188 THE JOURNAL OF BOTANY 
safficientty known to make a monograph of the genus psale® 
e 
validity ” of P. Saori ; but the perfect fruit strongly favours its 
segregation. P. s (curvifolius) “ is no one definite form, but 
is an aggregate of prams distinct dey ieee all of which agree in 
having P. perfoliatus as one parent.” This points to the need of 
working out the various plants wrtilal have been so named ; 
have guthered ‘‘nitens” several times in Scotland, and believe 
the whole series to be P. heterophyllus x perfoliatus, which were, 
in almost every case, the only possible factors. The name 
P. Zizii Mert. & Koch has been retained, “as that of angustifolius 
has, according to the Americans, been pr eviously used i =i sad 
grounds, x P. salignus ae is made to displace x P. decipiens 
Nolte var. aalaoiyoleal Ar. Benn. a eat arte Se Under 
P. zosterefolius it is noted t co specimens are 
generally longer-leaved than nw Bngish, A more acute.” 
P. Sturrockii (a most lovely plant, when fresh) retains its rank as 
a full species; it certainly looks quite different from any puszllus 
forms that I have seen. By aslip, P. oe te been credited 
to eighty-eight ‘ counties,’ ie tead of vice-counti P. marinus 
L. (non Huds.) ce otes a iat more familiar wilt the name of 
FP. Le dali Nol 
There are a oe provoking, though ee ehiecencomern 
errors, whieh should have been rectifie ut the intrinsic me 
of the book is extremely high, and it should dreatly help cee 
abroad, as well as at home. Pies © Wiese 
The oobeges epee Report of the Watson geen Exchange 
acd —1914. Cambridge: J. Webb & Co., Alexandra 
= “10. 
few plants which make up the flora of this group of islands is 
nowhe i 
desirable that both the “pire and specimens stating them 
should be represented in the chief Continental centre 
