A wild hybrid between N. pseudonarcissus primigenius (which is now a species primigenius) and (true) N. triandrus spp. triandrus, known from one or two places in Portugal and Spain.
Lovely pale yellow trumpets, darker at the base, with sideways-facing, paler petals. The flowers are intermediate in size between the parents though they are still quite miniature.
Very lovely and easily grown either in a pot, or better still planted out in part-shade in a humus-rich soil with decent drainage, but this is a tolerant plant.