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. 2020 Jun 25;11:718. doi: 10.3389/fpls.2020.00718

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Copyright © 2020 Punja and Holmes.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Seed formation within hermaphroditic inflorescences of Cannabis sativa. (A) Longitudinal section cut through the female inflorescence showing outer protruding stigmas and unfertilized ovules. (B) Seed formation within a hermaphroditic inflorescence after 3–4 weeks. Some of the calyx tissue was cut away to reveal the underlying seeds. (C) Seeds recovered from hermaphroditic flowers, ranging from mature (brown) to immature (yellowish-green). (D) Stages of seed germination after placement in a cocofibre:vermiculite potting medium and incubation for 10 days.