USOOPPO8901P United States Patent [191 [11] Patent Number: 8,901 Lewandowski et al. [45] Date of Patent: Sep. 20, 1994

[54] ENKIANTH US PER ULA TUS 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 Fz‘rm—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 Enkianth us perulatus plant [22] Filed: Aug. 3, 1993 named ‘J. L. Pennock,’ which is particularly character ized by its distinctive, bright red fall coloration, and [51] Int. Cl.5 ...... A01H 5/00 which can be readily distinguished from other Enkian [52] US. Cl...... Plt./54.1 thus by its onset of fall color development about [58] Field of Search ...... Plt. 54.1 two weeks before that of other perulatus [56] References Cited plants. PUBLICATIONS Huxley, A., et al (Eds) “Enkianthus” The New RHS 9 Drawing Sheets

1 2 BACKGROUND AND SUMMARY OF THE whereas typical Enkianthus perulatus plants are about INVENTION as wide as they are tall; (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 (iii) highly attractive fall coloration which, in Philadel perulatus, a member of the family and some phia, begins as early as the ?rst week of September, times called White Enkianthus. The new plant is of its leaves turning purplish, transforming to a bright unknown parentage. It was selected by Rick J. Lewan red by about the end of October, and retaining color dowski and Paul W. Meyer from among several seed through the fall season with those of other members lings growing in a cultivated research collection of 1O Enkianthus perulatus plants at The Morris Arboretum of the species; whereas typical Enkianzhus 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 perulatus that has highly unique characteristics which BRIEF DESCRIPTION OF THE FIGURES lend it to decorative autumn landscaping. The new Enkianthus perulatus plant has been named The accompanying drawings illustrate the new En ‘J. L. Pennock’. ‘J. L. Pennock’ was ?rst asexually prop kianthus perulatus variety, ‘J. L. Pennock,’ as grown in agated by softwood cuttings in 1988, at The Morris 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 Enkz'an 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 strate the plant’s summer flowering. ceeding generations through asexual propagation using FIG. 4 is a photograph of the new Enkz'anthus perula softwood cuttings. Enkianthus perulatus ‘J. L. Pennock’ tus ‘J. L. Pennock’ variety, which demostrates the is an attractive exhibiting white ?owers which are plant’s summer foliage. typical of the species, and bright red fall foliage, thus FIGS. 5 and 6 are photographs of the new Enkian making it ideal for use as an ornamental garden plant. 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 ?rst week of September, the before other such plants, and retaining its fall color to 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 Colorz. shows the favorable characteristics of the new ‘J. L. Upper side. —Dull medium green (Green l43-A). Pennock’ plant. At the fall color development Stage II, Underneath-Light green (Y ellow-Green l46-B). the plant begins to have an effective foliage display in Fall foliage: About the ?rst week of September, the landscape. As shown in the chart, ‘J. L. Pennock’ foliage begins to turn purplish (Greyed-Purple l83-A reaches this point about two weeks earlier than other — l85-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, 81-224 A, 32-0468 A, and 32-0467 A. ‘J. 10 end of October. L. Pennock’ also reaches development Stage III about Brilliance of upper surface: Absent. ?ve days earlier than others. At this point, most leaves Incisions on the margin: Present. lose chlorophyll and turn to a clear, bright red (Red Hairs at the margin: Absent. 45-A - 46-A). The ‘J. L. Pennock’ plant retains fully Curvature of margin: Absent. developed fall color until a hard frost hits, and defoli Cross-section of blade: Flat. ates, at which time it parallels other Enkianthus perula Twisting of blade: Absent. tus plants. The new ‘J. L. Pennock’ plant thus has a signi?cantly 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. DETAILED DESCRIPTION OF THE PLANT Undersurface: White hairs are present along the midrib. Throughout this speci?cation, color names beginning FLOWERS with a small letter signify that the name of the color, as used in common speech, is aptly descriptive. Color In?orescence: names beginning with a capital letter designate values 25 Number of?owers. —Few, about 2 to 5. based on the R.H.S. Colour Chart published by The Habit-Flowers are produced in after the Royal Horticultural Society of London, England. leaves. The descriptive matter which follows pertains to the Time of?owering. —Third week of April - ?rst 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 in?orescence 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 ?ower. —About 4 and cultural conditions; on the mature parent plant, mm. 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 Fragrance. —Absent. mal, rounded habit or be pruned to induce greater Color. —White. branching by periodically removing some of the Zygomorphy. —Absent. stems to the ground to induce additional growth; Corolla: when plant if fully mature, it is essentially self-prun 50 ing. 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 gin: Absent. Hairs: Absent. Scales: Absent. _ Branching habit: Basally dominant with branches pres 55 ented in whorls. Stamens: Size: About 2 m. tall and about 3 m. wide, at more than Number.—l0. 40 years old. Pubescence.—present. Density: Dense. Anthers: Prominent. Stem: Young shoot pale green, with red tinge (Greyed 60 Pistil: Purple l85-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 ?owering. during the various stages of fall color development, as Shape: Obovate broadly obovate. grown in the Philadelphia arboretum in 1990. Plant 8,901 5 6 TABLE 1 TABLE l-continued Fall Color Appearance of Outside Inside Fall Color Appearance of Outside Inside Development Date Whole Plant Leaves Leaves Development Date Whole Plant Leaves Leaves 5 Stage III Oct. 25 red Red Greyed~ 45-A-46-A Purple Summer medium green Green Green 187-B . Stage IV Nov. 19 brown tinge - Red Greyed F‘?‘age 146*‘ m'A burnt by frost 45-A—46~A Purple Stage I Sept. 4 green with Green Green l83-B red tinge 143_A 137_A 10 Defoliation Nov. 26 70% defohated

Red 53-A, _ 46A We claun: 1. A new and distinct variety of Enkianrhusperulatus Stage 11 Sept‘ 25 mm“ Greyed' Green plant named ‘J. L. Pennock’ as herein illustrated and Purple l37-A 15 described. 183-A * * *

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