Despite the catastrophic effects of continental drift, volcanoes, meteor strikes and ice ages over the last 200 million years, the cycads abide. These very ancient plants are found in our gardens as ...
A comparative morphological study of mature seeds of Cycas revoluta, C. media, C normanbyana, C. taiwaniana, and C. wadei revealed a three-layered seed coat consisting of sarcotesta, sclerotesta, and ...
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