A revision of New Caledonian Gossia N. Snow & Guymer (Myrtaceae) Author Snow, Neil Department of Biology, T. M. Sperry Herbarium 1701 S. Broadway St., Pittsburg State University Pittsburg, KS 66762 (United States) nsnow@pittstate.edu text Adansonia 2020 3 2020-04-27 42 7 131 177 journal article 10.5252/adansonia2020v42a7 f7482a89-9b90-4604-8d8f-2be9083f2161 1639-4798 3877392 Gossia conspicua (Vieill. ex Guillaumin) N. Snow , comb. nov. ( Figs 12H-K ; 14 ) Myrtus conspicua Vieill. ex Guillaumin, Bulletin de la Société botanique de France 85: 631 (1939). — Austromyrtus conspicua (Guillaumin) Burret, Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem 15: 505 (1941). — Gossia alaternoides (Brongn. & Gris) var. conspicua (Vieill. ex Guillaumin) N. Snow, Austrobaileya 8: 180 (2010). — Typus: New Caledonia . Grande Terre , South Prov ., Montagne de Ouatendé près Gatope , E.Vieillard 2618 ( holo- , P [ P00602574 ]; iso-, G[G00341336, image seen], GH[GH00255460], P[P00462848, P00462849]). REPRESENTATIVE HERBARIUM SPECIMEN. — P00602574. ETYMOLOGY. — Derivation uncertain. DISTRIBUTION, HABITAT AND PHENOLOGY. — Southeast on Grande Terre ( Fig. 14 ) in maquis over ultramafics, c. 800-1350 m , and from the northwest at Oua Tilou and Point d’As; flowering December to May; fruiting confirmed January through November. SPECIMENS EXAMINED. — New Caledonia . North Prov., Vallée supérieure de la Riv. Voh, 24.IV.1951 , Baumann-Bodenheim 12105 (P[P00462818], US, Z); Versant N de l’Oua Tilou , 14.IV.1951 , Guillaumin & Baumann-Bodenheim 12361 (P[P00462819], RSA , US , Z) ; Slopes of Mt Koniambo , 400-800 m , 31.III.1956 , MacKee 4264 (P[P00462839]) ; Mt. Koniambo , 400 m , 5.I.1961 , MacKee 7965 ( CANB , P[P00462840], US ) ; Crête Sud du Mont Taom , 1000 m , 31.VII.1981 , MacKee 39391 ( NOU [ NOU028914 ], P[P00462842]). — South Prov. , Sommet W du Mt. Humboldt , 1400 m , 21.IX.1951 , Baumann-Bodenheim 15430 (A, BRI , P[P00459521], US , Z) ; Mont Oua tendé, 1868, without collector , (P[P00462846]); Crête de la Montagne des Sources , 8.III.1951 , Hürlimann 1002 (A, P[P00462824], US , Z) ; Sommet Point d’As , 19.XI.1971 , Jaffré 535 ( NOU [ NOU028908 ], P[P00462830]) ; Crête de la Montagne des Sources , 1000 m , 13.III.1951 , MacKee 2237 (P[P00462836]) ; Plateau below Montagne des Sources , 800 m , 23.IX.1956 , MacKee 5328 (L, P[P05221714]) ; Mont Kouakoué , south of summit, forest above creek, 21°57’46”S , 166°32’06”E , 1200 m , 9. V .2006 , McPherson 19407 et al. (KS-P[ KSP004706 ], MO, NOU [ NOU017142 ], P[P06668975]) ; Mont Kouakoué , 1250-1350 m , 30.IV.2006 , Pillon 396 et al. (MO[ MO-04860792 ], NOU [ NOU012051 ], P[P06668688]) ; Mont Kouakoué , 21°58’1”S , 166°32’34”E , 1044 m , 12.I.2002 , Tronchet 604 (MO[ MO-04796930 ], NOU [ NOU004501 ], P[P00354719]) . DESCRIPTION Shrubs 0.2-1.5 m . Internodes Mostly < 5 mm near tips of branchlets. Branchlets Terete, shortly tomentose on emergence but becoming increasingly glabrous. Leaves Stiffly coriaceous, 2-4 per node; petioles 1.5-3.1 mm , sulcate above throughout; blades (1.5-)2.0- 3.1 cm , broadly linear to narrowly elliptic or narrowly obovate, base cuneate, margin strongly recurved throughout, apex retuse, midnerve above sulcate proximally becoming flush distally, the secondary (and less frequently) tertiary veins somewhat raised, oil glands of lower surface present, somewhat sparse and obscure. Inflorescence Less than 1 cm (including flower), pedicels 3.5-6.0 mm, monads axillary, extrafloral bracts absent. Bracteoles 2.6-4.0 mm, linear, soon deciduous. Hypanthium 3-4 mm , obconic, smooth, lanate; ovary apex indumentum unknown. Calyx Lobes 5, 1.6-2.1 mm , broadly triangular to narrowly oblong, lanate. Petals and stamens not seen. Style c. 3 mm (material scant), hairy proximally. Fruits (material scant) 5-6 mm , globose, base rounded, green becoming pale purple to blackish; seeds (only 1 seen) 1 per fruit, c. 3.4 mm . REMARKS The size, shape, texture, strong marginal recurvation, and emergent indumentum of the young leaves of Gossia conspicua comb. nov. most closely resemble Gossia virotii (which see, for details). Although subtle, the nodes can be somewhat swollen, thus resembling small platforms from which the petioles arise (e.g., Tronchet 604 ). One specimen with atypically narrow leaf blades ( MacKee 39391 ) resembles Gossia virotii .