Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 418 UREDINEAE. Caeoma. Caeoma abietis-pectinatae Eeess. The aecidiospores may be fouiid on the lower surface of young needles of silver fir; the aecidia are yellow elongated cushions situated on either side of the needle mid-rib, and are without peridia. Pycnidia (spermogonia) are pro- duced before the aecidia. The mycelium is septate and intercellular with few
Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 418 UREDINEAE. Caeoma. Caeoma abietis-pectinatae Eeess. The aecidiospores may be fouiid on the lower surface of young needles of silver fir; the aecidia are yellow elongated cushions situated on either side of the needle mid-rib, and are without peridia. Pycnidia (spermogonia) are pro- duced before the aecidia. The mycelium is septate and intercellular with few haustoria. I have found the fungus fairly abundant on the Alps and in the Danube valley near Passau. Teleutospores are unknown. Caeoma deformans (Berk, et Br.) Tubeuf {Uromyces deformans Berk, et Br. or Caeoma Asanuro Shirai). This induces the formation of ' witches' brooms ' or of antler-like Fig. -IbZ.—Carona ubiHU j>ectinatae. Needle of Silver Fir showing CaeoHia-patches on the lower surface, (v. Tubeuf del.) Fig. 254.—Caeoma dtjonaans on Thuiopsia dolabrala. (v. Tubeuf phot, from dried material presented by Prof. Grasmann of Tokio.) 1 Reess, Rostpilzformen, 1869. -Berkeley, 'The fungi collected during the expedition of 'Chal- lenger.'' Jour, of Linnean Soc, xvi., 1876. •'Shirai, Botanical Magazine, Tokio, 1889.
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