No. 2, September, 1921] MORPHOLOGY AND TAXONOMY, FUNGI, ETC. 139 



881. Dana, B. F. Two new species of Sclerotinia. [Abstract.] Phytopathology 11: 

 106. 1921. — Sclerotinia demissn n. sp. attacks leaves, twigs and fruits of Prunus virginiana. 

 Sclerotinia gregaria n. sp. attacks the leaves and fruits of Amclanchier cusickii. — B. B. 

 Higgins. 



882, DoiDGE, Ethel IM. Some changes in nomenclature of South African Ascomycetes. 

 South African Jour. Nat. Hist. 2: 39^1. 1920. — xV number of changes in the nomenclature 

 of South African Ascomycetes have been rendered necessary by the appearance of the recent 

 work of Theissen and Sydow. Thirteen new combinations resulting from the transfer of spe- 

 cies from Meliola to Irene are here given. — E. M. Doidge. 



8S3. Gerhardt, Karl. tJber das Auftreten der Schlauchfriichte von Oidium Tuckeri 

 am Weinstock. [On the appearance of ascocarps of Oidium Tuckeri on grapevines.] Ber. 

 Deutsch. Bot. Ges. 38: 15G-15S. 1920. — In October and November, 1919, the author found 

 perithecia of Uncinula necator on old plants of grape in the Jena botanical garden. This is 

 only the 2nd reported occurrence of the ascocarps in Germany. The author describes the 

 perithecia and reports attempts, as yet unsuccessful, to germinate the ascospores. He attrib- 

 utes the production of the perithecia to the unusually abrupt fall in temperature in the vi- 

 cinity of Jena in the middle of October 1919. Their absence from green leaves, relative scar- 

 city on red leaves, and abundance on yellow fallen leaves in which no anthocyanin had been 

 formed suggested a disturbance of transfer of material in the leaf resulting from the sudden 

 depression of the temperature as the cause of the production of the ascocarps. — R. M. Holman. 



884. HoHNEL, Franz von. tJber Pseudopeziza, Pyrenopeziza, Ephelina, und Spilopodia. 

 [On Pseudopeziza, Pyrenopeziza, EpheUna, and Spilopodia.] Ber. Deutsch. Bot. Ges. 38: 

 96-101. 1920. — The author discusses the synonymy and relationships of these genera. He 

 considers the genus Pyrenopeziza to be made up in part of overwintered forms of Pseudo- 

 peziza. The remaining species of the genus Pyrenopeziza he assigns to the genus Excipula. — 

 R. M. Holman. 



885. HoHNEL, Franz von. tJber die Gattung Phlyctaena Desmazieres. [On the genus 

 Phlyctaena Desmazieres.] Ber. Deutsch. Bot. Ges. 38: 102-110. 1920.— The author states 

 that 2 fungi, in his opinion generically distinct, were described as the type of this genus under 

 the name Phlyctaena vagahunda. One of these grew on the stem of Psoralea bituminosa, 

 the other on that of Tamus communis. Inasmuch as the fungus on Tamus has typical pycni- 

 dia, in contradiction to Desmazieres' generic description, and since the fungus on Psoralea 

 was described as having false perithecia formed only by the blackened epidermis, the writer 

 concludes that the fungus on Psoralea is the type species of the genus. The form growing 

 upon Tamus he considers identical with Ascochyta caulium Libert, and concludes on the basis 

 of characteristics indicating its close affinity to Rhabdospora that it must be called R. caulium 

 (Lib.) v. H., at least until a critical investigation of the genus Rhabdospora is undertaken. 

 The synonymy of other published species of Phlyctaena is also discussed. — R. M. Holman. 



886. HoHNEL, Franz von. tJber Botryosphaeria, Epiphyma und Pilgeriella. [On Bot- 

 ryosphaeria, Epiphj'ma, and Pilgeriella.] Ber. Deutsch. Bot. Ges. 38: 111-116. 1920.— The 

 author discusses the synonymy and relationships of a number of species of the genera named. 

 He states that Gibberella Sacc. 1877 is the same as Botryosphaeria Ces. et de Not. 1863, that 

 according to the laws of nomenclature the species of Gibberella must be placed in Botryosphae- 

 ria Ces. et de Not., and that for the species of the genus Botryosphaeria Sacc. the name Mel- 

 anovs Nitschke 18G9 must be employed. The author denies the sharp distinction which 

 Theissen assumes in the development of the nucleus of the Pseudosphaeriaceae, Sphaeriales, 

 and Dothideales. Botryosphaeria Sacc. 1877 he considers a genus of the Dothideaceae. 

 Botryosphaeria Dothidea (Moug.) Ces. et de Not. he places in Catacauma as C. Dothidea 

 (Moug.) V. H. The author's Botryosphaeria Molluginis, which was placed by Theissen and 

 Sydow (Ann. Mycologici 13: 297. 1915) in the genus Amerodothis, he now, on the basis of 

 further study, places in Dothidella as D. Periclymeni (Fckl.) var. Molluginis v. H. or Dothi- 



