Polystichum proliferum x P. braunii.
Epithet is after the late Jimmy Dyce, a leader of the British Pteridological Society and an enthusiastic researcher into the variations and classifications of Polystichum cultivars (as well as the subtle variations of a good highland malt). Evergreen, 2V2 to 3V2 ft. (75 to 105 cm).Zones (6) 7 and 8.
description: The rhizome is stout with an imposingly robust crown. The 2- to 3-in. (5- to 7.5-cm) succulent, green stipes are crowded with blackish-brown scales etched in tan. The bipinnate-pinnatifid blade is broadest approaching the terminal third with 20 to 30 pairs of pinnae. Like Polystichum braunii the blade tapers at the base and is in full foliar dress to the ground. One to three propagable bulbils are on the fronds' undersides, 2 to 4 inches (5 to 10 cm) from the apex. Beyond the bulbil site, the ultimate foliage is greatly reduced in girth. Sori with abortive spores trim the pinnules, closer to the margins than midribs.
range and habitat: This is one of several hybrids created under laboratory conditions by the late Anne Sleep of Leeds University in Britain. Many of them involved a parent with a bulbil. While the resultant hybrids are sterile, the bulbiferous character persisted in the progeny, thus enabling scientists as well as horticulturists to reproduce the hybrids without the assistance of a laboratory. They are endowed with hybrid vigor and establish readily in gardens.
Polystichum xdycei fills the garden with hybrid exuberance and a broad expanse of evergreen foliage.
culture and comments: This vigorous, sterile hybrid grows rapidly in light compost and dappled shade. It is an easy showpiece and choice focal point for a fern display garden and consistently brings admiring compliments from visitors. it is gradually being distributed in U.S. commerce and has been successful through the vagaries of many winters in British and
European gardens. The bulbils can be removed at any time from late summer on, or should you forget, in early spring and with real or simulated greenhouse encouragement will easily duplicate the plant.
Was this article helpful?