Genus Statice as represented at Blakeney Point . /. 263 
leaved lateral plants, except in connexion with the exit of a root-trace. In the 
plants from the muddy lows the beginning of a year’s growth is marked by 
the formation of wood parenchyma instead of fibres, so that the annual rings 
are sharply marked off from one another. 
In the plants cultivated from seed the xylem shows abundance of 
parenchyma and very few fibres. 
Sclerenchyma and sclereides. The difference in the development of 
the sclerenchyma ring and the sclereide groups has already been referred to, 
and is briefly summarized in Table II. 
Table II. Distribution of the Sclerenchyma Ring and Sclereides in the Various Forms of 
S. binervosa. 
Form. Plant. 
Tall 
Dwarf 
? Hybrid 
Main bank 
Narrow-leaved ’ lateral 
Muddy low 
Sandy-mud low 
k Culture from seed 
‘ Broad-leaved ’ lateral 
Sclerenchyma ring. 
Broad and almost continuous 
Sclereide group. 
Very numerous 
?? 9 ? 
Narrow and almost continuous 
Narrow and discontinuous 
A few isolated fibres only 
Broad and continuous, but not 
quite so broad as in lateral 
form 
•>1 >> 
Not numerous 
Few and small 
Very few 
Numerous 
Vessels. An examination of the vessels in the roots of the various 
forms shows in every case a gradual increase in size from the primary 
elements through each successive annual ring (Table III) ; moreover, in 
those of the Blakeney forms, in which absorption is presumably more 
difficult, there is a diminution in the size of the vessels : this is in agreement 
with the observations of Starr already quoted. The diameter of the vessels 
in the plants cultivated from seed does not fall into line with the other 
measurements, and it seems difficult to explain the apparent anomaly. 
Table III. Average Internal Diameter in mm. of the Largest Vessels in the Root and Stem of 
the Various Forms of V. binervosa. 
Dwarf form. 
Xylem. 
? Hybrid form. 
Broad-leaved. 
Tall form. 
Alain bank. 
Narrow- 
leaved. 
Sandy. 
Muddy. 
Culture. 
^Primary 
o*oi 2 
0*010 
0*010 
0*006 
0*006 
0*006 
Secondary : 
Annual ring i 
0*024 
0*018 
0*014 
0*018 
0*008 
0*010 
1 „ „ 2 
0*032 
0*026 
0*020 
0*020 
0*01 2 
0*014 
I n > > 3 
°*°44 
0*030 
0*024 
0*024 
0*016 
— 
V » }} 4 
— 
0*036 
0*032 
0*028 
0*020 

) Primary 
0*006 
o-ooS 
0*006 
0*008 
0*006 
0*006 
1 Secondary 
0*020 
0*020 
0*016 
0*020 
0*012 
0*010 
3- 
The Stem. 
The stem of S. binervosa is very short and entirely subterranean, 
with a much branched crown, each branch bearing a rosette at the 
ground level. The first inflorescence is terminal and thus brings to an 
end the growing axis. Growth in the following season is continued by 
one or more buds developed in the axils of the apical leaves of the 
T 2 
