308 Pteridophyten. — Floristik, Geographie, S3'-stemati ketc. 



constitutes a reduction series. It is suggested that thoughi Lepido- 

 dendron may be more nearly allied to Isoetes, yet it may be com- 

 paratively closely related to Lycopodhim; it is held that Spencerites 

 may be the first of a long reduction series leading from Lepidoden- 

 dron to Lycopodhim. It is also thought that if such a series ofrelation- 

 ships were proved the stalk of the sporophyll of Lepidodendron, 

 Spencerites and Lycopodium would be axial and comparable to the 

 similar structures in Calamostachys, Palaeostachya, Psilotutn and 

 Sphenophyllum — would, in fact, be a sporangiferous branch, with 

 which a leaf had become, probably secondarily, associated. 



Isabel Browne (London). 



Brown Stewardson and Mrs. Ch. Schäfifer. Alpine Flora of 

 the Canadian Rocky Mountains. (G. P. Putnam's Sons. New 

 York & London. S«. XXXIX, 353 pp. 80 plates with 150 figs. 1907.) 



This is meant as a guide to the flora of the Canadian Rockies 

 and Selkirks, especially the portions traversed by the Canadian 

 Pacific Railway between Banff and Glacier. It contains descrip- 

 tions in English of about 500 species, representing a selection of 

 the more striking elements of the flora, with keys to the families 

 and genera. The Grasses, Sedges, Willows and other families which 

 did not seem „of sufificient general interest to Warrant the space re- 

 quired for their intelligent treatment" are omitted. On the other 

 hand a number of ferns and fern allies are included. The sequence 

 of the families is that of Engler's System. The illustrations are 

 partly Photographie reproductions from life, partlj'^ colour photo- 

 graphs from water-colour drawings by Mrs. Schäffer. There is a 

 list of illustrations, but the text is without references to the plates 

 and figures. Many of the illustrations are of plants not hitherto 

 figured. A glossary is appended. Otto Stapf (Kew). 



Figert, E., Mitteilungen über neue Rubi in Schlesien. 

 (85. Jahresb. Schles. Ges. f. vaterl. Kultur [1907]. IL Abt., Zool.- 

 bot. Sektion, p. 63—65. 1908.) 



Verf. beschreibt drei neue von ihm in Schlesien beobachtete 

 Rubus-Arien als R. multißorus (aus der Gruppe der Vestiti, gefun- 

 den an einem Waldrande bei Tannhausen in der Gegend von 

 Charlottenbrunn), R. flavicaulis (zu den abweichenden Formen 

 der Suberecti gehörig, gefunden an Waldrändern der Hessberge 

 im Kreise Jauer) und R. tenuis (aus der Gruppe der Glandidosi, 

 verbreitet im Waldenburger Bergland). 



W. Wangerin (Burg bei Magdeburg). 



Gross, L., Zur Flora des Maintals. (Mitt. Bad. Landesver. f. 

 Naturk. W. 226—220. p. 202-210 und 213—234. 1908.) 



Die umfangreiche Arbeit enthält in systematischer Aufzählung 

 eine grosse Fülle von neuem floristischen Material (neue Standorte 

 und neue Formen) aus dem Gebiet der Flora des Maintals, das 

 Verf. in den Jahren 1903 — 1906 einer gründlichen floristischen Durch- 

 forschung unterzog. Zu einer Reihe von Arten, bemerkenswerten 

 abweichenden Formen und Bastarden werden kritische Bemerkun- 

 gen hinzugefügt, die sich auf die gegenseitige Abgrenzung kritischer 

 Formenkreise, auf die Entstehung und Häufigkeit von Bastarden 



