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United States Patent (19) 11 Patent Number: Plant 8,901 Lewandowski Et Al

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United States Patent (19) 11 Patent Number: Plant 8,901 Lewandowski Et Al USOOPPO8901P United States Patent (19) 11 Patent Number: Plant 8,901 Lewandowski et al. 45) Date of Patent: Sep. 20, 1994 (54) ENKIANTHUS PERULATUS CV. J. L. Dictionary of Gardening The Stockton Press (1992) PENNOCK N.Y., pp. 163, 164. 75 Inventors: Rick J. Lewandowski; Paul W. Meyer; Rochelle J. Dillard, all of Primary Examiner-James R. Feyrer Philadelphia, Pa. Attorney, Agent, or Firm-Synnestvedt & Lechner 73) Assignee: The Trustees of the University of Pennsylvania, Philadelphia, Pa. 57 ABSTRACT 21 Appl. No.: 101,840 A new and distinct variety of Enkianthus perulatus plant 22 Filed: Aug. 3, 1993 named 'J. L. Pennock, which is particularly character ized by its distinctive, bright red fall coloration, and I51l Int. Cl. ............................................... A01B 5/00 which can be readily distinguished from other Enkian 52 U.S. Cl. ................................................... Plt./54.1 thus plants by its onset of fall color development about 58) Field of Search ........................................ Pt. 54.1 two weeks before that of other Enkianthus perulatus 56) References Cited plants. PUBLICATIONS Huxley, A., et al (Eds) "Enkianthus' The New RHS 9 Drawing Sheets 1. 2 whereas typical Enkianthus perulatus plants are about BACKGROUND AND SUMMARY OF THE as wide as they are tall; INVENTION (ii) a slow growth rate of 3 to 6 inches per year, making This invention relates to the discovery and asexual this plant an excellent candidate for the small garden; propagation of a new and distinct variety of Enkianthus 5 (iii) highly attractive fall coloration which, in Philadel perulatus, a member of the Ericaceae family and some phia, begins as early as the first week of September, times called White Enkianthus. The new plant is of unknown parentage. It was selected by Rick J. Lewan its leaves turning purplish, transforming to a bright dowski and Paul W. Meyer from among several seed red by about the end of October, and retaining color lings growing in a cultivated research collection of 10 through the fall season with those of other members Enkianthus perulatus plants at The Morris Arboretum of the species; whereas typical Enkianthus perulatus of the University of Pennsylvania, Philadelphia, Pa. varieties begin fall coloration sometime in October, The new plant was selected particularly because of its and transform to red, not bright red, by sometime in distinctive fall coloration. The object of this present November. invention is to provide a new variety of Enkianthus 15 perulatus that has highly unique characteristics which lend it to decorative autumn landscaping. BRIEF DESCRIPTION OF THE FIGURES The new Enkianthus perulatus plant has been named The accompanying drawings illustrate the new En J. L. Pennock'. 'J. L. Pennock' was first asexually prop kianthus perulatus variety, J. L. Pennock, as grown in agated by softwood cuttings in 1988, at The Morris 20 Philadelphia, Pa. Arboretum, by the plant propagator of the arboretum, FIG. 1 is a photograph of the new Enkianthus perula Rochelle J. Dillard. Asexual propagation has further tus J. L. Pennock' variety, which demonstrates the been accomplished at the Philadelphia arboretum, and plant's winter branching habit. also at a nursery in West Grove, Pa. Testing has shown FIGS. 2 and 3 are photographs of the new Enkian the J. L. Pennock' variety maintains its distinguishing 25 thus perulatus J. L. Pennock' variety, which demon characteristics, as hereinafter set out, over several suc ceeding generations through asexual propagation using strate the plant's summer flowering. softwood cuttings. Enkianthus perulatus J. L. Pennock' FIG. 4 is a photograph of the new Enkianthus perula is an attractive shrub exhibiting white flowers which are tus J. L. Pennock variety, which demostrates the typical of the species, and bright red fall foliage, thus plant's summer foliage. making it ideal for use as an ornamental garden plant. 30 FIGS. 5 and 6 are photographs of the new Enkian The most celebrated feature of J. L. Pennock' is its thus perulatus J. L. Pennock' variety, which demon distinctive fall coloration which can be readily distin strate the plant's foliage at an intermediate stage of fall guished from other Enkianthus varieties by beginning coloration (Greyed-Purple 183-B). At this stage, which to develop its fall coloration approximately two weeks can begin as early as the first week of September, the before other such plants, and retaining its fall color to 35 plant no longer demonstrates its summer green foliage the end of the duration of the fall season. The following and has yet to demonstrate its peak autumn color, a combination of characteristics are exhibited by this new bright red, which is fully developed by the end of Octo variety and further enable it to be distinguished from ber. other Enkianthus perulatus varieties: FIGS. 7 and 8 are photographs of the new Enkian thus perulatus J. L. Pennock variety, which demon (i) a dense, symmetrical growth habit that is wider than strate the plant's foliage at its peak autumn coloration it is tall, possessing a strongly layered appearance; (Red 46-A). Plant 8,901 3 4. FIG. 9 is a graphic depiction of the fall color devel Size: Averaging about 30 to 35 mm. in length and about opment of several Enkianthus perulatus plants growing 15 mm. in width. at the Philadelphia arboretum in 1992. The chart clearly Color:. shows the favorable characteristics of the new J. L. Upper side-Dull medium green (Green 143-A). Pennock' plant. At the fall color development Stage II, Underneath.