Eumycetes. — Pflanzenkrankheiten. 229 



the cases, where the Aecidium is first-described, he will nominale 

 the species according to ihe füll name of this form, f. inst, he calls 

 Piiccinia dioica P. Magn. Puccinia Aecidii Circii (de Cand.) Liro. 

 4 new species are described: Uromyces borealis, an Uromycopsis on 

 Rtimex anfolius, which previously has been distributed from Fin- 

 land as Aecidium flaviim (Karsten: Fung. Fennic. exs. No. 197) and 

 from Sweden as Uromyces Acetosae Schrot. (Vestergren: Microm. 

 rar. No. 446), Phragmidium perforans (Dietr.) Liro, Syn: Aecidium 

 perforaus Dietrich (Arch. für die Naturkund. Liv-, Ehst- und Kur- 

 lands, Serie III. Bd. I. 1859.) on Rubus saxatilis. (According to the 

 description it is the same spec. as Vleugel has described as Phrag- 

 midium saxatile in Svensk botanisk Tidskrift 15/6 1908. Ref.) Phragmi- 

 dium Rosae acicularis and Uredo Airae flexuosae. 4 endemic species are 

 to be noted : Pucc. Eutremae Liro , Pucc. SerpyUi Liro , Pucc. Sassureae- 

 alpinae Liro and Aecidium TJiysselini Liro. Species new for F Inland 

 are: Pucc. Atragenicola (Bub.) Syd., Pucc. Holboelli (Hörn.) Rostrup, 

 Pucc. Juliana Dietel, Pucc. Glechomatis deC, Pucc. Porteri Peck, 

 Pucc. Adoxae Hedw. fil., Ptccc. Picridis Haz., Pucc. Virgaureae (de 

 Cand.) Lib., Pucc. MiUefolii Fuck., Pucc. artemisieUa Syd., Pucc. 

 Uraleiisis Tranz., Pucc. Verruca Thüm., Phragmidium tuberculatum 

 Müll., Melampsorella Feurichii P. Magn., Melampsorella Kriegeriana 

 P. Magn., Uredinopsis ßlicina (Niessl) P. Magn., Pucciniastrum arcti- 

 cum (Lagerh.) Tranz., Ptccc. sparsum (Wt.) Ed. Fisch., Endophyllum 

 Sempervivi (A. & S.) de BJ^, Aecidium Ligidariae Thüm. and Uredo 

 Airae Lagerh. 



According to observations, made \iY the author in the field, 

 Aecidium Hepaticae Beck belongs to Pucc. Melicae (Er.) Syd. and 

 an Aecidium. on Rhamnus Frangiüa to Pucc. Eriophori on Erio- 

 phorum alpinum. 



Triphragmium grande Karsten must be discarded. Karsten has 

 mistaken stems of Filipendula Ulmaria for Rumex Acetosa. 



I. Lind (Copenhagen). 



Brooks, C, The Fruit Spot of Apples. (Bull. Torr. bot. Club. 

 XXXV. p. 423—456. pl. 29—35. 1908.) 



The author reviews some of the previoas work on apple spot 

 fungi and then treats in detail the structure and the development of 

 the apple comparing his studies with those of other workers. Two 

 distinct diseases were found. One of these the writer calls the Fruit 

 Pit, and the other he calls the Fruit Spot. Examinations and cultu- 

 res of the brown tissue surrounding the pits failed to detect the 

 presence of fungi or bacteria which might cause the disease. Fruit 

 Pit. The internal browning is especially conspicuous in the region 

 of the vascular System. The author concludes that the pit with the 

 accompanying brown tissue are the result of abnormal physiological 

 conditions. The fruit spot disease resembles the fruit pit disease very 

 much, but the spot is caused by a Cylindrosporium which the author 

 names C. pomi Brooks. Extensive notes are given on iaboratory inocu- 

 lations, field work, the characteristics of the fangus, relation of the 

 fungus to various culture media, and the relation of the fungus to 

 the host. The disease is carried through the winter by chlamydo- 

 spores and by sclerotial masses of the tissue. Spraying with Bordeaux 

 mixture is a preventive, applications made late in June or early in 

 Jul}' being as effective as those made earlier in the season. 



R. J. Pool. 



