Gossia clusioides (Brongn. & Gris) N. Snow subsp. ploumensis (Däniker) N. Snow 2020

Snow, Neil, 2020, A revision of New Caledonian Gossia N. Snow & Guymer (Myrtaceae), Adansonia 42 (7), pp. 131-177 : 148-149

Gossia clusioides (Brongn. & Gris) N. Snow subsp. ploumensis (Däniker) N. Snow , comb. et stat. nov. ( Figs 7 ; 9 ; 10D )

Differing from other subspecies by the relatively large, elliptic, and moderately to strongly bullate leaf blades.

Austrobaileya 8: 180 (2010). — Eugenia ploumensis Däniker, Beiblatt zur Vierteljahrsschriftder Naturforschenden Gesellschaft in Zürich, Beibl. 19, 78: 298 (1933). — Austromyrtus ploumensis (Däniker) Burret, Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem 15: 504 (1941).

— Typus: New Caledonia. Grande Terre, South Prov ., Ploume , 9.II.1926, A.U. Däniker 2807 (holo-, Z [ Z-000016108 ]; iso-, Z[Z-000016109]).

DISTRIBUTION, HABITAT AND PHENOLOGY. — Across much of Grande Terre ( Fig. 7 ); in forests; c. 300- 600 m. Flowering August through March; fruiting confirmed from December through June.

SPECIMENS EXAMINED. — New Caledonia. Grande Terre, North Prov. Silva Peala, ad occidentem Pouebo, 500-600 m, 6.V.1968, Bernardi 12606 (P[P00402719]; Mount Mandjelia and slopes, 540 m, 20°24’19”S, 164°31’01”E, Craven 15027 et al. ( CANB, n.v.; P[P02091556]) ; Forêt de Tende (Haute Diahot), exploitation forestière Frouin, 500-600 m, 12.XI.1967, MacKee 17534 ( NOU [ NOU029693 ], P[P02088630]) ; Forêt de Tende (Haute Diahot), 500-600 m, 17.IX.1967, MacKee 17550 (P[P02089850]) ; Haute Diahot : Exploitation Forestière , Frouin, Forêt Tendé, 31.III.1969, MacKee 20453 ( NOU [ NOU 05323]) ; Haut Diahot , Tendé, 600 m, 30. VI.1982, MacKee 40567 (MO[ MO-6751044 ], NOU [ NOU029690 ], P[P02089872]) ; Road leading up to Mt Mandjélia from Ouégoa, c. 650 m, 11.VIII.2003, Snow 9215 et al. ( ASU, BISH, BRI, CANB, KSP [ KSP016939 ], MO, NOU [ NOU 00683], NY, P[P00459485], WELTU). — South Prov. Mt Mi (= Do Mt sentier Ouanémie [ Hopkins & Bradford 2009: appendix 2]), 20.II.1869, Balansa 1490a (P[P00402725, P06669014]) ; Entre St Louis et Ounia, 15.I.1869, Balansa 1490bis (P[P00402726, P00402753, P00402754]; Piste du pont des Japonais, 166°42’40”E, 22°15’31”S, 4.II.2007, Munzinger 4119 et al. (MO n.v., NOU n.v., P[P05321122, P05321125, P05321126], WELTU).

REPRESENTATIVE HERBARIUM SPECIMEN. — P05321125.

REMARKS

This subspecies has large, elliptic and moderately to strongly bullate leaf blades. It occurs from the north to south near the coasts, but I am unable to discern consistent differences between the northern and southern populations. Previously annotated specimens of this subspecies may bear the manu- script names Gossia “grandibullata” or Gossia clusioides subsp./ var. “grandibullata”. Unvouchered photos ( Fig. 10D ) of a possible specimen of this subspecies taken by J.-L. Ruiz near the River de Pirogues showed honeybees (Apis sp.) pollinating the flowers.

Figures

FIG. 7. — Distribution map for subspecies of Gossia clusioides (Brongn. & Gris) N. Snow.

FIG. 9. — Gossia clusioides (Brongn.& Gris) N. Snow subsp.ploumensis (Däniker) N. Snow,comb.et stat. nov., showing peeling and cracking bark of branchlets. Voucher: Snow 9215, BISH (sheet 3 of 3). Scale bars: A, C, 2 cm; B, 1 cm.

FIG. 10. — Living specimens of Gossia clusioides: A, G. c. subsp. callmanderiana N. Snow, subsp. nov. vel aff.; B, G. c. subsp. bleuensis N. Snow, subsp. nov. vel aff.; C, G. c. subsp.ploumensis (Däniker) N. Snow, comb. et stat. nov.; D, G. c. subsp. ploumensis comb. et stat.nov. vel aff., but with larger and more prominently bullate leaves than normal and possibly representing an undescribed taxon. Vouchers: A, ©Hervé Vandrot, taken at Cascade la Pandanas-Koniambo in 2010 (http://endemia.nc); B, © Christian Létocart, taken at Yaté; C, ©Daniel & Irène Létocart, taken at Napoérédjeine in 2007; D, ©Jean-Louis Ruiz, taken at Pont des Japonais in 2005 (http://endemia.nc).