Hedera Helix
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Fall/Winter 2016 Volume 42 IVY JOURNAL Hedera nepalensis 'Suzanne' Mary’S PLANT FARM & LANDSCAPING • 65 hardy ivy varieties acclimated to Z6. 1-2 yr. rooted plants in 2.5” or 4” pots. • Home of the original H.h.‘Galaxy’. • Complete nursery catalog of field grown perennials, roses, wildflowers, shrubs and trees. www.marysplantfarm.com 2410 Lanes Mill Road, Hamilton, OH 45013 CLIFF FINCH'S TOPIARY ZOO Offering a selection of topiary frames (559) 822-2315 ph/fx PO Box 54 Friant CA 93626 www.topiaryzoo.com Evergreen Nursery, Inc. Wholesale growers of Ivies for 27 years Algerian Ingelise Shamrock Algerian Variegata Ivalace Telecurl Anne Marie Manda's Crested Walthamensis English Needlepoint All products available in 4" pots. English also in 2 ¼" pots. To view samples or price, go to www.evergreennurseryinc.net To order, call toll free 1-800-521-7267 Just once in 100 years . San Diego Floral Association celebrates a century of garden writing. To mark the centennial of California Garden, we published the twentieth century history of San Diego horticulture. This book has articles, illustrations, advertisements, biographies, and much more, all from original issues of the magazine published from 1909-2009. A great gift; a priceless keepsake. For sale in the SD Floral Assn office or online through www.sdfloral.org. 1650 El Prado #105, San Diego, CA 92101-1684 $30. including tax Ivy Journal 2016 Vol. 42 2 www.ivy.org General Information Ivy Identification, American Ivy Society, Inc. Registration 128 Husted Station Rd Russell A. Windle Elmer, NJ 08318 American Ivy Society P.O. Box 461 Membership Lionville, PA 19353-0461 The American Ivy Society Membership [email protected] Connie Meck 512 Waterford Rd Chapter Information Silver Spring MD 20901 www.ivy.org Officers and Directors Collections Information www.ivy.org President Emeritus – Suzanne Pierot Vice President – Patricia Riley Hammer Media Treasurer – Susan Hendley www.ivy.org Membership – Connie Meck Registrar, Ivy Research Center Director – Russell Windle Taxonomist – Dr. Sabina Mueller Sulgrove Board Members Rachel Cobb, Barbara Furlong, Dirk Llann, Inger Llan, Daphne Pfaff, Pearl Wong Ivy Journal Editorial Staff Rachel Cobb, David Pfaff, Patricia Riley Hammer, Henri Nier, Suzanne Pierot, Sabina Sulgrove, Russell Windle The American Ivy Society is moving into the digital age and will no longer send out hardcopy publications. However, we will continue to support ivy lovers with our web site presence and on-line support through email. The site will be updated regularly. We hope you will continue to visit us often at www.ivy.org. Please send all of you ivy questions and requests to [email protected]. Every precaution is taken to ensure accuracy but AIS cannot accept responsibility for the corrections or accuracy of the information supplied herein or for any opinion expressed. The American Ivy Society 128 Husted Station Road, Elmer, New Jersy, 08318 www.ivy.org Copyright 2016. The American Ivy Society. All Rights reserved. No part of this publication may be reproduced in any form, by photostat, microfilm, xerography, or any other means, or incorporated into any information retrieval system, electronic or mechanical, without permission of the copyright owner. ISSN: 0882-4142 Not for reprint in any media without written permission from The American Ivy Society. Ivy Journal 2016 Vol. 42 3 www.ivy.org IVY JOURNAL Fall/Winter 2016 Volume 42 CONTENTS For More Information 3 AIS Chapter Listing 3 Regional Ivy Collections 3 The Ivy Ivies and Oddities 5 Adult Ivy 18 2016 New Registration I 20 2016 New Registration II 22 Suzanne Warner Pierot 24 Glossary 29 Index To Photos 30 LIST OF ILLUstrations Hedera nepalensis 'Suzanne' Cover Hedera rhombea ‘Crème de Menthe’ Adult 19 Hedera helix ‘Road Toad’ 21 Hedera helix ‘Gold Shells’ 23 Hedera rhombea ‘Pierot’ 24 Suzanne Warner Pierot 25 Suzanne Warner Pierot 27 Pierot System of Classification (Glossary) 29 Hedera nepalensis ‘Suzanne’ 29 Index To Photos 33 LIST OF SPONSORS ADS Mary’s Plant Farm & Landscaping 2 Cliff Finch’s Topiary Zoo 2 San Diego Floral Association 2 Schubert Nursery, Inc. 17 Samia Rose Topiary 28 Commercial Sponsors List inside back cover Cover: Hedera nepalensis 'Suzanne' Photo by Rachel Cobb Not for reprint in any media without written permission from The American Ivy Society. Ivy Journal 2016 Vol. 42 4 www.ivy.org The Pierot Classification System of Ivies (Hedera ) By Dr. Sabina Mueller Sulgrove, Taxonomist, American Ivy Society (AIS) For convenience and as an aid in identification, ivies can be roughly divided into categories based on leaf shape, size, or color. Such classification system was first developed by Suzanne Warner Pierot in her 1974 publication, The Ivy Book, amplified in the second edition, 1995, and by the