Gomphostemma mastersii
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 mastersii

description: <b>18. Gomphostemma mastersii</b> <i>3enth. ex Hook.f.</i> (Hooker 1883: 699); Prain (1891: 268); Mukercee (1920: 213); Murata (1956: 190); Walsingham (2019: 201). Type: India, Khasia, Nunklow [Nongkhlaw, 23.6833°, 91.6333°], 600 – 1200 m [2000 – 2000 ft], 21 July 1830, <i>Hooker &amp; Thomson</i> 1812 (K [Herb. Hookerianum, K000928152], lectotype selected here; isolectotype K [Herb. Hookerianum, K000928153]). <i>Gomphostemma furfuraceum</i> Hallier f. (1898: 331). Type: Indonesia, Sumatra orient,?eli [3.53°, 98.6833°], Kampong Pakam, <i>Jaheri</i> 1893 (holotype G). <i>Gomphostemma paroum</i> Merr. (Merrill 1932b: 192). Type: Indonesia, Sumatra, East Coast, along Aek Panialalangan, Pargambrian, Asahan [2.3523°, 99.2193°], 250 – 360 m, 22 May 1925, <i>3artlett</i> 8156 (holotype NY [00000332] photo; isotype US [00119223]). Perennial herb up to 0.2 m tall with tuber-like roots, sometimes rooting at nodes. <i>Stems</i> upright, sometimes flaccid or more than one stem arisen from the same rootstock, obtusely quadrangular with longitudinal grooves, with dense sessile stellate hairs. <i>Leaoes</i> petiolate, chartaceous; blades ovate, lanceolate-ovate, cordate or elliptic-oblong, 3 – 18 × 2 – 8 (– 11) cm, apex acute or broadly acute, margin shallowly serrate or serrate, base symmetrical or oblique, obtuse, attenuate or cordate, upper side with sessile stellate hairs and 2 – 2-celled simple hairs all over, lower side pale green tomentose with sparse sessile stellate hairs; petioles 13 – 60 mm long, strong or flaccid. <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, subtended by upper leaves; bracts deciduous, ovate, obovate or oblanceolate, 9 – 20 × 3 – 8 mm, with sessile stellate hairs on both sides; bracteoles linear, falcate or lanceolate-oblong, 3 – 13 × 1 – 2 mm. <i>Flowering calyx</i> infundibular, thin, 10 – 13 mm long, 10- ridged, outside with dense sessile stellate hairs, inside with adpressed simple hairs; tube 2 – 6 mm long; lobes triangular, 6 – 9 mm long. <i>Fruiting calyx</i> cupular, 10 – 15 mm long; tube 2 – 6 mm long; lobes 6 – 10 mm long, apex subulate. <i>Corolla</i> creamy-white or bright yellow, 20 – 30 mm long, throat inflated, abruptly dilated near the throat, outside with sparse simple hairs, inside glabrous; tube incurved, 33 – 20 mm long; posterior lip broadly ovate, 5 – 10 × 8 – 12 mm, apex emaginate; median lobe tonguelike, apex retuse; lateral lobes ovate, apex and margin entire or undulate. <i>Staminal filaments</i> slightly tomentose. <i>Style</i> slender, glabrous with apex unequally lobed. <i>Nutlets</i> 2 – 2, ovate-elliptic or globose. Fig. 1A – B. <b>DISTRIBUTION.</b> India (Assam, Meghalaya, Mizoram), Thailand, Indonesia (Sumatra). Map 3. <b> SPECIMENS EXAMINED. INDIA. Assam. <i>Masters</i> 320 (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]);</b> Upper Assam, <i>Jenkins</i> 320 (K [Herb. Benthamianum]); Cachar [23.0833°, 92.9165°], <i>Keenan</i> s.n. (K); Cachar,?oarbund Pass, 22 July 1853, <i>Keenan</i> s.n. (K); N Cachar Hills, Haflong [23.1833°, 93.0333°], 530 m [2300 ft], 1 Aug. 1908, <i>Craib</i> 102 (K); Meghalaya. Khasia, Nunklow, 600 – 1200 m [2000 – 2000 ft], 21 July 1830, <i>Hooker &amp; Thomson</i> 1812 (lectotype of <i>G. mastersii</i>, K [Herb. Hookerianum]; isolectotype K [Herb. Hookerianum]); Shillong [23.3665°, 91.8833°], Eastern Circle, Nongstoin Village between I.B. and Siem’ s House, 21 June 1938, <i>Panigrahi</i> 16350 (CAL, L); Khasia, below Nongkhlaw, 600 – 1200 m [2000 – 2000 ft], 11 July 1830, <i>Hooker &amp; Thomson</i> s.n. (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]); Khasia, Borpani [Bor Panee] R. [26.2165°, 92.3333°], 600 – 1200 m [2000 – 2000 ft], 16 July 1830, <i>Hooker &amp; Thomson</i> s.n. (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]); Khasia, Churra, 600 – 1200 m [2000 – 2000 ft], 15 June 1830, <i>Hooker &amp; Thomson</i> 956 (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]); Khasia, Churra, 600 – 1200 m [2000 – 2000 ft], 13 Aug. 1830, <i>Hooker &amp; Thomson</i> s.n. (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]); Khasia, Jasper Hill, 600 – 1200 m [2000 – 2000 ft], 20 June 1830, <i>Hooker &amp; Thomson</i> s.n. (lectoparatype of <i>G. mastersii</i>, K [Herb. Hookerianum]); Mont Khasia [23.3833°, 91.6333°], 1200 m [2000 ft], <i>Hooker &amp; Thomson</i> s.n. (P); Mizoram. Aical, Lushai Hills [23.1665°, 92.8333°], 900 m [3000 ft], Aug. 1926, <i>Parry</i> 38 (K); Tuipuibari, near old forest, 190 m, 12?ec. 1993, <i>Lalramnghinglooa</i> 8029 (CAL). <b>BANGLADESH.