Floristik u. Systematik der Phanerogamen. — Palaeontologie. 623 



lateinischer Diagnose versehene Novität ist die Festuca Wagneri Deg., 

 Thsz. et Flatt. Kümmerle (Budapest). 



Transeau, E. N., Forest Centers of Eastern North 

 America. (Am. Nat. Vol. XXXIX. p. 875—889. b fig. 

 in text. Dec. 1905.) 



In the Eastern North America there are four forest centers : 

 1. the Northeastern Conifer forest, centering in the St. Lawrence 

 basin, 2. the Deciduous forest, centering in the lower Ohio basin 

 and Piedmont plateau, 3. the Southeastern Conifer forest, centering 

 in the south Atlantic and Gulf coastal plain^ 4. the Insular Tropical 

 forest of the southern part of the Florida penin sula, centering in 

 the West 1 n d i e s. H. M. Richards (New York). 



Waisbecker, A., Uj adatoi^ Vasvärmegye flöräjahoz. 

 [Neue Beiträge zur Flora des Comitats Vas in 

 West-Ungarn.] (Magy. Bot. Lapok. Jahrg. IV. 1905. 

 p. 54 — 78. Magyarisch und deutsch.) 



Bei der Revision des Materials^ welches Verf. aus dem im Titel 

 genannten Gebiet in letzter Zeit und auch früher gesammelt hat, kam 

 Verf. auf eine Anzahl von bisher aus diesem Gebiete nicht bekannter 

 Daten und auf einige neue Formen. Die letzteren sind die folgenden: 



Phleum pratense L. d) form, protuberans ; €) form, monstrosae: 1. f) 

 proliferum , 2. f. furcatum ; Agrostis canina L. g) var. setaceiformis 

 (= var. caespitosa Waisb. in Oest. bot. Zeitschr., 1899, 66), h) var. mi- 

 crantha ; Agrostis Castriferrei; Aira caespitosa L. f) var. compacta; 

 Danthonia provincialis DC. b) var. elata; Sesleria coerulea Ard. var. 

 iiliginosa Op. b) f. micrantha ; Cynosurus cristatus L. b) form, gracilis ; 

 Bromiis racemosus L. b) var. teniiis (Br. hordaceus L. var. leptostachys 

 Waisb. in Magy. bot. Lapok, 1904, p. 105 non Pers.) ; Brachypodium 

 pinnatum L. e) form, glabrescens ; Carex psendodiandra; C. praecox 

 Schreb. c) form, cladostachya, C. tomenfosa L. b) form, pallida, c) form. 

 approximata, e) form, laxa, a) form, refructa, e) form, pedunculata ; C. 

 montana L. b) rigida, c) form, bifurcata; C. Fritschii, b^ form, margi- 

 nata ; C. Ginsiensis (C. montana X piluUfera, C. Fritschii Waisb. var. 

 oxystachya in Oest. bot. Zeitschr. 1897, 5); C. ornithopoda Willd. b) 

 form, major; C. Castriferrei (C. perornithopoday, digitata) ; C. vesicaria 

 L. c) var. rostrataeformis ; C. hirta L. b) var. aqiiatica, e) form, nana; 

 Heleocharis palustris L. d) var. major Sonder lusus distachya ; Scirpus 

 Holoschoenus L. d) form, monoccphalus ; Scirpus compressus L. d) typi- 

 cus; Eriophorum latifolium Hoppe b) form, perlanatum; Senecio crispa- 

 tus DC. b) form, ramosus ; Teucrium Scordium L. b) form, nanum. 



Kümmerle (Budapest). 



Barron, T., On the age of theGebel Ahmar Sands and 

 Sandstone, the petrified Forest, and the asso- 

 ciated Zarvas between Cairo and Suez. (Geolog. 

 Mag. N. S. Vol. II. p. 58—62. Dec. 5. 1905.) 



This paper contains a discussion on the much disputed 

 age oi the „Petrified Forest" near Cairo. The author con- 

 cludes that the trees have not silicified in situ, but were brought 

 from a distance by a river, and deposited in a shallow lagoon 

 or estuary. The trees were not silicified immediately on depo- 

 sition, for the silica was the product of a subsequent period of 

 volcanic action. The age of the „Forest" and the beds in which 

 it occurs is Oligocene. Arber (Cambridge). 



