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Strobilus: noun; a botanical term, which came originally from the Greek strephein meaning ‘to twist’, and which is used to describe the cone of a pine, fir or other conifer; and also ‘a structure resembling the cone of a conifer, such as the flower of the hop’ (Oxford Dictionary).

180404 strobilus

I have the lovely Helen of Plantlife Cymru to thank for this word because, when I originally posted this photo on Twitter, she responded by saying that ‘the strobilus is ascending’. My photo shows the newly emerged stalks of Equisetum (possibly Field horsetail, Equisteum arvense), which is a dinosaur of the plant world, a plant that reproduces using spores rather than seeds. The spores are produced in the strobili, the cone-like structures you can see on the tips of the stems.