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Download Full Article in PDF Format Nomenclature and typifi cation of names in the endemic genus Pancheria (Cunoniaceae) from New Caledonia Helen C. Fortune HOPKINS Herbarium, Royal Botanic Gardens, Kew, Richmond, TW9 3AB (United Kingdom) [email protected] Jason C. BRADFORD Renewable Energy Development Institute, 121 W. Commercial St., Willits, CA 95490 (USA) [email protected] Hopkins H. C. F. & Bradford J. C. — Nomenclature and typifi cation of names in the endemic genus Pancheria (Cunoniaceae) from New Caledonia. Adansonia, sér. 3, 31 (1) : 103-135. ABSTRACT Th e taxonomic history of Pancheria Brongn. & Gris is described and problems concerning types, including some collected by Montrouzier, Labillardière and Vieillard, are discussed. All names validly published in Pancheria or published under other generic names but referable to Pancheria are reviewed to establish their correct orthography and authorship, and they are lectotypifi ed where necessary. KEY WORDS Invalidly published names are dealt with briefl y. Th e names P. humboldtiana Guil- Cunoniaceae, laumin ex H.C.Hopkins & J.Bradford, sp. nov., and P. multijuga Guillaumin ex Pancheria, H.C.Hopkins & J.Bradford, sp. nov., are validated by the designation of holotypes. New Caledonia, nomenclature, An index lists all names referable to Pancheria and indicates their synonymy. Th e typifi cation. geographical position of Balansa’s collecting locality Mt Mi is discussed. RÉSUMÉ Nomenclature et typifi cation des noms dans le genre Pancheria (Cunoniaceae) endémique de Nouvelle-Calédonie. L’histoire taxonomique de Pancheria Brongn. & Gris est récapitulée et tous les problèmes concernant les types, y compris quelques uns récoltés par Montrouzier, Labillardière et Vieillard, sont discutés. Tous les noms valablement publiés sous Pancheria, ou publiés dans d’autres genres mais devant être rapportés à Pancheria, sont discutés afi n d’établir leurs orthographes correctes et leurs auteurs, et sont au besoin lectotypifi és. Les noms non valablement publiés sont brièvement pris MOTS CLÉS en compte. Pancheria humboldtiana Guillaumin ex H.C.Hopkins & J.Bradford, Cunoniaceae, sp. nov., et P. multijuga Guillaumin ex H.C.Hopkins & J.Bradford, sp. nov., Pancheria, sont établis ici par la désignation d’holotypes. Un index présente tous les noms Nouvelle-Calédonie, nomenclature, qui se réfèrent à Pancheria et indique leur synonymie. La position géographique typifi cation. de la localité de récolte, Mt Mi, de Balansa est discutée. ADANSONIA, sér. 3 • 2009 • 31 (1) © Publications Scientifi ques du Muséum national d’Histoire naturelle, Paris. www.adansonia.com 103 Hopkins H. C. F. & Bradford J. C. INTRODUCTION Th e fact that Pancheria is dioecious is a further complication in typifi cation. A survey of more than Th is is the third in a series of papers on Cunoniaceae 1000 herbarium specimens of Pancheria at P and K from New Caledonia whose purpose is to establish in 2005 showed that almost all species appear to be the validity, authorship and orthography of names strictly dioecious or at least do not present evidence and to designate lectotypes where appropriate, in of a sexual system other than dioecy. Exceptions to this case for the genus Pancheria Brongn. & Gris. this were seen in P. elegans Brongn. & Gris, where All specifi c and infraspecifi c names referable to capitula with male fl owers are occasionally attached Pancheria are reviewed. Two names invalidly pub- to the same stem as female capitula, and very rarely lished by Guillaumin (1964) are validated here but sheets in other species have male fl owers and old names for completely new taxa will be published fruits attached to the same stem. For this reason, separately (Hopkins et al. in press). where type material with a single number has sepa- Pancheria consists of some 26 species and is cur- rate male and female fragments, they are assumed rently the largest genus endemic to New Caledonia to have come from diff erent plants and material of (Jaff ré et al. 2001). It occurs on the main island only one sex is designated as a lectotype. of Grande Terre and a few adjacent small islands, Several names treated as distinct by Guillaumin including Île des Pins and Îles Belep (including Île (1941, 1948) are put into synonymy here and three Art), and like other Cunoniaceae, is absent from factors are signifi cant in determining how many the calcareous Loyalty Islands to the east. Panche- species can be recognised. Firstly, some species with ria species usually have whorled leaves, which are variable adult foliage have been described more than simple or imparipinnate (including trifoliolate), once (Pancheria beauverdiana Pamp., P. billardierei generally with toothed margins, and the fl owers are (D.Don) Pamp., P. ternata Brongn. & Gris). Secondly, organised into unisexual capitula (Bradford et al. as in many Cunoniaceae, the foliage on juvenile and 2004). Pancheria (tribe Cunonieae) has sometimes regrowth shoots of Pancheria