Fl. large, sometimes with several centers, sometimes with green segments among the yellow; perianth and other petaloid segments in many whorls, ovate, pale yellow, with margins wavy, not much overlapping; the outer whorls spreading; the inner whorls inflexed or at center strongly inflexed; corona segments broad, more than half as long as the petaloid segments and interspersed among them, of a deeper yellow, sometimes bi-lobed, frilled; sometimes opening with the outer whorl of the corona continuous, with pale yellow and darker yellow segments intermingled within. Some question if this the same as ‘Maximus Flore Pleno’?

A description according to Daffodils, narcissus, and how to grow them as a hardy plants for cut… 1907 by Arthur Martin Kirby, “Rich yellow and delightfully fragrant…the flower is really a conglomeration of small double flowers crowded together into a rosette. After Parkinson popularized it by the description in his Herbal published in 1629 – the variety was afterwards also known as ‘Parkinson’s Rose-flowered Daffodil’. Botanically it is Lobularis plenissimus or grandi-plenus”.

'A Cent Feuilles', 'John Tradescant's Great Rose Daffodil', 'Maximus Grandiplenus', 'Tradescant's Great Rose Daffodil', 'Tradescant's Great Rose Double Daffodil', 'Tratus Cantus'

There are no photos of "Plenissimus" in Daffseek.