Synopsis of Storckiella Seem. (Fabaceae, Caesalpinioideae) With
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Synopsis of Storckiella Seem. (Fabaceae,Caesalpinioideae) with description of a new species and a new subspecies from New Caledonia Ivan C. NIELSEN Department of Biological Sciences, University of Aarhus, Ny Munkegade Building 540, DK-8000 Aarhus (Denmark) [email protected] Jean-Noël LABAT Muséum national d’Histoire naturelle, Département Systématique et Évolution, USM 602/UMS 270 CNRS, Phanérogamie, case postale 39, 16 rue Buffon, F-75231 Paris cedex 05 (France) [email protected] Jérôme MUNZINGER Laboratoire de Botanique, Institut de Recherche pour le Développement, BP A5, 98848 Nouméa cedex (New Caledonia) [email protected] ABSTRACT Notes on the morphological variation in New Caledonian Storckiella Seem. (Fabaceae, Caesalpinioideae) and a revision of the New Caledonian species are presented as well as a key to all four species of the genus. S. neocaledonica I.C.Nielsen, Labat & Munzinger is described as new and is characterized by having five to seven leaflets with obtuse and retuse apex, white to cream coloured petals, 10-14 stamens, and the ovary only puberulous in the proxi- KEY WORDS Leguminosae, mal part and along both sutures. S. pancheri subsp. acuta I.C.Nielsen, Labat Caesalpinioideae, & Munzinger is described as new and is characterized by its acute-acuminate, Storckiella , chartaceous to rigidly chartaceous leaflets, unlike subsp. pancheri which has New Caledonia, new species, obtuse and retuse, coriaceous leaflets. One species, S. comptonii Baker f. is new subspecies. reduced to synonymy under S. pancheri Baill. subsp. pancheri . RÉSUMÉ Synopsis de Storckiella Seem. (Fabaceae, Caesalpinioideae) et description d’une espèce et d’une sous-espèce nouvelles de Nouvelle-Calédonie. Des notes sur la variation morphologique de Storckiella Seem. (Fabaceae, Caesalpinioideae) en Nouvelle-Calédonie et une révision des espèces sont pré- sentées, ainsi qu’une clé d’identification pour les quatre espèces connues du ADANSONIA, sér. 3 • 2005 • 27 (2) : 217-230 © Publications Scientifiques du Muséum national d’Histoire naturelle, Paris. 217 Nielsen I.C. et al. genre. Une nouvelle espèce, S. neocaledonica I.C.Nielsen, Labat & Munzinger, est décrite, celle-ci se caractérise par ses feuilles à cinq ou sept folioles, avec un apex obtu et retus, ses pétales blanc à crème, ses 10-14 éta- mines et son ovaire uniquement pubérulent dans sa partie proximale et le long des deux sutures. S. pancheri subsp. acuta I.C.Nielsen, Labat & MOTS CLÉS Leguminosae, Munzinger est décrite comme nouvelle sous-espèce et se distingue par ses Caesalpinioideae, folioles aiguës-acuminées et chartacées ou chartacées rigides, contrairement à Storckiella , la subsp. pancheri dont les folioles sont obtuses, retuses et coriaces. Une Nouvelle-Calédonie, nouvelle espèce, espèce, S.comptonii Baker f., est mise en synonymie avec S. pancheri Baill. nouvelle sous-espèce. subsp. pancheri . INTRODUCTION Caledonia, although in the first of these papers he had noted the difference in leaflet morphology The genus Storckiella belongs to the tribe between the specimens from Fiji and those from Cassieae, subtribe Dialiinae I RWIN & B ARNEBY New Caledonia. The range extension of S. vitien- (1981). It was described by S EEMAN (1861) and sis was considered doubtful by A.C. S MITH named in honour of his assistant Jacob S TORCK . (1985: 100) who, after correspondence with the The genus, then monotypic, was based on late H.S. M ACK EE, indicated that the New S.vitiensis from Fiji. Storckiella vitiensis was Caledonian specimens with 10 or more stamens described as having 10-12 stamens, but according belong to a distinct species, which is described to S MITH (1985) specimens with up to 15 sta- below. mens have now been found. The low number of stamens (four) in New Caledonian material, which was sent to H. B AILLON in Paris by SYSTEMATICS M UELLER prompted B AILLON (1869) to base the second species in the genus Storckiella pancheri on STORCKIELLA Seem. that material. It was referred to the section Doga. B AILLON (1869: 205) noted that the local name Bonplandia 9: 363, t. 6 (tab. XIII) (1861); Seeman, for the species was Doga , and thus, that name Fl. Vit.: 68 (1865); Bentham & Hooker, Gen. Pl. 1/2: 571 (1865); Baillon, Adansonia 9: 204 (1869); might serve as generic name for the New Cale- Taubert in Engler & Prantl, Nat. Pflanzenfam. 3 (3): donian species, if its characters later on proved to 164 (1892); Guillaumin, Bull. Soc. bot. France 83: be sufficient: “[…] Si l’on juge des caractères 108 (1936); Guillaumin, Flore analytique et synop- suffisants pour l’élever plus tard au rang de genre, tique de la Nouvelle-Calédonie: 156 (1948); Hutchinson, Gen. Pl. 1: 228 (1964); Irwin & Barneby on devra la nommer ”. B AILLON Doga Pancheri in Polhill & Raven (eds), Adv. Leg. Syst. 1: 101 thus did not describe Doga as a new genus but (1981); Smith, Fl. Vit. Nova: 3: 97 (1985); Ross, Fl. only as a section of Storckiella . B AKER (1921) Australia 12: 73 (1998). — Type: Storckiella vitiensis described a third species S. comptonii Baker f. and Seem. referred it to “Sect. II Doga Baill.”