ligules

Updated: May 23, 2025

In concluding this series of examples of horticultural mutations, I might mention two cases, which have occurred in my own experimental garden. The first refers to a tubular Dahlia. It has ray-florets, the ligules of which have their margins grown together so as to form tubes, with the outer surface corresponding to the pale under-surface of the corolla.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

The variety multiflorus has several forms; the commonest form is double, the disk being filled with ligules much shorter than those of the ray flowers, after the form of many daisy-like composites. In this double form the day flowers are often wanting. It is common also on old plants in poor soils to see double and single flowers from the same root.

Various - Scientific American Supplement, No. 484, April 11, 1885