This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A genus of stove climbers requiring a peaty soil and raised by cuttings. D. amabilis is a well-known hybrid with purple-crimson flowers; D. Brearleyana, rich crimson; D. atropurpurea (fig. 278), crimson-purple; amoena, splendens, crassinoda, eximea, illustris, Sanderi, and speciosa are also good plants.
Fig. 278. - Dipladenia atropurpurea.