ARNOLDIA >~ . -~ . VE RI .r~ A of publication _ THE ARNOLD ARBORETUM OF HARVARD UNIVERSITY Jamaica Plain, Massachusetts 02130 VOLUME 29 M A RCH 7, 1969 NUMBER I PLANT REGISTRATIONS so often during the past 8 years new cultivars which have been regis- EVERYtered by the Arnold > rboretum have been published in Arnoldia. (See Arnoldia, Vol. 21 : 9-18 ; 31-34 ; 39-42 ; 47-50. Vol. 23 : 17-7 5 ; 77-83 ; 85-92 ; 11 1-1 18. Vol. 24: 1-8 ; 41-80. Vol. 26 : 13-16. Vol. 2 7 : 16-66). Included in this issue are those which have been registered between August 25, 1967 and January 1, 1969. All correspondence concerned with more information, plants or propagating material of these plants should be directed to the various origina- tors or introducers, not the Arnold Arboretum. Carissa grandiflora ’Tom Humphreys’ A variegated form of Carissa grand~lora, this was first observed in 1962 at the Humphreys Nursery, North Miami, Florida, by Ralph L. Thurston who says that the leaves show a "white to yellowish variegation, the blooms white, four petaled, 1~’~ across. The fruit is elliptic, 1" long, 4~~ wide, variegated, bud reddish pink at maturity. The fruit is edible. Estimated growth habit 3~ high, 3~ wide, grow- ing well in all soils in well drained areas in the sun or in the shade." It is hardy in Zone 9. - Ceanothus griseus ’Louis Edmunds’ Name published with description : "A new cultivar : Ceanothus griseus ’Louis Edmunds’," Jour. of the California Horticultural Society 18 (2), 28-30, April 1957, by Maunsell van Rensselaer. Ceanothus X ’Julia Phelps’ , Name published with description: "A New Ceanothus" probably a cross be- tween C. roweanus and C. impressus, Jour. of the California Horticultural Society 13: ~1~ p. 20, January 1952 by Maunsell van Rensselaer. Cedrus deodara ’Kashmir’ This originated in the nursery of Dr. J. Franklin Styer, Concordville, Penn. about 1929. According to Dr. Styer it is "the only plant of 200 set in nursery rows in 1930 which survived the winter of 1933-34 when temperatures dropped suddenly to 25 degrees below zero. Standing alone, it also survived the similar winter of 1936-37." Alfred Fordham of the Arnold Arboretum notes that prop- agations from this clone have proved hardy at the Arnold Arboretum since 1961. It was introduced commercially by Dr. Styer in 1950 and apparently resembles the species in every way except that it is considerably more hardy. Cornus florida ‘First Lady’ This cultivar was first discovered at the Boyd Nursery Co., Inc. of McMinn- ville, Tennessee in their nurseries in 19~ i . It flowered first in 1967. In register- ing it, Dr. Robert D. MacDonald, formerly director of the University of Tenn. Arboretum, writes : "The distinctive feature of this plant is its brilliant green and golden foliage. The central portion of the leaves ranges from a moderate yellow-green (5 GY 5/6 of the Nickerson Color Fan) to a strong yellow-green (5 GY 6/8). The margin of the leaves is a vivid yellow (5Y 8/12); this vivid yellow coloration is not of a constant width but suffused irregularly along leaf veins towards and into the center of the leaves. This vivid coloration is present from the time the leaves appear in the spring until October when the green por- tions turn an attractive maroon and green and the yellow portions become suf- fused with pink." Originated in Hardiness Zone 6. Cornus florida Purple Splendor’ Another chance seedling originating in a block of 250,000 seedlings at the Boyd Nursery Co., Inc., McMmnville, Tennessee and first observed in 1966. Dr. Robert D. DIacDonald, former director of the University of Tenn. Arbore- tum, in registering the name writes: "This plant is characterized by having foliage which is a waxy deep maroon to red-purple suffused over a light green background. This feature is present from the time the leaves appear in the springg and remains throughout the growing season.’’ Originated in Hardiness Zone 6. Cornus florida ‘~-elch’s Junior Miss’ Found as a plant in the wild in 1957 by Clarence H. Welch, Wilmer, Alabama, 36587, in North Mobile County. A trademark was applied for in 1967 and it was introduced in 1968. "It is characterized by deep red bracts with white base and small white tips. The red fades to a pink in 10 days to 2 weeks. Prolific bloomer. Lower set of opposite bracts are about larger than the upper set. Second pair of bracts are attached abov e and overlap the first pair. New growth in full sun is copper colored changing to deep green at maturity." It is hardy at Auburn, Alabama, but its hardiness north of this spot is not known. Cotinus coggygria ’Velvet Cloak’ This originated at the Newport Nursery Co., Newport, Michigan and was found by Henry Kleine, Route 2, Box 5, Horse Shoe, N.C. 28742 prior to 196‘? when it was about 10 years old. It is