Floristik und Systematik der Phanerogamen. 035 



C. comata, C. jejuna, C. uplandia, C. callosa, C. cestrica, C. augusta, 

 C. insueta, C. alacris, C. dediicta, C. fretzii, C scabriusctila, C. äelicafa, 

 C. lata, C. collinsiana, C. piitnUa, C. firma, C. ampla, C. condensa, C. 

 moyeriana, C. saturata, C. longipetiolata, C. insolita, C. modica, C. digna, 

 C. evansiana, C. ahjecta, C. bartoniana, C. neo-canbyi, C. saxatilis. C. 

 definita, C. painteriaria, C.fulva, C.pygtnaea, C. infera, C. Schweinif.?iana, 

 C. darlingtoniana. C. radiosa, C. micrantha, C. chadsfordiana. 



Trelease. 



Sargent, C. S., Manual of thetrees of North America 

 exclusive of Mexico. (Boston and New York: HoLighton, 

 Mifflin & Co. 1905 8vo. p. XXIII + 82b, ff. 642^ with 

 map showing the principal tree regions of North America.) 



A Synopsis of the families of plants represented in tlie Manual is 

 followed by an analytical key to the same, based on their ieaf characters, 

 and ihe work closes with a glossary of technical terms and a füll index. 

 The bulk of the work is occupied by a systematic account, in which the 

 sequence is that of Engler «SiPrantl's „Die Natürlichen Pfianzen- 

 familien", and the nomenciature, aside from rectifications, that of Sar- 

 gent's „Silva of North America". Descriptions and distributional data 

 are unusually ample, and each family and genus is provided with a 

 differentia! key to the species, which are simply but well figured after 

 drawings by C. E. Faxon, the Illustrator of the „Silva" by the same 

 author. 



In addition to the species included in the „Silva", a few previously 

 described are included in this manual, a, few necessary name-changes 

 have been made, and in the genus Crataegus, of 132 species, and which 

 the author states is still incomplete, eight new species have been de- 

 scribed. The foüowing new nanies are noted: Yucca Faxon iana (Sa- 

 muela Faxoniana Trelease), Sorbus Americana decora (Pyrns Americana 

 decora Sargent), Prunus integrifolia {P. ilicifolia integrifolia Sudworth). 

 Crataegus verruculosa, C. ovata, C mitis, C. depilis, C. Neo-Londinensis, 

 C. delecta, C. Eamesi and C. Hudsonica. The total number of arbores- 

 cent forms recognized is 64ö, of which all but 19 are accorded speciüc 

 rank and horticultural, minor, varieties being ignored or mentioned 

 without name. Their distribution by groups is: Gymnosperms, SS species 

 and 3 varieties; Angiosperms, 539 species and Ib varieties, composed 

 of monocotyledons^ 19 species, apetalous dicotyiedons. 140 species and 

 1 variety, polypetalous dicotyiedons, 319 species and 14 varieties^ gamo- 

 petalous dicotyiedons, 61 species and 1 variety. Trelease. 



Schiffner, V., Vegetationsverhältnisse der tropischen 



Hochgebirgsregionen. (Mittheil, des naturw. Ver. an 



der Universität Wien. Jg. 1905. p. 21.) 



Am Pangerango auf Java kann man vier Regionen unter- 

 scheiden, die heisse (Strandvegetation und unterer Theil des Urwald- 

 gürtels bis 620 m.)^ die Regenzone (dichter Urwald mit Bretterwurzeln 

 tragenden /^/cHS-Arten, riesigen Bambusen, dicken Lianen, zahlreichen 

 Epiphyten, 620—1400 m.), die Wolkenzone (Urwald mit Rottangpalmen, 

 als Epiphyten vorwiegend Farne und Moose, zahlreiche Baumfarne, an 

 der oberen Grenze Coniferen und Freycinetia-Aritn, 1400—2500), und 

 die alpine Region (verkrüppelte Baumformen, Strauchdickicht aus Erica- 

 ceen). Auf dem Papandayan in Süd-Java beginnt das Krüppel- 

 holz schon bei 1800 m., wo das Auftreten von Nepenthes und Rubus- 

 Arten, sowie von Albizzia nutans auffällt. Auf dem Merapi auf 

 Sumatra (2800 m.) folgt auf eine schmale Urwaldzone eine bereits zur 

 alpinen Region gehörige Zone mit massenhaften /'fl//rfßr/?«s-Bäumen, an 

 die sich die hier in besonderer Pracht entwickelte alpine Strauchvege- 

 tation anschliesst. Auf dem Sin ga lang (2888 m.) auf Sumatra folgt 