. G UILLAUMIN Storckiella sect Doga Baill., Adansonia 9: 204-205 (1870); Hist. Pl. 2: 132 (1870); Baker, J. Linn. (1936) doubted that S. comptonii was new, but Soc., Bot. 45: 297 (1921). — Type: Storckiella nevertheless kept it as a distinct species in his pancheri Baill. analytical and synoptic flora of New Caledonia (G UILLAUMIN 1948). R OSS & H YLAND (1983) Unarmed trees or tall shrubs. Stipules small described the fourth species S. australiensis , and caducous. Leaves imparipinnate; leaflets which is endemic to Queensland, Australia. opposite or alternate, petiolulate, chartaceous or G UILLAUMIN (1911, 1948) expanded the range of coriaceous. Inflorescence paniculate, terminal or S. vitiensis to including material from New axillary. Flowers bisexual, actinomorphic or 218 ADANSONIA, sér. 3 • 2005 • 27 (2) New Storckiella (Fabaceae) from New Caledonia nearly so, bracts and bracteoles caducous. Sepals late; style shortly curved; stigma terminal, small. 3-5 subequal or the outer two slightly larger, Fruit oblong to reniform or slightly falcate, later- imbricate. Petals 3-5, with upper inner petal ally compressed, winged along the ventral suture, sometimes absent, alternating with the sepals, 2-valved, coriaceous, dehiscent but sometimes subequal. Stamens 4-10(-15), free, all fertile; fila- tardily so. Seeds compressed, 1-5. ments filiform; anthers linear, basifixed; locules A genus of four species, one endemic to North opening at the apex by short lateral slits. Ovary Queensland, Australia, one endemic to Fiji, and sessile or nearly so, free, 1-chambered, 4-6-ovu- two species endemic to New Caledonia. Key to the species of Storckiella Seem. 1. Sepals 5, rusty sericeous, filaments 0.8-1.2 mm long, base of leaflets cuneate. Queensland, Australia .......... ............................................................................................................................................ 3. S. australiensis 1’. Sepals (3-)4-5, yellowish puberulous, filaments 6-10(-11) mm long, base of leaflets obtuse, truncate or cordate ...................................................................................................................................................... 2 2.Petals broadly elliptic, more or less oblique, 4.7-5 mm wide, ovary glabrous, leaflets acuminate to cuspidate, not lanceolate. Fiji .................................................................................................................. 4. S. vitiensis 2’. Petals narrowly elliptic to lanceolate(-linear), 1.6-4.5 mm wide, ovary woolly-sericeous all over or puberu- lous along the sutures and in the proximal part only, leaflets obtuse to acute, if acuminate then lanceolate. New Caledonia ........................................................................................................................................ 3 3.Stamens 10-14, ovary puberulous in the proximal portion and along the sutures only, flowers white to cream, leaflets 5-7 per pinna ........................................................................................ 1. S. neocaledonica 3’. Stamens 4-5, ovary woolly to sericeous throughout, flowers yellow, leaflets 7-13 per pinna.... 2. S. pancheri Clé des espèces de Storckiella Seem. 1. Sépales 5, roux soyeux, filets des étamines de 0,8-1,2 mm de longueur, base des folioles cunée. Queensland, Australie .......................................................................................................................... 3. S. australiensis 1’. Sépales (3-)4-5, jaunâtres pubérulents, filets des étamines de 6-10(-11) mm de longueur, base des folioles obtuse, tronquée ou cordée ...................................................................................................................... 2 2.Pétales largement elliptiques, plus ou moins obliques, 4,7-5 mm de largeur, ovaire glabre, folioles acuminées à cuspidées, non lancéolées. Fiji .............................................................................................. 4. S. vitiensis 2’. Pétales étroitement elliptiques à lancéolés(-linéaires), 1,6-4,5 mm de largeur, ovaire complètement laineux- soyeux ou pubérulent uniquement dans la partie proximale et le long des sutures, folioles obtuses à aiguës, si acuminées alors lancéolées. Nouvelle-Calédonie ........................................................................................ 3 3.Étamines 10-14, ovaire pubérulent uniquement dans la partie proximale et le long des