-Light green (Yellow-Green 146-B). the plant begins to have an effective foliage display in Fall foliage: About the first week of September, the landscape. As shown in the chart, J. L. Pennock' foliage begins to turn purplish (Greyed-Purple 183-A reaches this point about two weeks earlier than other - 185-A), later transforming to its peak autumn Enkianthus plants at the arboretum, i.e. plants desig color, a bright red (Red 45-A - Red 46-A), by the nated 65-338 B, 81-224A, 32-0468 A, and 32-0467 A. J. 10 end of October. L. Pennock’ also reaches development Stage III about five days earlier than others. At this point, most leaves Brilliance of upper surface: Absent. lose chlorophyll and turn to a clear, bright red (Red Incisions on the margin: Present. 45-A - 46-A). The J. L. Pennock' plant retains fully Hairs at the margin: Absent. developed fall color until a hard frost hits, and defoli 15 Curvature of margin: Absent. ates, at which time it parallels other Enkianthus perula Cross-section of blade: Flat. tus plants. The new 'J. L. Pennock' plant thus has a Twisting of blade: Absent. significantly longer period of effective fall color in the Shape of apex: Acute. landscape. Shape of base: Cuneate. 20 Grooving of nerves on upper side: Little. DETALED DESCRIPTION OF THE PLANT Undersurface: White hairs are present along the midrib. Throughout this specification, color names beginning FLOWERS with a small letter signify that the name of the color, as used in common speech, is aptly descriptive. Color Inflorescence: names beginning with a capital letter designate values 25 Number of flowers.-Few, about 2 to 5. based on the R.H.S. Colour Chart published by The Habit-Flowers are produced in umbels after the Royal Horticultural Society of London, England. leaves. The descriptive matter which follows pertains to the Time of flowering-Third week of April - first or Enkianthus perulatus J. L. Pennock' plants grown at second week of May. The Morris Arboretum of The University of Pennsylva 30 Bud: nia, Philadelphia, Pa., and is believed to apply to plants Attitude of scales.-Not adpressed. of the variety grown under similar conditions of soil and Terminal inflorescence bud-Shape: elliptic. climate elsewhere. Pedicel: About 10 to 15 mm. in length. 35 Calyx: Name: Enkianthus perulatus cv. 'J. L. Pennock'. Presence-Present. Parentage: Unknown; selected from among several Type.-Not petaloid. seedlings growing in a cultivated research collection Pubescence.--Absent. of Enkianthus perulatus plants. Flower: PLANT Attitude.-Pendulous. Diameter-About 6 mm. Internode length: Varies, depending upon age, vigor Maximum width of open folded flower.-About 4 and cultural conditions; on the mature parent plant, internode length ranges from 1.0 to 7.5 cm.; on youn Shape.-Urn-shape. ger plants, internode length can reach 15-20 cm. 45 Type.-Single. Pruning and training: Can be pruned to maintain a for mal, rounded habit or be pruned to induce greater Fragrance. -Absent. branching by periodically removing some of the Color-White. stems to the ground to induce additional growth; Zygomorphy. -Absent. when plant if fully mature, it is essentially self-prun Corolla: ing. 50 Incisions of corolla.-Shallow. Growth: Length.-Averaging about 5 to 6 mm. Type-Shrubby. Lobes.-Number: 5. Shape of apex: Curls up. Cren Habit-Globular/rounded. elation of margin: Absent. Undulation of mar Branching habit: Basally dominant with branches pres 55 gin: Absent. Hairs: Absent. Scales: Absent. ented in whorls. Stamens: Size: About 2 m. tall and about 3 m. wide, at more than Number.-10. 40 years old. Pubescence.-present. Density: Dense. Anthers: Prominent. Stem: Young shoot pale green, with red tinge (Greyed Pistill: Purple 185-A) on portion of stem exposed to full sun, Type-Not petaloid. turning to gray in second year; presence of hairs on Length in comparison with stamens.-Longer. stems varies from early season to late season; glabrous Fruit: Typical of the species; produces no viable seed. in late summer. 65 Table 1 below indicates the transformations in color LEAVES of the new Enkianthus perulatus J. L. Pennock' variety Type: Deciduous, and advanced before flowering. during the various stages of fall color development, as Shape: Obovate broadly obovate.
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