The Magazine of the Arnold Arboretum VOLUME 72 • NUMBER 2 The Magazine of the Arnold Arboretum VOLUME 72 • NUMBER 2 • 2014 CONTENTS Arnoldia (ISSN 0004–2633; USPS 866–100) 2 Hamamelidaceae, Part 1: Exploring the is published quarterly by the Arnold Arboretum Witch-hazels of the Arnold Arboretum of Harvard University. Periodicals postage paid Andrew Gapinski at Boston, Massachusetts. Subscriptions are $20.00 per calendar year 18 Did American Chestnut Really Dominate domestic, $25.00 foreign, payable in advance. the Eastern Forest? Remittances may be made in U.S. dollars, by check drawn on a U.S. bank; by international Edward K. Faison and David R. Foster money order; or by Visa, Mastercard, or American Express. Send orders, remittances, requests to 33 Reading Tree Roots for Clues: The Habits purchase back issues, change-of-address notices, of Truffles and Other Ectomycorrhizal and all other subscription-related communica- Cup Fungi tions to Circulation Manager, Arnoldia, Arnold Rosanne Healy Arboretum, 125 Arborway, Boston, MA 02130- 3500. Telephone 617.524.1718; fax 617.524.1418; e-mail
[email protected] 40 The Castor Aralia, Kalopanax septemlobus Arnold Arboretum members receive a subscrip- Kyle Port tion to Arnoldia as a membership benefit. To become a member or receive more information, Front cover: Flowers of a hybrid witch-hazel cultivar, please call Wendy Krauss at 617.384.5766 or Hamamelis × intermedia ‘Jelena’ (accession 462-65-A). email
[email protected] Photo by Kyle Port. Postmaster: Send address changes to Inside front cover: Illustration of American chestnut Arnoldia Circulation Manager (Castanea dentata) from François André Michaux’s The Arnold Arboretum The North American Sylva, Volume 3, published in 125 Arborway 1819.