Gossia clusioides subsp. bleuensis N. Snow, 2020

Snow, Neil, 2020, A revision of New Caledonian Gossia N. Snow & Guymer (Myrtaceae), Adansonia 42 (7), pp. 131-177 : 146

Gossia clusioides subsp. bleuensis N. Snow , subsp. nov. ( Figs 7 ; 8A ; 10B )

Leaf blades strongly bullate, 4.0-8.0(-11.5) cm, narrowly elliptic. The inflorescence can be up 8.5 cm long, exceeding adjacent leaves. The growth form in profile often is slender.

TYPUS. — New Caledonia. Grande Terre , South Prov., Rivière Bleue reserve, forested slopes 300 m, 30.VII.1981, McPherson 4001 (holo-, P [ P00402735 ]; iso-, BISH [fragment], MO, NOU [ NOU030915 ], PTBG, WELTU).

PARATYPI. — New Caledonia. GrandeTerre, South Prov. , Rivière Bleue, 22.II.1951, Baumann-Bodenheim 10873 (P[P00402729]) ; Bon Secours, Baumann-Bodenheim 11847 (P[P00402730]) ; Rivière Bleue, Mois de Mai , 23. VI.1951, Baumann-Bodenheim 14045 (MO[ MO-5163034 ], P[P00402727]) ; Forêt Faux Bon Secours, 9. V.1981, MacKee 39042 ( NOU [ NOU029540 ], P[P02089862, P02089863]) .

REPRESENTATIVE HERBARIUM SPECIMEN. — P02089863.

ETYMOLOGY. — From its occurrence in the vicinity of Rivière Bleue. DISTRIBUTION, HABITAT AND PHENOLOGY. — Southeast Grande Terre ( Fig. 7 ); forested slopes over ultramafics, 300- 450 m. Flowering May and June; fruiting confirmed only for July to December.

REMARKS

Further fieldwork may reveal this as being the same taxon as G. a. subsp. avanguiensis subsp. nov., which is diagnosed primarily by its longer leaves, but which occurs much farther north.

Figures

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

FIG. 8. — Typical leaf morphology for most subspecies of Gossia clusioides (Brongn. & Gris) N. Snow: A, G. c. subsp. bleuensis N. Snow., subsp. nov., with narrowly elliptic, bullate blades; B, G. c. subsp. maoyana N. Snow, subsp. nov., blades relatively narrow and bullate but longer than those of subsp. bleuensis; C, D, G. c. subsp. callmanderiana N. Snow, subsp. nov., blades elliptic and flat; E, G. c. subsp. rembaiensis N. Snow, subsp. nov.; F, G. c. subsp. clusioides; G, G. c. subsp. subsp. taomensis N. Snow, subsp. nov.; H, G. c. subsp. tiebaghiensis N. Snow, subsp. nov. Vouchers: A, McPherson 4001 (BISH); B, Dawson 16603 (WELTU)); C, Jaffré 1275 (BISH); D, Virot 1537 (BISH); E, McPherson 5083 (BISH); F, MacKee 25608 (NOU); G, Veillon 4828 (NOU); H, McPherson 3323 (NOU). Scale bar: 2 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).