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经过一个炎热的盛夏,紫藤荚果逐渐长大,里面一般会有1～6粒种子,种子成熟后表面呈灰褐色,扁圆形,似纽扣。荚果内的种子到10月底已基本成熟,荚果的外表也由原来的军绿色逐渐转为紫褐色,质地也变坚硬了。到了11月间,有趣的散种现象就发生了。在接受阳光较多的一侧,果荚逐个开裂,在开裂的同时荚片扭曲,借荚片的扭曲力将种子抛向10米开外的地方。若果荚掉在较硬的地面上,因重力作用果荚会摔开,荚片在扭曲的同时连同种子一起抛向远方,并发出“嗡”的声响。这就是紫藤有趣的散种方式。当然,也有不少成熟的种子会落在植株附近。那些抛向远方的种子若遇到合适的条件,会生根发芽。紫藤就是用这种方式来不断扩大家族的阵容。这种散种现象将会持续到11月底。
After a hot summertime, the wisteria pods grow and grow, which usually have 1 to 6 seeds, the surface of the seeds are brownish-brown, oblate, like a button. The seeds in the pod have basically matured by the end of October, and the appearance of the pod has gradually changed from the original army green to purple-brown, and the texture has also become harder. By November, the interesting seeding phenomenon took place. On the sunnier side, the pods were cracked one by one, and the pods were twisted while cracking and the seeds were thrown 10 meters away by the twisting force of the pods. If the pods fell on a harder ground, the pods would fall apart due to gravity and the pods would be thrown away together with the seeds while twisted, and a “hum” sound would be heard. This is a fun way to scatter Wisteria. Of course, many mature seeds will fall near the plants. The seeds thrown to the distance will germinate if they meet the right conditions. Wisteria is in this way to continuously expand the family lineup. This seeding will continue until the end of November.