234 Bryoph5^ten. — Pteridophyten.. 



vorkommen: Pottia conica, Didyntodon validus, Funaria dentata, 

 Bvyum comense; nur in Böhmen (nicht in Mähren) kommen vor: 

 Hymenostojnum rostellatum, Trichostonmm hrevifoliiim, T. Bamber- 

 geri, T. tenue, Barhula sinuosa, Crossidiiim griseum, Tortida atrovi- 

 rens, Leskea tectorum, Eurhynchmm pumüiim, E. curvisetuni, E. 

 rotundijolium. — Das „Gesenke" hat folgende für das Riese nge- 

 birge charakteristische Pflanzen nicht: Sphagnutn Lindhergii , 

 Pedicidaris sudetica, Saxijraga nivalis, Rubus Chajnaeriiortts. Dafür 

 bringt das „Gesenke" in Mähren Arten, für welche dieser Gebirgs- 

 stock die westliche Grenze der Verbreitung bildet: Cystopteris sude- 

 tica, Crepis sibirica, ScrophiUaria Scopolii, Conioselinum Fischeri. Das 

 Gesenke war stets gletscherfrei. Bezüglich der Lebermoose lässt 

 sich kurz folgendes berichten: Im Riesen gebirge wachsen ZJ/^'y«//« 

 rupestris, Mörckia Flotowiana, M. norvegica, Sarcoscyphus capillaris, 

 Spriicei, subalpina, Jüngermannia Wenselii und julacea, welche dem 

 Gesenke fehlen; viele andere Arten sind beiden Gebirgszügen ge- 

 meinsam. Auf dem Gesenke kommen Vertreter der Gattungen An- 

 dreaea, Splachnum, Tayloria, Tetraplodon viel seltener vor als im 

 Riesengebirge. Mnium Blytii ist die einzige arktische Art 

 des Gesenkes. Grosse Sorgfalt wendet der Verfasser der Moos- 

 flora der Kalkberge. Er geht dann zu einer genaueren Erläuterung 

 der einzelnen wichtigen Moosgebiete über, wobei er das geologische 

 Substrat als Richtschnur wählt. Matouschek (Wien). 



Browne, Lady Isabel, The Phylogeny and Inter-relationships 

 of the Pteridophyta. A critical resume. (120 pp., Reprinted from 

 the New Phytologist, VII and VIII. price 2 s. 6d., Botany School 

 Cambridge, 1909.) 



The articles that have appeared under this title during 1908 are 

 now issued in book form as "New Phytologist Reprint, W. 3". The 

 book consists of a critical summary of the main results of recent 

 investigations in the Morphologj'^of the Vascular Crj^ptogams (existing 

 and fossil) with very füll literature references. It should prove of 

 value to all interested in this field. F. W. Oliver. 



Maxon, W. R., Studies of tropical American ferns, No. 1. 

 (Contr. U. S. Nat. Herb. X. 7, p. 473-508. pl. 55, 56. March 30, 



1908.) 



"In this and following papers it is the purpose of the writer to 

 present under a collective title some results of studies of tropical 

 American ferns, especially those of the West Indies, Mexico, 

 and Central America. The matter is designed to include notes on 

 some of the earlier species, corrections in nomenclature, descriptions 

 of new species, and, when material Warrants, revisions of certain 

 genera and smaller groups of species." 



Following this there is presented a brief Statement of the diffi- 

 culties underlying the work of determining with exactness many of 

 the early historic species. In this connection the importance of fur- 

 ther field work in several regions is briefly touched upon. 



The following subjects are treated : 



I. Aspleniuin salicifolium and confused species. — The A. salici- 

 folium of Linnaeus, founded upon Plumier's plate 60, repre- 

 senting a plant found at "several places in the French Islands of 

 America," is the plant known usually (at least in so faras the West 



