216 University of California Puhlications in Botany [Vol. 6 



JERVIS 



Jervis lies closest to James, but is also near Indefatigable and 

 Albemarle. Its proximity to the two former is reflected by the figures 

 in Table A*^! — twenty-nine and thirty-two — but the number for Albe- 

 marle species is unexpectedly low (thirty-two) and substantially 

 equalled by the numbers of distant Charles and James. Exactly the 

 same status holds for Duncan, the nearest small island to Jervis. 



TOWER 



This smallest and poorest of the northern islands shows a special 

 affinity with Abingdon, 13 per cent of whose species it possesses as 

 against, for instance, 6 of James', 5 of Albemarle's, 6 of Chatham's, 

 and 9 of smaller Duncan's. 



The southeastern influence is perhaps slightly stronger on Tower 

 than that of the central and western groups. Compare Albemarle 

 fifteen with Charles sixteen and Chatham eighteen ; Duncan nine and 

 Narborough eight, with Hood thirteen ; Seymour eight, Barringlon ten, 

 and Jervis seven, with Gardner eleven. 



BRATTLE 



The little island of Brattle lies off that shore of Albemarle which 

 faces Charles. Only sixteen plants have been reported from it. Con- 

 sidering the proximity of Brattle to Albemarle, it is significant that 

 it possesses only ten species of that large island but twelve and 

 thirteen from Charles and Chatham. The number shared with Hood 

 is above the average. Evidently the southeastern influence has oper- 

 ated much as in the case of Jervis and Duncan, which also lie not far 

 east of Albemarle. 



WENMAN AND CULPEPPER 



These two islets lie far to the north of the main Galapagos archipel- 

 ago, and must not be confounded with what I have heretofore called 

 the northern group, consisting of Abingdon, Bindloe, and Tower. 

 Their flora is so monotonous that little inference can be drawn from 

 the few species, out of their total fourteen and seven, which they share 

 with the other islands. It does appear, however, that the southeastern 

 group is again represented a little more than proportionately, although 

 it is the most remote; and that on the other hand the three northern 



