Gossia aphthosa subsp. aphthosa

Snow, Neil, 2020, A revision of New Caledonian Gossia N. Snow & Guymer (Myrtaceae), Adansonia (3) 42 (7), pp. 131-177 : 140

Gossia aphthosa subsp. aphthosa

( Figs 4D-G ; 5 )

SPECIMENS EXAMINED. — New Caledonia. North Prov. Plateau du Col des Roussettes route forestière près de Riv Ouen – Sieu, 21°25’45.19”S, 165°27’15.01”E, 29.IX.1964, Blanchon 994 (NOU[NOU029700], P[P00462860]); Touho, Ponandou, 20°49’12.00”S, 165°13’45.12”E, 15.V.1973, MacKee 26722 ( NOU [ NOU053234 ]) ; Tiwaka: Pente Sud, Inédète, 250 m, 30.III.1974, MacKee 28444 ( NOU [ NOU029696 ], P[P06668973]) ; Ponandou, le Captage, 27.X.2005, Munzinger 3084 et al. (P[P05121899], WELTU) .

REPRESENTATIVE HERBARIUM SPECIMEN. — P 05121899.

DISTRIBUTION, HABITAT AND PHENOLOGY. — Central and northeast parts of Grande Terre; over micaschistes and gneiss, 250 m.

REMARKS

A reliable diagnostic character is the corky swellings surrounding the base of the petioles ( Fig. 4D-E, G ). The hypanthium of some (e.g., MacKee 28444) can be prominently sericeous; the leaf blades of some appear to be only thinly coriaceous (e.g., Munzinger 3084).

Figures

FIG. 4. — A-C, Gossia angustifolia N. Snow, sp. nov.: A, branch; B, inflorescence in part; C, flower with petals and stamens removed, and in longitudinal section at left; D-G, Gossia aphthosa (Vieill. ex Brongn. & Gris) N. Snow subsp. aphthosa: D, branch showing leaves with corky swellings at base of leaf and ramiflorous inflorescences; E, detail of corky swellings; F, detail of flower with reflexed petals; G, remnants of inflorescence in axil (with corky swellings) of dehisced leaf; H-J, Gossia bourailensis N. Snow, sp. nov.: H, branch with inflorescences; I, detail of flower bud; J, detail of flower with petals removed showing calyx lobes, staminal ring, hairy ovary apex, and style with proximal pubescence. Vouchers: A-C, MacKee 33461 (NOU); D, F, MacKee 28444 (P); E-G, MacKee 26722 (NOU); H-J, Balansa 1516a (P); K, Veillon 5958 (NOU); J, MacKee 5328 (P). Scale bars: A, D, E, G, H, 2 cm; B, 5 mm; C, F, I, J, 3 mm.

FIG. 5. — Distribution map for subspecies of Gossia aphthosa (Brongn. & Gris) N. Snow.