Anemone pulsatilla is pasque flower; the seeds carry a ‘tail’ formed by the persisting style, which is covered in hygroscopic hairs. Stipa pennata is feather grass; the seeds have a bristle-like extension from the lemma of the floret called an awn. Payne had sent seeds of the latter to Francis Darwin in 1878 (Correspondence vol. 26, letter from T. H. Farrer, 4 May 1878). Francis had written a paper on the mechanism by which awned seeds, like those of Stipa pennata, buried themselves in the ground (F. Darwin 1876).