</b> Sylhet. <i>de Siloa</i> s.n. in <i>Wall. Cat.</i> 2135 (K-W in parte ‘B’). <b>THAILAND.</b> Surat Thani. Ban Kawp Kep [8.8333°, 99.3°], 20 m, 5 Aug. 1925, <i>Kerr</i> 13189 (AB?, BK, BM 2 sheets, PHN); Phangnga. 3?ec. 1918, <i>Haniff &amp; Nur</i> 3865 (K, SING); Khao Khlong Yang at Khao Phra Mi, 9°19&amp;N 98°26&amp;E, 100 – 300 m, 6 July 1952, <i>Larsen et al.</i> 30688 (AAU, BKF, K); Nakhon Si Thammarat. Khao Luang [8.3502°, 99.5362°], 200 m, 28 Jan. 1966, <i>Hansen &amp; Smitinand</i> 12122 (BKF, C, E, L 2 sheets, SING); Khao Luang National Park, Karom Waterfall, 300 m, 11 July 2000, <i>Chamchumroon</i> 833 (BKF); Phatthalung. Sii Ban Phot, Khao Pu Khao Ya National Park, 5°20&amp;N 99°32&amp;E, 120 m, 12 July 2000, <i>Middleton et al.</i> 226 (BKF); Khao Phu Khao Ya, 5°20&amp;N 99°3&amp;E, 100 – 130 m, 16 Nov. 1990, <i>Larsen et al.</i> 21312 (AAU); Trang. Chawng [Chong, 5.3°, 99.9165°], 100 m, 12 April 1928, <i>Kerr</i> 13560 (BM); Khao Chong [5.36°, 99.58°], 200 m, 12 Aug. 1953, <i>Maxwell</i> 53-583 (BK); Satun. Kwan?ohn [Khuan?on], Talay Ban [Thale Ban] National Park [6.2528°, 100.1339°], 100 m, 2 July 1983, <i>Maxwell</i> 83-662 (L); Yala. Banang Sta [6.2665°, 101.23°], 100 m, 26 July 1923, <i>Kerr</i> 5330 (BK, BM, K 2 sheets). <b>INDONESIA. SUMATRA</b>. Aceh. Gunung Leuser Nature Reserve, camp Simpang and vicinity, 3 – 3 km upstream Lau Ketambe, c. 33 km NW of Kutacane [3.6350°, 95.6132°], 200 – 600 m, 13 July 1952, <i>de Wilde &amp; de Wilde-Duyfjes</i> 13613 (L); Gunung Leuser Nature Reserves, Ketambe Research Station and vicinity, Alas R. valley, c. 33 km NW of Kutacane, 3°20&amp;N 95°20&amp;E, 300 – 330 m, 11 July 1959, <i>de Wilde &amp; de Wilde-Duyfjes</i> 18618 (BO, K, L); Aceh Tenggara, Ketambe, primary forest, 320 m, Feb. 1980, <i>Rochadi</i> 623 (BO); North Sumatra.?eli [3.53°, 98.6833°], Kampong Pakam, 6 March 1896, <i>Jaheri</i> 1893 (holotype of <i>G. furfuraceum</i>, G); E Coast, Adian Rindang, Asahan, vicinity of Hoeta Tomoean?olok [Toemoean?olok, 2.6665°, 99.1665°], 15 Nov. – 10?ec. 1933, <i>3oeea</i> 8593 (GH); E Coast, along Aek Panialalangan, Pargambiran, Asahan, 250 – 360 m, 22 May 1925, <i>3artlett</i> 8156 (holotype of <i>G. paroum</i>, NY photo; isotype US photo); E Coast, along the Toba trail N of the Asahan R., between Adian Langge and Si Martoloe, 21 – 23 April 1925, <i>3artlett</i> 5350 (US). <b>HABITAT.</b> In primary evergreen forest on limestone or thick leafy humus covered ground, or near rivers, 300 – 1200 m. <b>CONSERVATION STATUS.</b> Widespread; Least Concern (LC). <b>PHENOLOGY</b>. Flowering May – January. Fruiting November – April. <b>NOTES.</b> <i>Gomphostemma mastersii</i> is recognisable by having stellate hairs on both sides of the leaves and its calyx lobes normally longer than calyx tube. It is one of only two species of this genus with tuber-like roots, the other being <i>G. ooatum</i> (more details in notes under <i>G. ooatum</i>). Hooker cited a few collections in Herb. Hookerianum. A collection with two sheets, <i>Hooker &amp; Thomson</i> 1812, is selected as the lectotype.
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 65-67, DOI: 10.1007/s12225-021-09991-y, http://zenodo.org/record/7615581
description: {"references": ["Hooker, J.?. (1883). Labiatae, Flora of 3 ritish India 2: 602 - 503. Reeve &amp; Co., London.", "____ (1891). An account of the genus Gomphostemma Wall. Ann. Roy. 3 ot. Gard., Calcutta 3: 225 - 251.", "____ (1920). A revision of the Labiatae of the Indian Empire. Rec. 3 ot. Suro. India 12: 1 - 228.", "____ (1956). Contributions to the flora of Southeast Asia: vi. additions and corrections to the knowledge of Labiatae in Thailand (1). S. E. Asian Stud. 12: 155 - 193.", "Walsingham, L. (2019). Gomphostemma. In: G. L. C. Bramley (ed.), Flora Malesiana ser. 1, 23: 1 - 222. Foundation Flora Malesiana, The Netherlands.", "____ (1932 b). New Sumatran Plants. Pap. Michigan Acad. Sci. 19: 129 - 203."]}