can diff er markedly from been confused with Codia J.R.Forst. & G.Forst. that on fertile shoots of adult plants and at least one (tribe Codieae), which is also endemic to New name appears to be based on juvenile foliage (P. pin- Caledonia and has fl owers in capitula, but the two nata Pamp. var. pinnata). (In juveniles and regrowth are not closely related. Diff erences between them shoots the leaves can be much larger than in the adults are given in Hopkins et al. (2007). and/or the form of the blade may be diff erent, e.g., Many of the problems in the nomenclature and compound in juveniles and simple in adults, or if typifi cation of names in Pancheria are similar to those compound in both, then with more pairs of leafl ets in Codia and Geissois Labill. (Hopkins 2005, 2006), in juveniles, and the stipules are often larger and more though some names and types are even more mud- persistent on juvenile stems.) Th irdly, as in Cunonia dled. We discuss problems and specimens in detail L. (Pillon et al. 2009), rare specimens with leaf irregu- in the hope that this will not need to be done again. larities and/or intermediate morphology suggest that Types and other collections have been studied at P, some species of Pancheria hybridize and a few names G, BM and K, with selected material from RO, and may perhaps be based on hybrids. However, as yet we images of specimens have been received from B, FI have no molecular evidence to confi rm hybridization and MPU. For some names there will be duplicates in Pancheria nor to show whether suspected hybrids of type material in other herbaria, but identifying are ephemeral F1 individuals or more persistent, fer- whole sheets or fragments as types must be done tile entities that can usefully be named. Two possible with attention not only to the collector’s name and hybrid species are maintained, P. heterophylla Vieill. number, but also the date and place of collection, ex Guillaumin, which has some leaf irregularities, and by comparison with material designated here and P. lanceolata (Pamp.) Baker f., which has leaves as a lectotype or an isolectotype. Images of types intermediate between those of two other species but at P can be viewed via the SONNERAT website does not show irregularities. Both P. heterophylla and (http://coldb.mnhn.fr/colweb/TreeView.do). P. lanceolata are morphologically distinct and strik- 104 ADANSONIA, sér. 3 • 2009 • 31 (1) Nomenclature of Pancheria (Cunoniaceae) in New Caledonia ingly diff erent from their putative parents and each is s.loc., IV-V.1793, ♂ fl ., P! P00143052, also P. bil- known from a handful of collections. A third possible lardierei). hybrid entity, “P. alaternoides var. angustifolia”, is not Th e next collections of Pancheria were made by maintained (see Invalidly published names). Montrouzier from Île Art and described by him un- Th e format of this paper is similar to previous der the name Callicoma ternata. Montrouzier was a ones dealing with names and types in Codia and missionary on Île Art in 1857 and he eventually spent Geissois (Hopkins 2005, 2006). Validly published over 50 years in the south-west Pacifi c (Beauvisage names are treated alphabetically with names based 1898). He was based in New Caledonia from 1853 on the same type treated together under the ac- onwards, visiting numerous localities including Ba- cepted name. Th is is followed by a brief account of lade, Canala, Ducos, Hienghène, Île des Pins, Lifou, invalid names, and fi nally an index lists all names Nouméa, Paita and Tiaré, and he died at Saint-Louis referable to Pancheria and indicates their synonymy, near Nouméa in 1897. His botanical collections were although for P. billardierei and P. ternata Brongn. & made mostly during his early years in New Caledo- Gris, variation and synonymy are not discussed in nia since he later became more interested in zoology detail. Th e International Plant Names Index (IPNI) (Beauvisage 1898; Guillaumin 1911a; McKee 1966). (http://www.ipni.org, consulted April 2006) listed Although some of Montrouzier’s collections from Île 38 binomials for Pancheria and in addition, several Art have been lost (see discussion of Callicoma ternata), varietal names are not included there. Th ese names a few collections of Cunoniaceae made by him exist, refer to some 23 species and descriptions of three including Montrouzier 117 (P. ternata, see discussion new species are in press. of C. ternata), Montrouzier 120 (P. alaternoides) and Montrouzier 122 (P. elegans), all in herb. Monsp. (i.e. Montpellier) according to Guillaumin & Beauvisage TAXONOMIC HISTORY OF PANCHERIA (1914: 89), as well as a Geissois and two species of Codia. Th e collection data for some of these specimens Th e earliest collections of plants belonging to Panche- are not known to us but it is clear that Montrouzier ria were made during d’Entrecasteaux’s voyage to collected plants in New Caledonian localities besides the south-west Pacifi c in search of La Pérouse.
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