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Even three-angled pollen grains are seen sometimes. Other marks are observed in the form of the anthers and the spur. There seem to be very many local subspecies of the field-pansy. Jordan has described some from the vicinity of Lyons, and Wittrock others from the northern parts of Europe.
The second is called V. arvensis or the field-pansy; it has small inconspicuous flowers, with pale-yellowish petals which are shorter than the sepals. It pollinates itself without the aid of insects, and is widely dispersed in cultivated fields. The third form, V. alpestris, grows in the Alps, but is of lesser importance for our present discussion.
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