Floristik, Geographie, Systematik etc. 
495 
only in some respects from the first edition. Naturally the treatment 
and the nomenclature of the species have been altered according to 
the present stage of knowledge; further the additions of later years 
to the flora of Den mark have been taken into consideration. But 
the main difference between this new and the first edition is, that 
the biological type, in Raunkiaer’s sense (see Bot. Centr.bl., vol. 
101, p. 361), is indicated under the description of each species. 
The genus Taraxacum contains 20 species, of which the follo- 
wing ones are new [only described in Danish]: T. purpureum, T. 
planum, T. hamatum, T. litorale, T. platyglossum, T. simile and 
T. fulvum. C. H. Osten feld. 
Rendle, A. B., General report upon the botanical results 
of the third Tanganyika expedition, conducted by Dr. 
W. A. Cunnington, 1904 and 190 5. (Journ. Linn. Soc. Vol. 
78, N°. 263, p. 18—28. 1907.) 
This is an account of the plants collected by Dr. W. A. Cun¬ 
nington in the three great Central African lakes in 1904 and 1905. 
Dr. Cunnington’s principal object was the exploration of Lake 
Tanganyika in order to ascertain whether there was any evidence 
of marine affinity in its flora and fauna. The collections included 
about 30 species of Phanerogams, 4 ferns, 2 Characeae and over 400 
species and varieties of small freshwater Algae and Peridineae. The 
phanerogams and ferns belong mostly to widely distributed species 
and throw no light “on any theory as to a difference of origin or 
conditions, present or past, in the case of Tanganyika as com- 
pared with the other two lakes.” The discovery of Myriophyllum 
spicatum in the lakes Nyasa and Tanganyika adds this genus 
to the flora of Tropical Africa. The algae are not included as 
they form the subiect of a separate paper by Mr. West. 
Otto Stapf. 
Sehmid, H., Wodurch unterscheidet sich die Alpenflora d es 
Kronberggebietes von derjenigen des Häbrisgebiet es? 
Vortrag. (Jahrbuch der St. Galler Naturwiss. Ges. für das Ver¬ 
einsjahr 1906. p. 126—150. St Gallen 1907.) 
Verf. machte in den Jahren 1905 und 1906 verschiedene Excur- 
sionen in das Kronberggebiet (St. Gallen) und berichtet hier 
über seine und von früheren Autoren gemachte Funde an alpinen 
Arten (126 Spezies). Aus ihrer Verbreitung „ergiebt sich die Tat¬ 
sache, dass diese nicht allein oder in erster Linie vom Winde ab¬ 
hängig ist, sondern dass andere Faktoren (klimatische Verhältnisse, 
Bodenbeschaffenheit) wohl noch einen grösseren Einfluss ausüben.” 
Das Verzeichnis bildet eine Ergänzung von Wartmann und 
Schiatters: Kritische Uebersicht über die Gefässpflanzen der Kan¬ 
tone St. Gallen und Appenzell. 
H. Brockmann—Jerosch (Zürich). 
Tropea, C., La variazione della „ Bellis perennis ” L. in rap- 
porto alle sue condizioni d’esistenza. (Malpighia. vol. XXI. 
p. 276—283. 1907.) 
Apres avoir rappele les resultats des travaux de Ludwig et 
de Helguero sur la Variation du nombre des fleurs ligulöes dans le 
Bellis perennis L. et avoir fait remarquer que ces auteurs n’ontconsi- 
