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A New Species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand

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A New Species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/233230386 A new species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand Article in New Zealand Journal of Botany · March 2003 DOI: 10.1080/0028825X.2003.9512829 CITATIONS READS 12 159 3 authors: Peter James de Lange Peter B Heenan UNITEC Institute of Technology Manaaki Whenua - Landcare Research 416 PUBLICATIONS 4,118 CITATIONS 224 PUBLICATIONS 3,105 CITATIONS SEE PROFILE SEE PROFILE Murray Ian Dawson Manaaki Whenua - Landcare Research 75 PUBLICATIONS 912 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Hibiscus trionum View project Domestication of endemic New Zealand plants View project All content following this page was uploaded by Peter B Heenan on 21 May 2014. The user has requested enhancement of the downloaded file. This article was downloaded by: [Landcare Research New Zealand] On: 18 October 2012, At: 12:56 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK New Zealand Journal of Botany Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/tnzb20 A new species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand P. J. De LANGE a , P. B. Heenan b & M. I. Dawson b a Science & Research Unit, Department of Conservation, Private Bag 68908, Newton, Auckland, New Zealand b Landcare Research, P.O. Box 69, Lincoln, 8152, New Zealand Version of record first published: 17 Mar 2010. To cite this article: P. J. De LANGE, P. B. Heenan & M. I. Dawson (2003): A new species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand, New Zealand Journal of Botany, 41:1, 13-21 To link to this article: http://dx.doi.org/10.1080/0028825X.2003.9512829 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.tandfonline.com/page/terms-and-conditions This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae, and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand, or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material. New Zealand Journal of Botany, 2003, Vol. 41: 13-21 13 0028-825X/03/4101-0013 $7.00 © The Royal Society of New Zealand 2003 A new species of Leucopogon (Ericaceae) from the Surville Cliffs, North Cape, New Zealand P. J. de LANGE Keywords Ericaceae; Leucopogon; L. parviflorus; Science & Research Unit L. xerampelinus; L. fasciculatus; new species; Department of Conservation taxonomy; cytology; conservation; ultramafic Private Bag 68908 vegetation; New Zealand flora Newton Auckland, New Zealand P. B. HEENAN INTRODUCTION M. I. DAWSON The Surville Cliffs, North Cape, New Zealand Landcare Research (34°23'S, 173°01'E), with only 120 ha of ultramafic P.O. Box 69 rocks (Fig. 1), support a greater number of endemic Lincoln 8152, New Zealand vascular plants than perhaps any other similar-sized area of New Zealand (Michie 1957; Druce et al. 1979; de Lange & Heenan 2001). Eleven taxa Abstract A new ultramafic endemic Leucopogon (excluding Coprosma neglecta which also grows on xerampelinus is named from the Surville Cliffs, non-ultramafic rocks) are endemic to the area North Cape, New Zealand. The Surville Cliffs (Cheeseman 1897a,b, 1906, 1912; de Lange 1997, population has previously been referred to 1998; de Lange & Heenan 1997, 2001; Heads & de Leucopogon parviflorus, from which it differs by its Lange 1999; Heenan & de Lange 2001; de Lange & prostrate, trailing habit, reddish leaf colour, smaller Gardner 2002), and the taxonomic status of several flowers, and restriction to ultramafic rocks. other vascular plants restricted to the cliffs requires However, we consider that the floral and vegetative clarification. One of these is a Leucopogon, which morphology indicates that it may be more closely has previously been included under Leucopogon related to L.fasciculatus. Leucopogon xerampelinus parviflorus (e.g., Connor & Edgar 1987) and its is a common shrub of the plateau, gully heads, and synonyms (e.g., Cheeseman 1925, asL. richei; Allan cliff faces of its ultramafic habitat. Although the new 1961, as Cyathodes parviflora), or treated as an species is entirely restricted to the 120 ha exposure unnamed taxon (e.g., Eagle 1982; de Lange et al. of ultramafic rocks at North Cape, within this area 1999). it is very common. Possible long-term threats include Since 1990, we have studied herbarium the spread of weeds, and damage from some specimens and plants growing in the wild and in browsing mammals. As such the conservation status cultivation of the Surville Cliffs Leucopogon, and Downloaded by [Landcare Research New Zealand] at 12:56 18 October 