224 : BOTANICAL NEWS. 
in welcoming M. de Seynes' ‘ Essai’ as a useful contribution to our 
mycological literature. 
BOTANICAL NEWS. 
Dr. Alexander Braun lately published, in the Proceedings of the Berlin 
Academy, a paper on the Isoétes collected last summer by Drs. Ascherson and 
Reinhardt, in the island of Sardinia, which he prefaces by some valuable 
general remarks and observations. The island of Sardinia and the adjacent 
three genera syaa Cephaloceraton, and Isoétella), in which Genari divides 
the original genus, and proposes instead three natural groups, the aquatic, 
amphibious, and terrestrial Isoëtes, all distinguished by excellent characters. 
Dr. Pringsheim, of Berlin, has been appointed Director of the Botanic Gar- 
den at Jena, in I ob vacated by Professor Schleiden, and Dr. Areschoung 
m Fries in the direction of the Upsala Garden, which 
the sn it sisi i 
essor Henkel, of Men is engaged on a monograph on Conifers. 
js Eus Mexicana, that singular Cucurbitacea, has recently been intro- 
duced by its first discoverer, Mr. Hugo Fink, of Cordoba, Mexico, and is now 
growing in the garden of the gentleman in whose honour the genus was named. 
The ovules prove to be erect, as correctly described in the original diagnosis. 
Christi 
known by his excellent papers on Composite, died, it appears, in Siberia in 1832. 
Nothing had been heard of him since 1835, when a paper of his on the flora 
steppes appeared in the ‘ Linnea.’ Originally he went to 
Siberia for the purpose of botanical exploration, but he dabbled there in mining 
misery, and made him prematurely old. Chamisso dedicated to him and the 
other two Lessings, the poet and the painter, the Composite genus i 
€ is another piece of Russian news, equally melancholy. In Jam st 
xact date not given—died M. N. Turczaninoff, of Charkow, author mA nu- 
herbarium. At one time occupying a high official position, he died in rather 
reduced M rieeyascans living on a small annuity from the Charkow University, 
to which bod d his herbarium. From Germany we hear of 
the death of the oldest professor of botany in that country, that of L. Ch. 
Treviranus, of Bonn, Foreign Member of the Linnean Society of London, 
which took place on the 6th of May. 
Pocker MICROSCOPES For Sarr.—Mr. Matthews, of Portugal Street, Lin- 
coln's Inn, has constructed, for the use of students, a low-priced di ssecting 
mieroscope, which, from its portability and general convenience, may be highly 
recommended as a serviceable pocket companion to botanists. 
