302 CARL HALLQVIST 

with a bluish tinge at the base. Wings violet with blue nerves, the 
lower edge from the place of union downwards with a bluish tinge; 
the upper edge lighter, in its upper part, above the place of union, 
reddish violet. Keel white with violet nerves and blackish violet beak. 
Blue coloured parts enlarging with age, the colour intensifying. Sepals 
and bracts violet, the distribution of colour as in the former type. 
The colour of the axis brownish. | 
The bluish red type (Pl. II, fig. 3). Standard red with blue 
nerves. Wings red with blue nerves, the colour weaker in the back 
parts of the upper edge, and in the basal parts on the whole. The 
area above the union of the wings either quite blue or sharply 
defined by a blue line. Keel white with blackish red beak. Older 
flowers with a diffuse blue colour, intensifying with age. Sepals and 
bracts reddish with a tinge of blue. The distribution of the colour 
in these organs as in the blue type. The axis bluish red. 
Bluish red is ordinary called red in Lupinus angustifolius. Bluish 
red is probably the colour called rose by Fruwirtn and red by 
VESTERGAARD, aS mentioned in the above. 
The pure red type (Pl. II, fig. 4). I have intentionally adopted 
this name to mark it off from the bluish red type with which it is 
easily confused. As regards the red colour no difference is seen in 
the both types, but every trace of blue colour in the flower and in 
other parts is absent from the pure red. The axis is brownish red. The 
difference between the two colour types is quite distinct and errors in 
classifying them are out of question to the trained observer; a less 
trained eye, however, may have some difficulty in separating the types. 
This difference is also noticeable in the seed colour. Cp. the descrip- 
tion of the seed colour, pag. 304, and the characteristic of the seed 
colour in immature stages, pag. 331. 
The tinged red type (Pl. II, fig 6). Standard and’ wings with a 
faint, yellowish tinge of rose. Keel as in the tinged blue type, without 
colour, even in the beak. Sepals, bracts and axis as in the bluish red type. 
The white type. Standard and wings in early stages pure white, 
coloured with age. Intensity of the colour varies with different en- 
vironmental conditions; it is sometimes so marked that a flower in the 
proper stage of development hardly deserve to be called white coloured. 
An old individual of a white line seems to be stronger coloured than 
the »dilution forms» tinged blue and, particularly, tinged red, since 
the colour of these is diffuse, while the colour of the whites is con- 
centrated in the wings. 
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