356 SUMMARY OF CURRENT RESEARCHES RELATING TO 



spores ; Venturiella, related to Venturia, but with brown septate spores ; 

 Leucothyridium, with a spreading stroma and muriform colourless spores ; 

 Pleomelogramma, differs from the previous genus in the want of para- 

 physes ; Gopranophilus, near to Treleasia, spores lanceolate, one septate ; 

 ( 'alyptronectria, near to Hyponectria, but with muriform spores ; DotJii- 

 deovalsa (Dothideacea?), with small colourless bent spores ; Goscinopdtis, 

 similar to Polystomella, but with simple colourless spores. 



French Fungus Flora.* — R. Bigeard and H. Guillemin have pub- 

 lished a Flora of the larger fungi with descriptions of the more important 

 fleshy forms of Agarics, Boletes, Polypores, etc. They have omitted 

 any account of the smaller species, reserving a discussion of them and 

 of the rarer species for a supplementary volume. Large use has been 

 made of keys to genera and species. E. Boudier has written a preface 

 to the volume. 



Pathogenic Fungi.f — Louis Matruchot has identified a fungus 

 causing tumours under the human skin as Sporotrichum Beurmanni. 

 Two other species, 8. SchencM and S. Gougeroti, have also been isolated 

 and examined ; the former was taken from an abscess, the latter was 

 found in the muscles of the leg of an invalid, and was specially charac- 

 terized by its Tor ida production. The three fungi are closely related 

 morphologically, and form a small natural group. 



Plant Diseases. — Griffon and Maublanc % record several parasites 

 on hot-house plants : Pestalozzia Clusise sp. n., which forms spots on 

 leaves of Glusia, and Phyllostkta Dracense sp. n., which also attacks the 

 foliage of the host. They also examined a GlcROsporium parasitic on 

 Godieeum leaves, and find that two previously described forms, Glmo- 

 sporium Sorau&rianum and G. Grotonis, are identical with the one found 

 by them. They retain the first name, as the older. On the spots 

 formed by the Glo&osporium they found Aster oma Codisei. They suggest 

 that it may be saprophytic on the destroyed tissue. 



An enquiry § has been made as to the distribution of wart disease of 

 potatoes in Great Britain. It is largely confined to North Central 

 England, North Wales, and Central Scotland. There are still large 

 districts where the disease is unknown, and growers in these districts are 

 warned to be careful in their choice of seed potatoes, and not to manure 

 with rotten potatoes. 



G. Massee || has described a disease of cucumber and tomato plants 

 due to a minute fungus, Mycosphserella citrullina. The nodes of the 

 stem are attacked, the diseased patches becoming whitish, or of an ashy- 

 grey colour, and studded with the perithecia of the fungus. Only the 

 pycnidial form of the fungus — a form of Ascochyta — was found on the 

 diseased plants. Experiments at Kew proved that spores taken from 

 cucumber plants infected tomato plants, and those from the tomato were 



* Flore des Champignons superieurs de France les plus importants a connaitre. 

 Chalons-sur-Saone, 1909, 600 pp. (56 pis.). See also Bull. Soc. Mycol. France, xxv. 

 (1910) pr>. 254-6. f Comptes Rendus, cl. (1810) pp. 543-5. 



X Bull. Soc. Mycol. France, xxv. (1910) pp. 238-42 (1 pi.). 



§ Journ. Board. Agric. xvi. (1910) pp. 923-4. 



|| Kew Bulletin, 1909, pp. 292-3 (1 pi.). 



