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in a single character, having yellow or orange anthers. This is due 
to a difference in the pollen, which is clear yellowish green in one 
form and reddish brown in the other. The latter colour is caused by 
the presence of an orange colouring matter in the cytoplasm, which 
exudes through the cell wall when the pollen is placed in alcohol 
or water. Both types of pollen germinate, and plants with the 
yellow type of pollen appear to be at least twice as numerous as 
those with the orange pigment. This is of particular interest as 
showing dimorphism in a gametophytic character. 
Leptospennum scoparium is a polymorphic shrubby species 
occupying vast tracts of New Zealand, with a series of forms also 
in Tasmania and Australia. It has conspicuous white flowers 
sometimes stained with pink. In the north of North Island 
(Cockayne, 1907) a variety is abundant having invariably pale pink 
flowers, the colour in the petals being confined to the base of the 
claw. About 1897 a plant was discovered in Otago having petals 
bright rose colour over their whole surface. This form is known 
in commerce as L. Chapmani and is multiplied by cuttings. Later, 
on the sandhills 200 miles from where Chapmani originated, a 
plant with rich crimson flowers, was found. It also differed in its 
more slender, drooping habit, darker foliage, and the flowers were 
not terminal. From open-pollination a few seedlings like the type 
were obtained. The evidence indicates that the polymorphism of 
this species is due to mutation, two of the forms having already 
established themselves as local varieties. 
Coreopsis tinctoria Nutt, is an annual North American Composite, 
often cultivated and escaped from gardens. It is polymorphic, 
producing (1) dwarfs, and forms with (2) brown ray florets, (3) tubular 
ray florets and (4) ligulate disc florets. Raciborski (1908) found 
in an escaped colony near Lemberg a peculiar type first described 
by Al. Braun in 1870. It has numerous adventive shoots arising 
on the internodes and also on the under surface of the leaves along 
the midrib and was called var. prolifica. The seeds from such a 
plant with brown rays yielded 84 offspring, all but 11 of which 
showed the adventive shoots. Some of the latter were tall, some 
short, and a few had yellow rays. Seeds of another (yellow) 
pvolifica gave 420, of which all but 16 showed the abnormality. 
This indicates that the abnormality is probably a recessive, the 
normals being due to vicinism. Normal plants, however, never 
gave seedlings with the abnormality, nor could it be produced by 
wounding or cultivation on rich soil. 
