THE EXPLOSION OF BROOM PODS. The seed-pods of broom in ripening turn black. In the heat of the sun they burst open with a crackle. The two valves twist into a spiral and the seeds are jerked out to a distance of several feet. This is very effective, but there is no vitality in it. The explosion is due to the unequal shrinking of two layers of woody cells in the wall of the pod. It is a purely mechanical mode of seed-scattering.
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Bibliographic details
Star (Christchurch), Issue 19060, 3 May 1930, Page 17 (Supplement)
Word Count
83THE EXPLOSION OF BROOM PODS. The seed-pods of broom in ripening turn black. In the heat of the sun they burst open with a crackle. The two valves twist into a spiral and the seeds are jerked out to a distance of several feet. This is very effective, but there is no vitality in it. The explosion is due to the unequal shrinking of two layers of woody cells in the wall of the pod. It is a purely mechanical mode of seed-scattering. Star (Christchurch), Issue 19060, 3 May 1930, Page 17 (Supplement)
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