2 &2 de Froine . — Genus Statice as represented at Blakeney Point . /. 
forms of 5. binervosa are considered ; they are of a similar nature to those 
present in the root and are due to similar causes. 
6. Leaf (pp. 256-73 and 
The structure of the leaf is bifacial in .S'. bellidifolia and in the hybrid 
S. binervosa , but is isobilateral in all the other forms. Differences occur in 
the abundance of the sclereides present ; they are numerous in the typical 
binervosa , absent except in the leaf sheath in bellidifolia , and few in the 
? hybrid. The effects of the various habitats on their production is ex- 
amined, and the influence of culture under favourable conditions in 
diminishing mechanical tissue (as in the root and. stem also) is pointed out. 
The effect of culture on the development of the intercellular space 
system, and on the production of cuticle, indicates a definite reaction of 
the plants to the external conditions. The degree of development of the 
cuticle, both internal and external, appears to depend on the water relations 
of the habitat in all the forms examined. 
The stomata have three subsidiary cells in .S', binervosa and four in 
S. bellidifolia ; they occur on both surfaces of the leaf, and details of their 
distribution are given. 
7. Inflorescence axis (pp. 27 3-6 and 279). 
An inner series of large, collateral bundles and an outer series of 
small cortical ones occur in the axis. The inner bundles are embedded 
in lignified fibres and are surrounded by a zone of sclereides. The cor- 
tical bundles lie at the margin of a narrow assimilating zone, at the outer 
edge of which is a palisade layer of one (dwarf forms of binervosa) or 
two cells (? hybrid binervosa and bellidifolia). In the sterile branches of 
bellidifolia and the ? hybrid binervosa the palisade cells become deeper and 
the number of layers is increased. 
The proportion of stereome diminishes in the smaller axes. 
The surface of the inflorescence axis is smooth in .S', binervosa , 
slightly rough in the ? hybrid form, and distinctly scabrid in 5 . bellidi- 
folia ; the roughness is due to the enlargement of the cells surrounding 
the Mettenian glands. 
8. The anatomical characters of the ? hybrid and its two parent forms 
are summarized (pp. 279-80). 
9. The floral morphology of 5 . binervosa and the ? hybrid form, and 
of S. bellidifolia , is fully described (pp. 246-50). 1 
It is a great pleasure to acknowledge my indebtedness to Professor 
F. W. Oliver, both for the help he has given me in connexion with the 
experiments and also for specimens of plants collected at various times. 2 
1 The author is entirely indebted to Dr. E. J. Salisbury for this section of the paper. 
2 The investigation was partly carried out in the Ecological Laboratory at Blakeney Boint, 
Norfolk. * 