2012 is assessed as "At Risk/Range Restricted". compared it critically with material of L. parviflorus sens. str. from its known distribution in the Chatham Islands, Tasmania, and the Australian mainland. The Surville Cliffs population consistently differs in its much smaller, prostrate, semi-rambling growth form, pink or reddish brown foliage, smaller flowers, pink or red fruit, and its restriction to ultramafic rocks. As these morphological differences are retained in cultivation (Michie 1957; authors pers. obs.), we consider the Surville Cliffs plants distinct from L. B02033; published 31 March 2003 parviflorus sens. str. and therefore describe them as Received 11 April 2002; accepted 11 November 2002 a new species. 14 New Zealand Journal of Botany, 2003, Vol. 41 Fig. 1 Location of the Surville Cliffs showing the 120 ha New exposure of the Tangihua Cape Zealand 35°- Reinga Ophiolite, the only known habitat North Cape of Leucopogon xerampelinus. 40"S- ikari South Island 45° - Awanui Q~^ 10 20 30km 175°E 180' ' <xiailaia Tangihua Ophiolite (ultramafic rocks) habitat of Surville Cliffs Leucopogon xerampelinus North Cape MATERIALS AND METHODS by PdL from Rosebud, Mornington Peninsula The decisions reached in this paper are based on the (38°21'S, 144°55'E). Seedlings and cutting-grown study of specimens and type material held at AK, plants from Cape Portland, Petal Point, Tasmania Downloaded by [Landcare Research New Zealand] at 12:56 18 October 2012 AKU, BM, CHR, HO, K, NSW, MEL, and WAIK. (Landcare Research Accession G465/98), the Live specimens of Leucopogon parviflorus sens. lat. Surville Cliffs, and Chatham Island were cultivated were also examined and collected in New Zealand and studied between 1984 and 2002 at the by PdL at the Surville Cliffs (34°23'S, 173°01Ti) and experimental gardens at Landcare Research in on Chatham (Rekohu) Island by PdL at Long Beach Lincoln, the University of Auckland, Percy Reserve (Te Henga) (43°51'S, 176°36'W), Taupeka (43°43'S, in Petone, and the authors' gardens. 176°27'W), Ocean Mail (43°45'S, 176°25'W), and at The plant material grown at the Landcare Kaingaroa Road (43°45'S, 176°23'W). In Australia, Research experimental gardens was used by MID for plants were studied and specimens collected from chromosome counts. Cytology voucher specimens Tasmania by PdL at Bream Creek (42°49'S, are deposited in the Landcare Research herbarium 147°52'E), Dunalley Beach (42°54'S, 147°49Ti), (CHR). Mitotic chromosome preparations were and Long Point (41°45'S, 148° ITE), and in Victoria made from root tips following the technique of by PBH at Lakes Entrance (37°53'S, 144°08Ti) and Dawson (1993). de Lange et al.—Leucopogon xerampelinus sp. nov. 15 Fig. 2 Holotype of Leucopogon xerampelinus (P. J. de Lange 3050, AK 229536). Downloaded by [Landcare Research New Zealand] at 12:56 18 October 2012 TAXONOMY = Perojoa Cav. Icon. 4, 29 (1797). Lectotype species: P. microphylla Cav. Leucopogon R.Br. nom. cons. Prod. Fl. Nov. Holl., 541 (1810) (fide Greuter et al. 1993) Leucopogon xerampelinus de Lange, Heenan et Lectotype species: L. lanceolatus R.Br., nom. illeg. M.I.Dawson, sp. nov. (Styphelia parviflora Andrews, L. parviflorus DIAGNOSIS: AL.parviflori (Andrews) Lindl. habitu (Andrews) Lindl.) (fide Greuter et al. 1993). prostrata serpenti, foliis porphyreis, floribus 16 New Zealand Journal of Botany, 2003, Vol. 41 minoribus et habitatione ad petras ultramaficas raised membranous ridges. FL Sep-Nov; FT Oct- limitatas differt. Apr. Differs from L. parviflorus (Andrews) Lindl. by the CHROMOSOME NUMBER: 2n = 22 (CHR 514899). prostrate, trailing habit, reddish brown foliage, This chromosome count and voucher specimen have smaller flowers, and restriction to ultramafic rocks. previously been reported by Dawson (2000) under HOLOTYPUS (Fig. 2): New Zealand, North Island, Te the name Leucopogon parviflorus. The other Paki Ecological Region and District, Te Paki, North accession listed by Dawson (2000; CHR 514909) Cape Scientific Reserve, Surville Cliffs; P. J. de remains L. parviflorus, and is from the Chatham Lange 3050,11 October 1996; AK 229536 (flowers Islands. and fruit); isotypi: CHR, HO. Sands (1960) appears to have also counted L. DESCRIPTION: Low-growing sprawling subshrub, xerampelinus, but under the name L. richei. She usually up to 20 cm tall and up to 1 m diam. obtained a meiotic count of n = 11 for material from Branches and branchlets prostrate to decumbent; "Coastal cliffs at Kerr Point, North Cape." The name, branchlets c. 1 mm diam., red-brown, with bifarious chromosome number, and location provided by pubescence or ± glabrous.
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