American Ivy Society in 1977. The system is called the Pierot Classification System. This classification system is one of convenience, not exactness. This means that a certain amount of latitude is necessary in envisioning a “Heart-Shaped Ivy”, because not all ivies that are assigned to this category will have a “heart shaped” leaf, that is, a broadly ovate outline, a pointed tip, and a heart-shaped base. Nor do all Bird’s Foot ivies have three or five narrow lobes; some have only a single, narrow, unlobed leaf, as in H.h. ‘Leo Swicegood’. But with a little bit of experience in dealing with the different ivies, it is possible to place each ivy cultivar into the correct Pierot classification. A particular ivy may belong to more than one category, such as Hedera helix ‘Lady Frances’ which is a Miniature Ivy (M) as well as a Variegated Ivy (V) and a Bird’s Foot Ivy (BF), the classification for ‘Lady Frances therefore is (M, V, BF). The Ivy-Ivies, Oddities, and Adult Ivies By Russell A. Windle, Director of Research Ivy-Ivies (I) as the name implies, are ivies that have a typical ivy shaped leaf, with pronounced terminal, lateral, and basal lobes, such as Hedera helix ‘Pittsburgh’ Oddities (O) are ivies that have unusual forms, such as fasciated, (flattened, compacted) stems, or distorted leaves, such as Hedera helix ‘Congesta’, or simply do not fit into one of the other classes. Adult, Aborescent (A) Hedera has two distinct growth forms, the juvenile, which is the vining form we usually think of, and the adult form, in which the plants have lost their vining juvenile habit, and have stiff upright stems, or nearly so, and are capable of flowering and producing seeds. Some of my favorite ivies fit into these catagories. Hedera helix ‘Medusa’, one of my favorite ivies, has an unusual growth habit, with many differently shaped leaves. AIS in 2010 began publishing this photographic reference collection of ivy (Hedera). The 2010 issue described and had photographs of the species of Hedera other than H. helix, H. algeriensis, H. azorica, H. canariensis, H. colchica, H. cypria, continued page 30 Not for reprint in any media without written permission from The American Ivy Society. Ivy Journal 2016 Vol. 42 5 www.ivy.org IVY Ivies & Oddities Arabesque (O) AIS 95-005 (Ritterkreuz Mutant number 1, Windle,1993) A Hedera etc. exclusive introduction. This mutation of Hedera helix ‘Ritterkreuz’ doesn’t look much like an ivy at all. New growth covered with silvery pubescences. As leaves mature the pubescences turns reddish brown, with the final color medium green as the pubescent wears off. Leaves: five to seven divided narrow lobes, not much wider than the veins. Slow growing, compact plants. Arrowhead (I) AIS 79-402 Leaves broadly triangular about as long as broad with three to barely five lobes. Light green in color. Leaves with a dip or pinch at the base of the leaf where the petiole attaches. Makes long runners. Baltica (I) AIS 83-063 One of the best hardy outdoor ground covers. This is a geographically selected ivy from the Baltics. Leaves medium-sized with three to five lobes and a heart- shaped base. Not for reprint in any media without written permission from The American Ivy Society. Ivy Journal 2016 Vol. 42 6 www.ivy.org Cathedral Wall (H, I) AIS 79-149 This ivy found at the Washington Cathedral, Washington D.C. Its main distinction is a large terminal lobe, which makes the leaf appear drawn out and almost lobe less. Unlobed, heart shaped to three and five lobes, cordate base, with a tapering blunt tip. Moss green Chrysaor (O, V, F) AIS 06-072 This variegated sport from Hedera helix ‘Medusa’ has a stiff upright habit. The stems are fasciated, giving a thickened appearance. The leaves have 3 to 5 forward pointed lobes; the variegation is a bright “Gold Dusting” with splashes of gold, gray and green. This ivy makes an attractive mounding shrub with time. Conglomerata (O) AIS 87-089 This unusual ivy has rounded, wavy, three- lobed leaves with cordate bases on a less pronounced upright habit. Branches are somewhat twisted. Will climb. Good rock garden or bonsai plant. Not for reprint in any media without written permission from The American Ivy Society. Ivy Journal 2016 Vol. 42 7 www.ivy.org H. rhombea ‘Crème de Menthe’ (A) AIS 03-084 This is the adult form of Hedera rhombea ‘Variegata’. The leaves are unlobed with a gray- green center and an irregular white margin. This upright growing shrub, flowers in late summer to fall, and produces bluish black berries in the winter. Dolly (O) AIS 94-016 This new ivy from England has unlobed, lanceolate leaves with a slight wave to the margin, giving the leaf a twisted appearance. Donerailensis (I) AIS 94-017 This three to five-lobed, glossy, dark green ivy came from Doneraile, Ireland, around 1850. This hardy outdoor ivy turns a deep wine-red in winter.