International Registration of Cultivar Names for Unassigned Woody Genera 1993

Abstract

Donald G. Huttleston, 73, died on 2 Dec. 1993, as a result of an automobile accident. “Dutch,” as he was known to colleagues and friends, served as Registrar for the International Registration Authority (IRA) for Cultivar Names for Unassigned Woody Genera since June 1984. During 1993, 10 applications for registration of cultivar names in unassigned woody genera were received; five of these applications had been processed by Huttleston at the time of his death. The remaining five registrations have a 1994 date, but should be considered 1993 registrations. Photos and herbarium specimens will be deposited in the Herbarium of the U.S. National Arboretum, Washington, D.C. Anyone who is involved in originating or introducing new cultivars of ornamental plants is urged to assure that the names are registered with a view to nomenclatural stabilization. A Directory of International Registration Authorities is available from the American Association of Botanical Gardens and Arboreta, 786 Church Rd., Wayne, PA 19087, USA. Acer saccharinum L. ‘Lockstead’. Registered 24 Nov. 1993. Registrant: Norman Stewart, Stewart’s Botanical Garden, Lockstead Settlement, Box 69, Blackville, New Brunswick EOC 1C0, Canada. Introducer: Sheridan Nurseries, RR 4, 10th Line, Georgetown, Ontario, L7G 4S7, Canada. In 1990 Stewart discovered a silver maple with small, extremely deeply lobed foliage, the lobes being thread-like. The original tree has a 6-m trunk, a total height of 24 m, and a 12-m spread; branch tips are pendulous. The plant was vegetatively propagated in 1991. ‘Lockstead’ silver maple appears to be hardy to Canada Dept. of Agriculture hardiness zone 2b. Betula ‘Crimson Frost’. Registered 18 June 1994. Registrant: Thomas S. Pinney, Jr., Evergreen Nursery Co., 5027 County TT, Sturgeon Bay, WI 54235, USA. ‘Crimson Frost’ was selected in 1985 from progeny of the cross B. platyphylla var. szechuanica (Schneid) Rehd. × B. pendula Roth ‘Purpurea’ made in 1978. At age 15, the tree is 13.5 m high and has a 10.5-m spread. Foliage is deep crimson and glossy; margins are serrate, dentate; veins recessed. In full exposure, the foliage retains its deep crimson color all summer. Fall color is crimson to bright red, to orange-red, to orange-yellow, retaining colors up to 1 month. The bark is white with cinnamon tones and exfoliating. ‘Crimson Frost’ is hardy in U.S. Dept. of Agriculture hardiness zones 5a (possibly 4b) to 6. Prefers cool, moist soils and does well in heavy, clay soils. It was introduced in the nursery trade in 1989 and described in American Nurseryman [175(5):44, 1 Mar. 1992]. Buddleia davidii Franch. ‘Golden Sovereign’. Registered 18 June 1994. Registrant: Peter Geoffrey Addison, Black-Acre, Edmond Castle, Wetheral, Carlisle, CA4 SQD, U.K. Bud mutation of ‘Empire Blue’; first discovered and propagated in 1991. Instead of being green, the foliage of ‘Golden Sovereign’ shows random golden variegation ranging from slight variegation to almost entirely golden leaves. Hardy in U.S. Dept. of Agriculture hardiness zone 8. Cassia × nealiae Irwin & Barneby ‘Lunalilo Yellow’. Registered 18 June 1994. Registrants: G.W. Staples, Bishop Museum, Natural Sciences Dept., P.O. Box 19000-A, Honolulu, HI 96817, USA; P.R. Weissich, Paul Weissich and Associates, P.O. Box 4758, Kaneohe, HI 96744, USA. ‘Lunalilo Yellow’ hybrid shower tree resulted from the cross C. javanica L. × C. fistulosa L., made about 1910-17, and was selected about 1917-20 by David Haughes, territorial forester, Territory of Hawaii. Some of the progeny of this cross was planted along Lunalilo Street, but the original tree is no longer extant. A more than 30-year-old severely pruned tree is now 10.5 m tall and has a 4.5-m spread. Cassia ×nealiae is an evergreen tree, more floriferous than