Cinnamomum inconspicuum, Kosterm. ex de Kok

De Kok, Rogier P. J., 2023, The Lauraceae Juss. of Indo-China: fifteen new species, four new combinations and two neotypifications, Adansonia (3) 45 (1), pp. 1-25 : 4-5

publication ID	https://doi.org/ 10.5252/adansonia2023v45a1
DOI	https://doi.org/10.5281/zenodo.7526428
persistent identifier	https://treatment.plazi.org/id/03FC87DA-FFE3-FFFB-D0FA-FB8FFDF6FC12
treatment provided by	Felipe
scientific name	Cinnamomum inconspicuum
status	sp. nov.

Treatment

3. Cinnamomum inconspicuum View in CoL Kosterm. ex de Kok, sp. nov.

( Figs 2 View FIG ; 3 View FIG )

Cinnamomum inconspicuum Kosterm. View in CoL , unpublished; P.H. Hô, Illustrated Flora of Vietnam: 428 ( Hô 1991), nom. inval.; Nguyén Kim Đào, Lauraceae View in CoL in Checklist of Plants Species of Vietnam 2: 76 (Nguyén Kim Đào 2003 nom. inval.); Nguyén Kim Đào, Flora of Vietnam 20: 283 (Nguyén Kim Đào 2017), nom. inval.

DIAGNOSIS. — This species differs from its close relative Cinnamomum bokorense Tagane & Yahara by having thinly leathery leaves (rather than rigidly leathery in C. bokorense ) and by having perianth lobes that are very sparsely hairy on the outside (vs densely hairy in C. bokorense ).

TYPE SPECIMEN. — [ Vietnam] Quang Nam: près du village Moi de Mang Tra, [15°3’52.776”N, 108°9’32.796”E], alt. 1500 m, 26.II.1941, Poilane 31790 (holo-, P [ P 01964441]).

DISTRIBUTION. — Vietnam and Cambodia (see Fig. 2 View FIG ).

ECOLOGY. — Growing in forests on granite-derived soil at 150- 1500 m altitude. Flowering February to March.

CONSERVATION ASSESSMENT. — Endangered (EN B1ab(i,iii), B2ab(ii,iii)). This species is known only from three localities in Cambodia and Vietnam. An analysis of the Extent of Occurrence (EOO) and Area of Occupancy (AOO) gives an IUCN Conservation Assessment of Endangered.

ADDITIONAL COLLECTIONS SEEN. — Cambodia. Phnom Penh: Forêt de Phnom Penh, 4.II.1935, Béjaud s.n. ( P). — Pursat: Anlong Krauch, [12°15’15.012”N, 104°2’45.996”E], alt. 150 m, 28.XII.1968, Martin 395bis ( P [ P 02006706]).

DESCRIPTION

Tree. Twigs slender, 1.1-3.4 mm thick, rounded in crosssection, glabrous; terminal leaf bud linear, c. 2.8 mm long, apex acute, sparsely hairy. Leaves alternate to (sub)opposite, domatia absent; blade lanceolate, 7.5-10 × 1.7-3 cm, apex acute to acuminate, base cuneate, thinly leathery, triplinerved, secondary nerves one pair, tertiary nerves scalariform; upper surface glabrous, midrib and secondary nerves raised, tertiary nerves indistinct; lower surface glabrous, midrib and secondary nerves raised, tertiary nerves indistinct; petiole channelled, 5-7.5 mm long, slender, glabrous.

Inflorescence 5-6.5 cm long, a few-flowered panicle, terminal, glabrous; bracts absent; bracteoles linear, 1-1.2 mm long, apex acute, sparsely hairy. Flower with perianth tube shallow, perianth lobes 1.5-1.6 × 1-1.2 mm, apex acute, very sparsely hairy; stamens 1.5-2.7 mm long, hairy, anthers 4-celled; ovary ellipsoid, c. 1.2 mm diameter, glabrous, style c. 1.3 mm long.

Fruit unknown (see Fig. 3 View FIG ).

NOTES

No evidence that this name was ever validly published could be found and so it is validated here.