112 Enmycetes. 



sections there is good reason to believe that fusion occurs between 

 the dilated cells. One cell is apparently devoid of a nucleus, and 

 the other contains two, or a Single nucleus of twice the normal 

 size. The fusion-nucleus divides and the ascogonium becomes sep- 

 tate, each cell being multinucleate and giving rise to ascogenous 

 hyphae. The development of the asci and perithecia are traced, 

 and a füll account is given of spore-ejection and germination. 



A. D. Cotton. 



Grove, W. B., The Evolution of the Higher Urediueae. (New 

 Phyt. XII. p. 89—106. 1913.) 



The Uredineae are regarded as developing from a form of 

 Puccinia which possessed only one spore-form and was restricted 

 either to one host or to a series of closely allied hosts. Of the pre- 

 sent known genera Endophyllum approaches most nearly to this 

 primitive Pucciniacea From such a form cases like P. Tragopogi 

 *and Uromyces Cunninghamianus arose "where the aecidiospore ger- 

 minated conidially and produced on its mycelium teleutospores 

 which germinated basidially". From this to the intercalation of 

 uredospores is but a small step. So far the fungus is considered to 

 be autoecious and from such, both Brachy- and Micro-forms might 

 easily arise by the dropping out of some of the spore forms. Ac- 

 cording to this hypothesis heteroecious species must have arisen 

 by a sudden mutation. 



The very persistence of the occurence of the useless spermatia 

 in so many species is a proof of their deep underlying primitiveness, 

 and no hypothesis of the evolution of the higher Uredineae is tena- 

 ble which does not Start with the existence of them and of the 

 correlative female cells. E. J. Welsford. 



Hollos, L., Magyarorszäg Gasteromycetäi-hoz. [Zu den 

 „Gaster omyceten Ungarns"]. (Mag, bot. lapok. XII. 6/7. p. 

 188—200. 2 Doppeltafeln. Budapest 1913.) 



1) Eine nochmalige Durchsicht der ungarischen Xylo Stoma- Arten 

 ergab folgendes: Tylostonia Mollerianimi Eres, et Roumg ist von 

 T. matnmosum verschieden (ein anderes Capillitium). Tyl. gra- 

 nulosum. Lev. (aus Tirol) ist die gleiche Art wie Tyl. campestre 

 Morg. (aus Nebraska). Die ersten 5 der in „Gasteromyces Hunga- 

 riae" des Verf., Taf. XI. f. 21, abgebildeten Exemplare gehören zu 

 Tyl. volvulatum Bors., das 6. und die auf Taf. XXIX. fig. 13 — 14 ab- 

 gebildeten zu Tyl. Schweinfurthii Bres. Die auf Taf. XI. fig. 17 ab- 

 gebildeten 2 Exemplare müssen zu Tyl. Kansense Peck gestellt 

 werden. 



2) Trichaster melanocephalus Czern. ist nur eine abnorme Form 

 von Geaster triplex Jungh., bei der das das Endoperidium vom 

 Grunde abgelöst und zerschlissen ist, da es mit dem durch Regen 

 geförderten Wuchs der übrigen Teile nicht Schritt halten konnte. 



3) Geaster hungaricus HoU. ist eine gute Art und keine kleine 

 Form des Geaster ßoriformis Vitt. (genaue Diagnose). Geaster nanus 

 Pers. 1809 hat die Priorität vor G. Schmideli Vitt. (1842). 



Die Doppeltafeln zeigen Capillitiumfäden verschiedener, auch 

 im Referate nicht besprochener Arten. Matouschek (Wien). 



Krause, F., Ueber das Auftreten von Pilzen in Kartof- 



