Bibliographical Notices. 61 



commission. The collections of 100 and 200 species are respect- 

 ively prized at 15 florins and 30 florins; and we beg to observe, that 

 to those who do not already possess the collections of Sieber, they 

 are highly interesting, and the more so as the specimens are incom- 

 parably more beautiful and complete than the relics which are still 



on sale of Sieber's plants. 



Professor Hociistetter, 

 Dr. Steudel. 

 Esslingen by Stuttgard, Jan. 1838. 



BIBLIOGRAPHICAL NOTICES. 



Icones Fungorum hucusque cognitorum. Auctore A. C. J. Corda. 

 Pragse, 1837. 



Though the present work is not wholly destitute of the faults which 

 are chargeable against the other mycologic labours of the author, it 

 is one of very great importance. If his matter is not always correct, nor 

 his views judicious, we find much that is at least original ; and there 

 are many observations and discoveries which throw quite a new light 

 on several obscure branches of mycology. It would indeed be dif- 

 ficult to point out any work of the same size which contains so much 

 of interest. The price too is extremely moderate ; and as the specific 

 and generic characters and references to the dissections are in Latin, 

 though the remarks are in German, it is generally accessible to bota- 

 nists. It is much to be desired that the author will meet with suf- 

 ficient encouragement to enable him to continue a work which, from 

 the style in which it is got up, must necessarily involve a consider- 

 ably outlay, and even more brilliant discoveries may be confidently 

 expected in other branches of the science. At present there are few 

 good figures of the fruit-bearing organs of fungi ; and, from our own 

 e'xperience, we can bear witness that much remains to be done. 

 Mycologists have till lately been in possession of instruments which 

 can show only a part of the structure, and many of the more minute 

 species have been very imperfectly investigated, nor have the differ- 

 ences, which exist at different periods of growth, received sufficient 

 attention. Indeed the fructification of the typical group of fungi has 

 been altogether misunderstood. 



Among the points of most interest, we shall note the following, 

 taken in the order in which they occur. 



The author asserts that Trichothccium roseum is a parasite on hy- 

 phomycetous fungi, or Mycelia. Trichothecium domesticum is said 

 to occur on the hyphasma of Mucor Mucedo. «This hint is well worth 



