BOTANY. 519 



it. In the way of exsiccata there have appeared daring the 

 year continuations of Ilabenhorst's, Oudeman's, and Von Thii- 

 raen's series, and of Saccardo's Mycotheca Veneta ; and a new 

 series, Fungi Gallici, is announced by Roumeguere. 



Diseases of Plants. 



The full and final account of Woronin's investigations on 

 the cause of the disease known as "club-foot" in turnips has 

 been published, with most excellent illustrations, in Prings- 

 lieim's Jahrbilcher. lie thinks that the disease is caused by 

 a minute fungus related to the Jfyxomycetes, to which he 

 gives the name of Plasmodlophova brassicce. A dispute has 

 arisen between Cornu and Millardet as to the cause of the 

 swelling of the roots of vines attacked by the Phylloxera. 

 Millardet had advanced the opinion that the swelling was 

 caused by the mycelium of some unknown fungus rather 

 than by the Phylloxera. Cornu, on the other hand, denies 

 the existence of any mycelium which could cause the trou- 

 ble. Cornu reports a new disease of the vine in the district 

 ofNarbonne. It forms blackish spots on the leaves, stems, 

 and grapes, and Cornu thinks the fungus is what Avas de- 

 scribed by Cesati as Cladosporiwn viticolum. In the Comptes 

 Penclus are two notes by Cornu, on the Spots on Maple Leaves 

 caused by Phytisma acerinwn, and on the Lettuce Mould. 

 From the exnerimental station at Klosterneuberjx, near Vien- 



i CD ' 



na, have been issued a number of papers. The most impor- 

 tant is a Description of the Species of Fungi which Attack 

 the Vine, by Von Thiimen. Two hundred and twenty species 

 are mentioned, but they are not all peculiar to the grape. A 

 second paper by Von Thiimen treats of Two New Diseases of 

 Grapes caused by Apiosporiwn citri and Sphcarella gibettiana. 

 Another account of Fungi which Attack the Vine is given 

 by Pirotta, who enumerates 104 species. "The Phenomena 

 of Decay in the Wood of Coniferce and Oaks " is the title 

 of a book, illustrated with twenty-one plates, by R. Hartig, 

 who gives the details of the changes produced by certain 

 species of fungi in the trees above named. Dr. Ernst, of Ven- 

 ezuela, has a paper in Spanish on the Diseases of the CofFee- 

 tree, including those of insect as well as of fungus origin. 

 A curious fungus from Samoa, called Limamea by the na- 

 tives, was exhibited at a meeting of the Linnean Society, by 