being introduced by the Cole Nursery Co., Route 1, Circleville, Ohio, 43113 in the spring of 1969. According to Wm. H. Collins of the Cole Nursery Co. it is valued because of its ability to retain its dark purple foliage color through the growing season longer than other purple ~2~] leaved varieties observed. Individual leaves are uniformly colored without mar- ginal discoloration. The fruits are "fawn colored" and not purple. The plant is as hardy as the species. Crataegus X mordenensis ’Snow bird’ A second generation open pollinated seedling of Crataegus X mordenensis ‘Toba’ originating at the Canada Dept. of Agriculture Research Station at Mor- den, Manitoba, Canada in 1952, first discovered in 1961 and commercially intro- duced in 1968. It is a tree or large shrub, distinct because of double white flowers with no trace of pink, leaves mostly entire approaching those of Crataegus succu- lenta which was the pollen parent of C. X mordenensis ’Toba’. It has an upright growth habit and rounded bright crimson frmts about I cm. in diameter. It is hardy in the lower half of Zone 2. Crataegus X ’Vaughn’ Originating approximately 15 years ago in the New Augusta Nursery of Henry Schnitzms (deceased) 5195 W. 59th St., Indianapolis, Ind., and introduced in ’68-’69 by the Simpson Orchard Co., Vincennes, Indiana 47591. In the words of Robert C. Simpson, this is "probably a cross, C. phaenopyrum X crus galli? and was first selected from a group of C. phaenopyrum seedlings. The fruit is similar to that of C. viridis except more glossy and more nearly cherry red, the former being orange red. Leaves resemble those of C. viridis but are more glossy, darker green and may show brilliant red fall color. Young branches are brown- ish, not silvery white. Tree has thorns like those of C. crus-galli, 3~~ in length, sharp and curved. Vigorous. Although hardiness limits are yet unknown it appears widely adaptable." Crataegus viridis ’Winter King’ Although this was first introduced in 1955 by the Simpson Orchard Company, 1504 Wheatland Rd., Vincennes, Indiana 47591, it has not been registered until now. It was selected in 1949 by Robert C. Simpson at Frickton, Indiana because it differs from other seedlings of this species "in abundance of fruits at an early age and comparatively few thorns. It fruits heavily, with persistent red fruits ~~~ in diameter, showy throughout the winter; having silver bark and glossy, rust- resistant foliage. It is known to be hardy much beyond native habitat (Zone 4) and is widely adapted to soils." Juniperus horizontalis ’Prince of Wales’ Collected in the wild near High River, Alberta in 1931 this was first propa- gated by the Canada Dept. of Agriculture Research Station, Morden, Manitoba in 1931 with commercial introduction in 1967. In the words of Mr. W.A. Cum- ming, Director of the Morden Station, it is "very procumbent, forming a dense mat 4-6 inches in height, foliage both acicular and scale like, bright green in color, younger foliage with a bluish tinge caused by a waxy bloom. Exposed foliage tinged purplish-brown in the winter months." It is hardy in Zone 2. Liquidambar styraciflua ’Burgundy’ First observed in 1951 by Dlaunsell Van Rensselaer of the Saratoga Horticul- tural Foundation, Saratoga, California. It was introduced commercially by the Foundation in 1962. Its trademark number is 43,002, dated January 18, 1963. Maunsell Van Rensselaer states : "This variety is noteworthy because of its attractive deep green leaves which turn to a burgundy color in November or December (m Saratoga, California) and remain on the tree, fully colored, into January." It is hardy in Zone .5. Liquidambar styraciflua ’Festival’ This cultivar originated at Saratoga, California and was first observed in 1960 by Maunsell Van Rensselaer of the Saratoga Horticultural Foundation which in- troduced it in 1964. It has the trademark 43,765 dated April 21, 1964. Hardy in Zone 5. In the words of Maunsell Van Rensselaer: "The variety ’Festival’ is a handsome tree with a tall, narrow crown. In the autumn it bears a profusion of golden leaves touched with shades of apricot or peach." Liquidambar styraciflua ’Gum Ball’ Originated at McMinnville, Tennessee and was discovered by Hiram B. Stub- blefield, Rte. 2, McMinnville and introduced by the Forest Nursery Co. of McMinnville in 1965. In the words of Dr. Robert D. MacDonald, formerly direc- tor of the University of Tennessee Arboretum, "this plant is a bush-like, slow growing form of sweetgum which is characterized by a proliferation of small, erect stems which originate from a central root collar." Liquidambar styraciflua ’Palo Alto’ George Hood and M. Van Rensselaer of the Saratoga Horticultural Founda- tion, Saratoga, California, are listed as first observing this cultivar in 1954.