a crust, parasitic 11. Glenospora. Streptothrix Corda Conidiophores erect, monopodially branched, the branches spirally coiled; conidia apical or lateral, single, sessile or with short sterigmata, dark colored. A small genus. S. dassonvillei Broc-Ros. is noted as the cause of mold of grain and fod- der.3" Zygodesmus Corda Hyphie and conidiophores creeping, the lat- ter branched, light or dark colored, here and there irregularly inflated, septate at the swel- lings; conidia globose or ovate, muricate, rarely smooth, on short sterigmata or on basidia-Hke branches of the sterigmata. Some fifty species, chiefly non-parasitic. Z. albidus E. & H.^ Halsted describes a disease characterized by a flourj' coating on violet leaves and ascribes it to this species.. Fig. 401.—Periconia. After Saccardo.. 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 work.. Stevens, Frank Lincoln, 1871-1934. New York : Macmillan