246 de Fraine.—The Morphology and Anatomy of the 
(e) Plants cultivated in a greenhouse or raised from seed, termed 
‘ culture plants 
3. Plants of a type which only occur where 5 . binervosa and 5 . bellidi- 
folia meet, termed ‘ broad-leaved variety ’ (PL VI, Photo 2). 
II. Description of the Species. 
A. Static c binervosa. 
The great variability of this species has already been the subject 
of comment. As Mr. C. E. Salmon has pointed out : ‘ Almost every 
locality for L. occidrntale (— S. binervosa) in Britain seems to possess 
a form slightly different from the 
plants in another locality.’ 1 At 
Blakeney several forms are to be 
found, but these fall into two 
groups, viz. the typical narrow- 
leaved form and the broad-leaved 
variety which may possibly be 
of hybrid origin. 
Within certain definite limits 
the narrow-leaved form shows 
variation. The width of the leaves, 
for example, appears to be cor- 
related with the amount of mois- 
ture available. Thus if plants be 
grown in very dry soil the lamina 
tends to become very narrow 
(Text-fig. 2, c ), whereas the width 
increases if abundant water is sup- 
plied (Text-fig. 2 ,a). In the 
latter case, however, the majority 
of the leaves have excurrent veins, 
thus differing from the broad-leaved variety. Cultivation and supply of 
moisture seem not to affect the floral characters to any appreciable 
extent. If conditions are moist, however, the purple coloration of the 
bracts appears to be absent. The difference in height seems to be 
mainly a question of nutrition and not dependent on heredity. 
The Leaves. 
In the adult condition the leaves of Statice binervosa (Text-fig. 2) are 
lanceolate-spathulate, the blade narrowing to a long petiole. The width and 
form of the blade vary greatly and the two main types will be considered 
1 Salmon, C. E. : Jonrn. of Bot., vol. xl-i, 1903, p. 70. 
Text-fig. 2. Leaves of Statice binervosa. 
a-c, narrow-leaved form ; d-e, broad-leaved form. 
Nat. size. 
