Zingiber natmataungense
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Ordo: Zingiberales
Familia: Zingiberaceae
Genus: Zingiber
Name
Zingiber natmataungense S.S.Zhou & R.Li sp. nov. – Wikispecies link – Pensoft Profile
Diagnosis
Zingiber natmataungense is similar to Zingiber yunnanense S. Q. Tong & X. Z. Liu (Tong and Liu 1991[1]; Wu and Chen 1997[2]), but differs from it by leaf blade abaxially light green, ligule sparse pubescent, bracts glabrous; calyx white and glabrous, apex obviously 3-toothed; lateral lobes, ca. 1.5–1.7 × 0.6–0.7 cm; stamen with sparse pubescence, filament white and glabrous, 1–2 mm; anther connective appendage yellowish proximally, purplish distally; ovary white with sparse white pubescence; epigynous glands tapering, yellow. This new species also shows some morphological affinities with Z. teres S. Q. Tong & Y. M. Xia (Tong and Xia 1987[3]), but differs from it by corolla tube white, ca. 3.9–4.1 cm; central lobe white; lateral lobes white, 28–30 × 4–5 mm; labellum central lobe white, apex undulate and lobed, purplish-spotted at base, 28–29 × 16–18 mm. (Fig. 2).
Type
Myanmar. Chin State. Natma Taung (Mt. Victoria) National Park, under evergreen broad-leaved forest in tropical montane forest, 1900–2000 m alt., 9 July 2019, Shi Shun-Zhou 15828 (holotype: HITBC!, Herb. Bar. Code No. 169318; isotype: RAF!).
Description
Pseudostems 50–80 cm, base with purplish-red sheaths. Rhizome yellow, aromatic. Leaves subsessile, ligule 2-lobed, 2–3 mm, sparsely pubescent; leaf blade green, abaxially light green, lanceolate or narrowly, ca. 5–25 × 3–5 cm, glabrous, base cuneate, apex acuminate or caudate. Inflorescences radical, ellipsoid, ca. 5–6 × 2–3.5 cm, ellipsoid or narrow ellipsoid; peduncle embedded in ground, 3–16 cm; bracts glabrous, outer ones purple, elliptic, apex blunt, ca. 4–4.2 × 2–2.3 cm, inner ones purple, purplish at base, long ellipsoid or lanceolate, ca. 4.5–5.0 × 1.3–1.7 cm; bracteoles white, purplish-spotted at apex, white at base, tubular, 43–45 × 4.5–5 mm. Calyx white 20–21 × 3.2–3.5 mm, apex obviously 3-toothed, glabrous. Corolla tube white, glabrous, ca. 3.9–4.1 cm; central lobe white with apex caudate-acuminate, ca. 3.1–3.3 × 0.8–0.9 cm; lateral lobes with acuminate apex, 2.8–3.0 × 0.4–0.5 cm. Labellum white, glabrous, apex undulate and lobed, purplish plaque at base; central lobe obovate, ca. 2.8–2.9 × 1.6–1.8 cm; lateral ones oblanceolate, ca. 1.5–1.7 × 0.6–0.7 cm. Stamen with sparse pubescence, ca. 2.4–2.6 cm; filament white, glabrous,1–2 mm; anther yellowish, ca. 1–1.1 cm; connective appendage yellowish proximally, purplish distally, ca. 1.4–1.6 cm. Ovary white, sparsely white pubescent; style white, glabrous, stigma slightly thicker than style, white, ostiole front facing, ciliate. Epigynous glands 2, ca. 6–7 mm tapered, apex whorled, yellow. Fruit unknown.
Etymology
The new species is named after Natma Taung National Park, Chin State, Myanmar, where it was discovered in a vast area of monsoon forest.
Phenology
Flowering from July to August.
Distribution and habitat
Zingiber natmataungense is only known from the type locality. It is a terrestrial plant in monsoon forest dominated by Castanopsis tribuloides (Smith) A. de Candolle (Fagaceae) and Nyssa javanica (Blume) Wangerin (Nyssaceae) and narrowly distributed from 1900 m to 2000 m alt. It has been used as a traditional medicine by local Chin people, who cover wounds with freshly crushed rhizomes and also apply it as a substitution for common ginger to treat coughs by drinking water in which it has been boiled.
Critical note
The new species most resembles Zingiber yunnanense and Z. teres. Detailed morphological differences between the two species are given in Table 1.
| Characters | Zingiber natmataungense | Zingiber yunnanense | Zingiber teres |
|---|---|---|---|
| Leaf blade | abaxially light green, glabrous | abaxially purplish-red on basal leaves, sparsely hairy | glabrous except sparsely puberulent along mid-vein abaxially |
| Ligule | sparsely pubescent, ca. 2–3 mm | densely pubescent, 4–7 mm | pubescent, 2–4 mm |
| Bracts | glabrous | slightly hairy | glabrous except red pubescent at acute or acuminate apex |
| Calyx | white 20–21 × 3.2–3.5 mm, glabrous, apex obscurely 3-toothed | white with red base and apex, ca. 10 mm, sparsely hairy, apex truncate | apex obscurely 3-toothed, 14–16 mm |
| Corolla tube | white, ca. 3.9–4.1 cm | white with red apex, ca. 3.7 cm | yellow, ca. 4–5 cm |
| Central lobe | White, 31–33 × 8–9 mm | red with slightly yellowish-green base, ca. 33 × 13 mm | yellow, 26–30 × 9–10 mm |
| Lateral lobes | White, 28–30 × 4–5 mm | red with slightly yellowish-green base, ca. 33 × 13 mm | yellow, 20–22 × 5–7 mm |
| Labellum central lobe | white, apex undulate and lobed, purplish- spotted at base, 28–29 × 16–18 mm | white with purple lines, elliptic, ca. 28 × 17 mm | purple with yellow stripes, apex acuminate, 18–20 × 11–13 mm |
| Labellum Lateral lobes | ca. 1.5–1.7 × 0.6–0.7 cm | ca. 0.7 × 0.45 cm | small |
| Stamen | sparsely pubescent, | glabrous | glabrous |
| Filament | white, glabrous, 1–2 mm | no filament | no filament |
| Anther connective appendage | yellowish proximally, purplish distally, 14–16 mm | purplish, 2-cleft ca. 15 mm | yellow proximally, purple distally, ca. 10 mm |
| Ovary | sparsely white pubescent | densely white pubescent | densely white pubescent |
| Epigynous glands | yellow, ca. 6–7 mm, tapered, apex whorled | white, ca. 5 mm, linear | white, ca. 4 mm, linear |
Original Description
- Li, R; Shine, L; Li, W; Zhou, S; 2020: A new species of Zingiber (Zingiberaceae) from Natma Taung National Park, Chin State, Myanmar PhytoKeys, 138: 131-137. doi
Images
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Other References
- ↑ Tong S, Liu X (1991) A new species of Zingiber from Yunnan.Yunnan Zhi Wu Yan Jiu01: 27–29.
- ↑ Wu Z, Chen S (1997) Zingiberaceae. In: Wu ZY (Ed.) Flora of Yunnan 8.Science Press, Beijing, 540 pp.
- ↑ Tong S, Xia Y (1987) New taxa of Zingiberaceae from southern Yunnan.Zhiwu Fenlei Xuebao6: 460–471.
