Gossia clusioides subsp. callmanderiana N. Snow, 2020

Snow, Neil, 2020, A revision of New Caledonian Gossia N. Snow & Guymer (Myrtaceae), Adansonia 42 (7), pp. 131-177 : 147-148

Gossia clusioides subsp. callmanderiana N. Snow , subsp. nov. ( Figs 7 ; 8C, D ; 10A )

Leaf blades flat, thickly coriaceous, and often with a glossy adaxial surface; margin becoming recurved more or less throughout; secondary abaxial veins often prominent and projecting slightly.

TYPUS. — New Caledonia. Grande Terre , South Prov., Baie Ngo, 28.VII.1983, Suprin 2221 (holo-, P [ P00402738 ]; iso-, NOU [ NOU053238 ], P[P00402752]).

PARATYPI. — New Caledonia. Grande Terre , South Prov. , Route de Prony, 17.XII.1973, Jaffré 1197 ( NOU [ NOU029545 ], P[P00402724]) ; Région du Col de Plum , II.1974, Jaffré 1275 ( BISH [fragment], NOU [ NOU029546 ], P[P00402731]) ; Plum , 18. V.1985, MacKee 42596 ( NOU [ NOU029581 ], P[P05094060]) ; Plum, 30 m, 31.III.1986, MacKee 43056 (P[P02089854]); Au-dessus de la Baie N’go, 4.II.1982, Veillon 4813 ( NOU [ NOU029547 ], P[P05094308]) ; Rive Nord de la Baie N’go, 28.IV.1945, Virot 1537 ( BISH, P[P00402721, P00402748, P00402749], WELTU) .

REPRESENTATIVE HERBARIUM SPECIMEN. — P02089854.

ETYOMOLOGY. — In recognition of Martin Wilhem Callmander (1975-) of the Conservatoire et Jardin botaniques de la Ville de Genève (G), for his many collections and editorial commitment to expedite the publication of taxonomic novelties from New Caledonia (e.g., Snow et al. 2016a, b).

DISTRIBUTION, ECOLOGY AND PHENOLOGY. — Vicinity of Baie Ngo and Plum ( Fig. 7 ); in maquis over ultramafics, up to 50 m. Flowering March through July; fruiting confirmed only for February.

REMARKS

Athough somewhat subtle on herbarium specimens, the leaf texture is thicker and the sheen of the adaxial surface is more glossy (reflective) than members of G. a. subsp. bleuensis subsp. nov. and G. a. subsp. clusioides , which also occur in the southeast.

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).