246 SUMMARY OF CUERENT RESEARCHES RELATING TO 



Cladosporium Eormodendron, etc., which he describes as a new genus. 

 Harziella. 



The question is discussed as to whether the chestnuts are attacked 

 during storage, and the manner of attack, whether during flowering or- 

 after the fruit is formed. 



Diseases of Plants.* — A. Sharpies reports extensive damage to 

 Hevea brasiUensis from Ustulina zonata. He noted that boring insects 

 almost always accompanied the attack of the fungus. The latter 

 weakened the wood and made it more liable to insect boring. The 

 fungus in turn follows in the further tracks of the insects. The double 

 attack often kills the trees. Plantations ten to twelve years old suffer 

 very considerably. 



Juan J. Chavanne f enumerates several diseases of sugar-cane. 

 Cercospom KopTcei forms oblong red spots on the leaves in spring and 

 autumn, especially during the rainy season ; Leptosphseria Sacchari 

 causes oval blotches on the leaves of a white or yellow colour. The 

 damage done by this fungus is inconsiderable, but infected parts should 

 be gathered and burnt. A further series of leaf parasites are mentioned, 

 but the damage they do is not serious. 



G. Dorogin J reports from near Petrograd an attack of adult celery- 

 lants by two species of Septoria, S. Apii var. Maffnusiana and S. Apii- 

 graveolentis sp. n. The former caused blotches of varying appearance, 

 dotted with few or many pycnidia, or the pycnidia were gathered in 

 small groups over the leaf surface. The latter invariably formed spots 

 strewn with pycnidia. The disease in both instances begins with the 

 lowest leaves. The seeds may be infected and pass on the disease to the 

 young plants. 



Fungi and Lichens from Guam Island. § — Guam is one of the 

 largest islands in the Marianne group, which lie about 2440 kilometres 

 east from the PhiUppines. The islands are of volcanic origin. The 

 list of plants has been compiled from all the known lists in the hope 

 that it may prove a basis for future work. Louis Freycinet in 1819 

 made the first records of some twenty-five specimens which were 

 determined and classified by Persoon ; only thirteen of these are now 

 recognizable. The last material collected was by Mary S. Clemens in 

 1911 and R. C. McGregor during the same year. A fairly long list is 

 given with localities and bibliography. 



* Agric. Bull. Fed. Malay States, iv. No. 4 (1916) pp. 98-105. See also Bull. 

 Agric. Intell. Rome, vii. (1916) pp. 1038-9. 



t Ministry Agric. Nac, Buenos Aires, 1916, pp. 5-32 (2 pi.). See also Bull. Agric. 

 Intell. Rome, vii. (1916) pp. 1039-40. 



X Ministry Agric. Mycol. PI. Path., i. (1915) pp. 57-75. See also Bull. Agric. 

 Intell. Rome, vii. (1916) p. 1041-2. 



§ Mycologia, ix. (1917) pp. 4-22. 



