CRTPTOGAMIA. 475 



size, being about 0.3 mm. long by 0.1. mm. wide. The single 

 species of this genus occurs in Southern Lapland, Arctic Ame- 

 rica, and in Switzerland, on the bark of trees. 



Circa historiam Lichenographije observatiuncula. Scripsit 



W. Nylander. Eeg. Fl. 1861. p. 513. 

 Conspectus Squamariarum. Exposuit breviter W. Nylander. 



Eeg. Fl. 1861. p. 716. 

 NoBMAN.— Descriptio speciei novae Lichenis, quam detexit et sub 



nomine Tholurna dismnilis proponit J. M. ^Norman. Eeg. Fl. 



1861. p. 409. 

 Stizenbeegeb.— Anzia, eine neue Flechten-gattimg, aufgestellt von 



Dr. Ernst Stizenberger. Eeg. Fl. 1861, p. 390. 

 Aetinopelte, eine neue Flechten-Sippe beschrieben von Dr. 



Ernst Stizenberger. Eegensburg Flora, 1861. p. 1. 

 Tbevisan. — TJeber Atestia, eine neue gattung der Eamalineen aus 



Mittel- Amerika, Von Victor Gr. Trevisan, K. K. wirkKchem 



Kammerer. Eeg. Fl. 1861. p. 17. 

 Synopsis generum Trypethelinarum, auctore V. Trevisan. 



Eeg. Fl. 1861. p. 17. 



4. Fungi. 



Apzelitjs. — Eeliquise Afzelianse, sistentes Icones Fungorum, quos 

 in Guinea collegit et in aere incisas excudi curavit Adamus Aize- 

 lius. Interpretatur E. Fbies. 4to. TJpsaliae, 1860. 



This work consists of 12 plates, printed in brown, and 4 pages 

 of text, giving definitions, &c. of the 30 species figured. 



Eail. — Mykologische Studien besonders iiber die Entwicklung der 

 Sphceria typhina Pers. von Dr. Th. Bail. Nov. Act. Vol. xxix. 



Dr. Bail states that Sph. typhina is strictly epiphytal. He 

 describes the perithecia as produced by the germination and 

 growth of the conidia after the latter have fallen upon the under- 

 lying stratum or conidial layer ; and he suggests, as a probability, 

 that the perithecia in Ehytisma, Polystigma, Hypoxylon, Nectria 

 and other allied genera are produced by the germination of the 

 conidia. He discusses the nature of the so-called spermatia of 

 fungi in general, and contends that they are not distinct from 

 conidia. As far as he could count, each ascus contains four 

 sporidia,* each sporidum being divided by transverse septa into 

 numerous cells. The systematic position of the plant Dr. Bail 

 considers to be in the genus Claviceps. At the end of the paper 

 are a few remarks upon the early state of Poronia punctata. 



Baby, De. — Die gegenwartig herrschende Kartoffelkrankheit, ihre 

 Ursache und ihre Verhiitung. Eine pflanzen-physiologische Un- 

 tersuchung in allgemein verstandlicher Form dargestellt von 

 Dr. A. de Bary, Prof. d. Bot. zu Freiburg, i. B. Mit. 1 Stein- 



* The figures (PI. 2, figs. 8 and 9) appear inconsistent with this supposition. 

 N. H, li.— 1862. 2 K 



