Cannabis ruderalis

Cannabis ruderalis is a proposed Cannabis species associated with Central and Eastern Europe and Russia. It is commonly distinguished by wild growth and flowering triggered chiefly by plant age rather than day length.

Cannabis: A genus of flowering plants that includes cultivated hemp and drug-type plants. Ruderalis is treated as a species within this taxonomically disputed genus.
Autoflowering cannabis: Cannabis plants bred to flower largely according to age rather than changes in day length. This cultivated trait draws on the day-neutral flowering associated with ruderalis.
Central Europe: A region of Europe whose boundaries vary by historical and geographic convention. It forms part of the reported native range of ruderalis.
Cannabis indica: A Cannabis species name used for plants associated historically with South and Central Asia, with disputed taxonomic boundaries. It is one of the principal named taxa contrasted with ruderalis.
Cannabis sativa: A Cannabis species name widely used for cultivated plants, though its taxonomic scope is disputed. Its relationship to ruderalis is central to competing Cannabis classifications.
Vernalization: The promotion of flowering by exposure to prolonged cold. It is another environmental route to flowering, unlike ruderalis's commonly described age cue.
Eastern Europe: A region of Europe commonly defined by geographic and historical criteria. Wild ruderalis populations have been associated with this region.
Hemp: Cannabis plants cultivated primarily for fiber, seed, or other non-intoxicating uses. Hemp is a cultivation category, not a wild species equivalent to ruderalis.
Photoperiodism: A biological response to recurring changes in day and night length. It explains the day-length cues that ruderalis flowering largely bypasses.
Phytochrome: A plant photoreceptor that detects red and far-red light and helps regulate development. Phytochrome signaling is part of the day-length system that ruderalis flowering can evade.

Linked from 2 pages