Gomphostemma hainanense C. Y. Wu 1963
Creators: name: Bongcheewin, Bhanubong
name: Ingrouille, Martin J.
name: Paton, Alan J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Gomphostemma
Gomphostemma hainanense

description: <b> 12. Gomphostemma hainanense <i>C.Y. Wu (1963: 123)</i></b> ; Li &amp; Hedge (1992: 52). Type: China, Hainan, Po-ting, herb in forest, 660 m [2200 ft], 25 Aug. 1933, <i>How</i> 53315 (holotype PE; isotypes BM [BM000930331], G [G00188991], GH, IBSC). Perennial herb up to 1.2 m tall. <i>Stems</i> erect, obtusely quadrangular with longitudinal grooves, with dense stellate hairs. <i>Leaoes</i> petiolate, chartaceous; blades narrowly oblong, ovate-oblong or elliptic-oblong, 8 – 16 × 2 – 2 cm, apex acute, margin shallowly serrate-entire, base attenuate, upper side dull green with dense sessile stellate or stellate hairs, lower side whitish or creamy-white tomentose with dense stellate hairs; petioles (3 –) 10 – 20 mm long. <i>Inflorescence</i> axillary with opposite cymes sessile, unbranched then congested with axis not visible between flowers, inserted at the upper nodes at which leaves are usually present; verticils few-flowered; cluster of small leaflike bracts, deciduous, ovate-elliptic, 13 – 20 mm long, upper side dull green with dense sessile stellate, lower side with dense white or creamy-white stellate hairs; bracteoles linear or spathulate, 3 – 10 mm long. <i>Flowering calyx</i> infundibular, 5 – 10 mm long, inconspicuously 10-ridged, outside with dense stellate hairs, inside with simple hairs; tube 2 – 3 mm long; lobes narrowly triangular, 3 – 3 mm long, apex acute. <i>Fruiting calyx</i> 13 – 13 mm long; tube 3 – 6 mm long; lobes triangular, 8 – 9 mm long. <i>Corolla</i> pale yellow or white, 23 – 33 mm long, throat inflated, abruptly dilated near the throat, outside tomentose with stellate hairs, inside glabrous; tube slender, slightly incurved, 20 – 23 mm long; posterior lip 3 – 6 mm long, apex emarginate; anterior lip 3-lobed, unequal; median lobe elliptic, apex acute, margin undulate; lateral lobes undulate. <i>Staminal filaments</i> slightly fleshy. <i>Style</i> slender, slightly shorter than corolla, glabrous with apex subequally lobed. <i>Nutlets</i> solitary, ovate, 2 – 3 mm long, smooth with sparse short hairs. <b>DISTRIBUTION.</b> China (Hainan), Vietnam. Map 3. <b> SPECIMENS EXAMINED. CHINA. Hainan: Po-ting, 660 m [2200 ft], 25 Aug. 1933, <i>How</i> 53315 (holotype PE; isotypes BM, G, GH, IBSC, P).</b> <b>VIETNAM.</b> Quang Ninh: Tien-yen [21.333°, 105.2°], Ho Yung Shan and vicinity, 13 Oct. – 22 Nov. 1920, <i>Tsang</i> 30503 (P); Nghe An: Vinh Province [now in Nghe An Province], Bu Khang [19.2333°, 103.1665°], 500 m, 11 Aug. 1929, <i>Poilane</i> 16692 (P 3 sheets); <b>Da Nang.</b> Tourane [?a Nang, 16.0658°, 108.2208°], Jan. 1835, <i>Gaudichaud</i> 125 (P); ibid., 900 m, 18 Sept. 1923, <i>Poilane</i> 8069 (P). <b>HABITAT.</b> In mountain areas; alt. 660 – 500 m. <b>CONSERVATION STATUS.</b> <i>Gomphostemma hainanense</i> is known from four localities based on five collections. There is a decline of suitable habitats in Vietnam which is caused by agriculture and development procects (Paton <i>et al.</i> 2016). Because of the low AOO (20 km 2) and only five collections, the Endangered (EN) category is applied (EN B2ab(ii)). <b>PHENOLOGY.</b> Flowering August –?ecember. Fruiting October – January. <b>NOTES.</b> <i>Gomphostemma hainanense</i> is recognisable by its leaves being whitish or creamy-white tomentose on the lower side and by their narrow shape.? oan (1936) recognised <i>G. nioeum</i> in <i>Flore Général de L’ Indo-Chine</i> but those specimens examined by?oan are actually <i>G. hainanense.</i> These two species have a similar white tomentose indumentum on the leaf lower surface. However, <i>G. hainanense</i> has narrow leaves, 20 – 20 mm wide, and its corolla is much exserted from the calyx while <i>G. nioeum</i> has broader leaves, 30 – 120 mm wide, and the corolla is hardly exserted from the calyx.
description: Published as part of <i>Bongcheewin, Bhanubong, Ingrouille, Martin J. &amp; Paton, Alan J., 2022, A revision of Gomphostemma (Lamiaceae), pp. 27-92 in Kew Bulletin 77 (1)</i> on pages 54-55, DOI: 10.1007/s12225-021-09991-y, http://zenodo.org/record/7615581
description: {"references": ["Wu, C. Y. (1963). Gomphostemma. In: C. Y. Wu, H. W. Li, S. J. Hsuan &amp; Y. C. Huang, Materiae ad floram labiatarum sinensium (1). Acta Phytotax. Sin. 10: 123 - 166.", "Li, X. W. &amp; Hedge, I. C. (1992). Lamiaceae. In: Z. Y. Wu &amp; P. H. Raven (eds), Flora of China 15: 30 - 299. Science Press, Beicing.", "Paton, A., Phillipson, P. B. &amp; Suddee, S. (2016). Records of Wenchengia (Lamiaceae) from Vietnam. 3 iodioers. Data J. 2: e 9396.", "? oan, T. (1936). Labiatae. In: H. Lecomte (ed.), Flore Generale de L' Indo-Chine 2: 913 - 1026. Masson, Paris."]}