176 Floristik, Geographie, Systematik etc. 



Gaultheria intermedia n. sp.; diese zeigt Aehnlichkeit mit G. 

 leucocarpa Bl. und G. fvagrantissima Wall. var. /)w«cto?rt J.J. S., und 

 es ist ziemlich wahrscheinlich, dass die Pflanze eine natürliche 

 Hybride ist zwischen diesen beiden. Sumatra oder Java. 



Vacciniimi besagiense JJ. S.; Sumatra, Forbes 2051; nahe ver- 

 wandt mit V. timorense Fawc; jedoch verschieden durch einge- 

 drückte Blätter, kürzere Blütenknospen, am Rande nicht drüsige 

 Kelchabschnitte, eine aussen kahle Korolle, einen kürzeren weniger 

 behaarten Griffel. 



Vaccinium longitubulosum n. sp. (F. exaristatum Herb. Kew., 

 nee Kurz); Siam, Kerr N^ 541; von V. exaristatum Kurz verschie- 

 den durch einen kahlen Kelch und Fruchtknoten, zwei sehr kurze 

 Sporne auf der Rückenseite der Anthere und sehr lange Antheren- 

 röhren. 



Vaccinium. myrtoides, Miq,, neue Beschreibung; und var. cele- 

 bicum. n. var.; Celebes; vom typ verschieden durch breitere, an- 

 fangs an der Spitze nicht gewimperte Blätter, längere, mehrblütige 

 Blütenstände, grössere Blüten. 



Vaccinium. lucidum Miq. var. pumilum n. var.; Sumatra, Bec- 

 cari 77, 138; charakterisiert durch kleinere Dimensionen, zusam- 

 mengehäufte Blätter und einen sehr dünnen Pedunculus. 



Jongmans. 



Willis, J. C, The Sources and Distribution of the New 

 Zealand Flora, with a Reply to Criticism. (Ann. Bot. 

 XXXII. p. 339—367. 7 text figs. 1 map. 1918.) 



This paper consists largely of a reply to criticisms of the 'Age 

 and Area' hypothesis brought forward by Sinnott (Ann. Bot. 

 XXXI, 1917, p. 209 and Science. XLVI, 1917, p. 457). Incidentally 

 new facts are brought forward regarding the distribution of plants 

 in New Zealand. To make the meaning of the author's tables of 

 figures clearer to those who are not familiär with the method of 

 handling these problems by aid of statistics, diagrams are given 

 showing the ränge in New Zealand of the species o( Ranimculus 

 and other genera. Their resemblance to the rings made by thro- 

 v/ing a stone into a pod is very clear, and is an argument against 

 any but a mechanical explanation of these ranges. The widest ränge 

 farthest, the endemics successively less. 



The figures already given for distribution in New Zealand 

 are analysed, and it is shown that 33 or more families have their 

 maximum at the far north and taper down steadih?^ to the south. 

 This goes to show that there must probabl}" have been a northern 

 land bridge reaching New Zealand from some part of Indo- 

 Malaya, and similarly there are 18 or more families which must 

 probably have reached New Zealand by a southern bridge from 

 some region abroad. The northern families are mainly trees and 

 shrubs, the southern herbs. 



Dr. Sinnott's hypothesis of swamping is considered and it is 

 shown that the evidence is confluting. 



Agnes Arber (Cambridge). 



ATasgegeben: 18 IVlärz 1919. 



Verlag vou Gustav Fischer in Jena. 

 Buchdruckerei A. W. SijtJioff in Ijeidcu. 



