166 MORPHOLOGY AND TAXONOMY [Bot. Absts., Vol. IV, 



10S8. Derrell, L. W. The imperfect stage of Leptosphaeria tritici of wheat. Science 

 50:252-253. 1919. — In connection with studies of anthracnose of small grains, a species 

 of what seemed to be an Ascochyta has frequently been found on dead straw. Recently, 

 while culturing Leptosphaeria tritici, the relationship of these two forms has been revealed. 

 The pycnidial fruiting bodies grow side by side with the perithecia of L. tritici, on dead 

 wheat straw in the spring. The pycnidia are filled with guttulate spores, usually two-celled, 

 and approximately 12-20x3.4-^1 u. Single spore cultures of the ascospores of L. tritici 

 obtained by the Hansen method of isolation, produce on potato agar and on sterile straw, 

 pycnidia and pycnospores like those found growing with the perithecia on the wheat plant. — 

 — A. H. Chivers. 



1089. Edgerton, C. W. A new Balansia on Cyperus. Mycologia 11:259-261. PI. 12. 

 1919. — The fruiting parts of Cyperus virens are found to be displaced by large black sclerotia. 

 Young sclerotia develop hyaline conidia. Perithecia are developed in the outer layer of the 

 mature sclerotium. A technical description of Balansia cyperi sp. nov. is presented. — 

 H. R. Rosen. 



1090. Elliott, Jessie S. Bayliss. On the method of growth of the conidial clusters of 

 Trichothecium roseum. Trans. British Mycol. Soc. 6:37-38. Fig. 1-4- 1918. — The conidia 

 are found not to be inserted, as usually figured, at the same level at the tip of the conidio- 

 phore. By a peculiar basipetal method of growth long chains or racemes of conidia are formed 

 which are pendant from the apex of the conidiophore. The details of the process are figured. 

 — H. M. Fitzpatrick. 



1091. Elliott, Jessie S. Bayliss. Some new species of fungi imperfecti. Trans. British 

 Mycol. Soc. 6:56-61. PI. 1. 1918. — Aegerita viridis n. sp. and Clonostachys dichotoma n. 

 sp. on rotten wood, and Dendrodochium album n. sp. and Trichocrea oodes n. sp. on fallen pine 

 cones are described and figured. Haplographium fusoipes (Preuss) Sacc. and Sterigmatocysiis 

 phaeoccphala Sacc. are recorded for the first time for the British Isles, and are also figured. 

 — H. M. Fitzpatrick. 



1092. Eriksson, Jakob. Etudes biologiques et systematiques sur les Gymnosporangium 

 suedois. [Taxonomy of Gymnosporangium in Sweden.] Compt. Rend. Acad. Sci. Paris 168: 

 470-473. 1919. — In Sweden two species of Gymnosporangium occur on Juniperus communis — 

 G. clavariaeforme (Jacq.) DC. and G. tremelloides (A.Br.) v. Treb. Of the former three 

 biologically different forms occur in different countries, as follows: 1. f.sp. Crataegi, with 

 aecidia, Rostelia laccrata (Sow.) Fr., on various species of Crataegus, rarely on Cydonia vul~ 

 garis and Pyrus malus, as well as on Amelanchier canadensis. A. erecta and A. vulgaris. 2. 

 f.sp. Pyrus communis, with aecidia on Pyrus malus, exceptionally on Crataegus, Cydonia 

 vulgaris and Amelanchier vulgaris. 3. f.sp. Amelanchieris , with aecidia on various species of 

 Amelanchier. Five biologically different forms of Gymnosporangium tremelloides occur in 

 different countries, as follows: (1) f.sp. Aucupariae, with aecidia, Rostelia cornuta (Pers.) 

 Mull., on Sorbus Aucuparia, occasionally on Cydonia vulgaris, and rarely on Sorbus Aria 

 and Pyrus malus. (2) f.sp. Mali, with aecidium, Rocstelia penicillata (Mull.) Fr., on Pyrxis 

 malus, occasionally on Cydonia vulgaris, rarely on Pyrus communis and Sorbus Aucuparia. 

 (3) f.sp. Amelachieris , with aecidium, Roeslelia Amelanchieris (DC.) Roun., on Amelanchier 

 vulgaris. (4) f.sp. Torminalis, with aecidium on Sorbus Torminalis and S. latifolia, and 

 occasionally on S. Aria, S. chamaemespilus and S. hybrida. (5) f.sp. Ariae, with aecidium 

 on Sorbus Aria, occasionally on S. Chamaemespilus. In southern Sweden an aecidial stage 

 on pear was also found, which appeared to belong to Gymnosporangium clavariae f.sp. Pyri- 

 communis. — F. B. Wann. 



1093. Eriksson, Jacob. Zwei russische Gymnosporangieen. [Two Russian Gymno- 

 sporangia.] Ark. Bot. [Stockholm] 15: 1-23. PI. 1-3. 1919. — The author describes two 

 species of Gymnosporangium obtained from Russian sources and gives the results of numerous 

 cross inoculation experiments on several genera of Pomeae. As a result of his studies of the 



