New Species, New Combinations, and Lectotypifications in New Caledonian Eugenia L. (Myrtaceae) Neil Snow John W. Dawson Martin W. Callmander Kanchi Gandhi Jérôme Munzinge Candollea 2016 2016-03-31 71 1 67 81 3C6JX J.W. Dawson & N. Snow J.W. Dawson & N. Snow [136,631,1158,1182] Magnoliopsida Myrtaceae Eugenia Plantae Myrtales 10 76 Tracheophyta species tiwakaensis sp. nov.  ( Fig. 1, 6).    Typus:   New CaledoNia. Prov. Nord: Basse Tiwaka,  10 m,  1.I.1979,  MacKee36340( holo-: P[ P04722500]!).   Distinct among congenerics in New Caledoniaby its cordate to basally rounded, petiolate leaves, secondary veins arising from ca. 10-20̊ angles, glandular abaxial leaf surfaces, raised adaxial midrib, and sparsely to moderately densely short-villous ferrugineous indumentum of the inflorescence axis and flowers.   Shrubsto  2 m.Indumentum (where present) ferrugineous, sparsely to moderately short-villous (“hairy” below). Branchlets rounded to slightly compressed, moderately to densely short-villous (trichomes ferrugineous at base but often clear or whitish apically), the epidermis sometimes slightly furrowed longitudinally and soon becoming flaky. Leavespetiolate, coriaceous, venation brochidodromous, glabrescent, slightly discolorous, surfaces matte or somewhat glossy above, evenly distributed along branchlets. Foliar colleters not seen. Petioles 4-7 mm, sulcate above, eglandular. Leaf blades10.0-14.6 X 3.5-5.7 cm, narrowly elliptic to narrowly ovate, base rounded or cordate, apex acute, margin flat; adaxial surface glabrescent near base but otherwise glabrous, eglandular, midvein narrowly and slightly projecting proximally but becoming flush distally, secondary and tertiary veins prominent and slightly projecting (dried material); abaxial surface glabrous, oil glands common and distinct; secondary veins prominent, intramarginal vein prominent and 3-6 mmfrom margin at midpoint of blade (also visible adaxially). Inflorescencesterminal, axillary or ramiflorous; flowers solitary, paired, fascicled, or in short brachyblasts. Peduncles 4-12 mm, rigid, more or less ascending, hairy. Bracteoles2, 1.0- 1.2 mm, triangular, ascending to erect and appressed against hypanthium, glandular above, hairy, soon deciduous. Hypanthium 3-4 mm, obconic, prominently glandular, sparsely to moderately hairy. Calyx lobes4, 2- 3 mm, broadly rounded, prominently glandular, ciliate and sparsely hairy below. Petals4, 5- 9 X 3-5 mm, obovate, sparsely short ciliate, glands sparse. Stamensca. 75-125, multiseriate; filaments 5-8 mm; anthers 1.0- 1.2 mm, globose to subellipsoid, sub-basifixed, eglandular; staminal disc short-villous. Ovary apex (surrounding style) glabrous. Stylelength not confirmed (but glabrous below). Fruitnot seen but said to be reddish.   Distribution and ecology. ‒ Eugenia tiwakaensisat present is known only from two collections near the northwest coast, growing in a transitional zone between schistes and serpentines or over ultramafics from ca. 10 mto an unspecified “middle altitude” (Vandrot 629)on Tiwaka ( Fig. 2). Flowering in January, fruiting in September.   Conservation status. ‒The recent collection (Vandrot 629)indicates the species is a common local shrub in a very small patch of remnant forest of ca. 2,931 ha. on a plateau that was nearly completely burned. The MacKee locality “basse Tiwaka, 10 m” is vague, but this general area has been burned widely and intentionally during political protests over the past 35 years. With only three recent collections from a single reliable location in a highly threatened forest remnant,  E. tiwakaensisis assigned a preliminary IUCN conservation status of “Critically Endangered” [CR B1ab(v)+2ab(v) +2(a) +D].   Notes. ‒ Eugenia tiwakaensismost closely resembles  E. sicifolia,although the triangular bracteoles and broadly rounded calyx lobes of  E. tiwakaensisdiffer from the linear and proportionally longer bracteoles and acute calyx lobes of  E. sicifolia.A note on the holotypelabel indicates the plant was frequented by bees.     Paratypus.‒  New CaledoNia. Prov. Nord: Tiwaka, Plateau de Kokingone,  29.IX.2012, 165°13’57’’E 20°51’35’’S,  365 m,  Vandrot629( NOU[ NOU079951], P[ P02089724]). 3467610304 1979-01-01 P MacKee New Caledonia 10 Basse Tiwaka Prov. Nord 10 76 P04722500 1 holotype 3467610325 2012-09-29 NOU, P Vandrot New Caledonia 365 -20.859722 Tiwaka 21 165.2325 Prov. Nord 10 76 NOU079951, P02089724 1 paratype