THE STUDENTS’ FLORA OF NEW ZEALAND 141 
ch group h 
ff from existing groups. He also gives a similar table of the 
species in each group, the gaps which necessarily exist being filled 
in by a ‘‘ Zwischenform”’ to denominate the lost link. The main 
difference between the grouping in these tables, and the espa 
of the genus adopted by Prof. Agardh and Madame va 
Bosse, appears to lie in ‘the importance with which Prof. Reinke 
siscervi: the (oases or absence of small gd — appendages 
m the rhizome of some species. Such as ese appendages 
ven paved & in a group by themselves, rary of = allied with 
other species which they resemble i in other poin 
‘‘ The structure of Caulerpa”’ begins with a ies introduction, 
ypes of 
assimilatory organs are represented in Caulerpa, except Marchantia, 
Riccia, Pellia, Parmelia, or any plant of that type. The structure 
of the genus is dealt with under the headings of the rhizome; the 
roots ; the assimilatory organs; growing point; differentiation of 
internal structure; adaptation in relation to variation in form ; 
reproduction. Under this last heading the author gives as his 
descended from forms which were reprodu y spores; and, if 
is view is adopted, endless questions arise which woul of 
interest did they permit of an Unfortunately, such 
speculation, and his questions, as he frankly admits, allow of no 
trustworthy answers. The pas section, ‘‘ Factors eh) the 
tu“ De 
e form,’ is divided r four heads: 
(Dominanten) and morphological ‘equilibrium 2. The eondialase 
Pane of the forms. 8. Regeneration, Heredity, Variation. 
4. Retrospect and Prospect: E 
THEL §. Barron. 
NOTICES OF BOOKS. 
Two Cononzat Foras. 
The Students’ bd bes New Zealand and the adjoining Islands. By 
THomas F.L. hn peconh Wellington, N. Z. 
Eyre & poleedine London. [1899 
The Queensland Flora. rate F. Manson hata’. F.L.S., Colonial 
Botanist of _— and. Parti. Ranuneulatea—Anaca rdiacea. 
Published under me panier of the Queensland Government. 
Brisbane. 1899. 8vo, boards, pp. xxxli, 8325, x; 12 plates. 
Price 5s. 
We ought to have noticed sooner this instalment—for, although 
no indication of the fact appears on title-page or cover, it is only 
an instalment—of the important work to which Thomas Kirk 
