This section is from the book "The Gardener's Monthly And Horticulturist V26", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
To Primrose growers, one of the most interesting plants now in blossom in the College Gardens, Dublin, is the new Primula obconica, a Chinese species from the Tchang Valley. The flower, which is almost white, is rather like that of P. Munroi, but in habit the plant is more like P. mollis, the inflorescence being verti-cillate, and the corolla having in most blossoms an oblique limb. The calyx is the most remarkable part of the flower, being very short and wide, so that the corolla tube stands in it as in a large cup. The foliage somewhat resembles that of P. mollis or P. sinensis in shape; but is of a thick stiff texture and slightly glabrous; and the surface of the leaf is very uneven, more so than that of any Primula I know. A batch of seedling plants have, as Mr. Burbidge pointed out, a rather dangerous likeness, at first sight, to little plants of Coltsfoot. He also informs me that although this P. obconica (= P.poculiformis) is a true whorl-flowered species, yet its seeds germinate very quickly if sown as soon as they ripen. The same is true of P. japonica, but if the seeds be kept in a dry state for some time most of the species are slow and uncertain in germination.
One peculiarity about P. obconica is that if the seed capsules are removed the plant continues to flower all through the year. The plant in the College Gardens came from Messrs. Veitch in November of last year, and has been in flower ever since, having also ripened seeds from which a good crop of young plants has been raised. - C. M. Owen, in Gardeners' Chronicle.