Gomphostemma repentum 3 ongch.
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 repentum

description: <b> 30. Gomphostemma repentum <i>3ongch.</i></b> <b>sp. nop.</b> Type: Upper Burma, Karenni, Ywathit, Salween Valley, 600 m [2000 ft], 11 Jan. 1913, <i>Micholitz</i> s.n. (holotype K [K001081923]). http://www.ipni.org/urn:lsid:ipni.org:names:55221338-1 Climbing herb. <i>Stems</i> slender, scrambling, obtusely quadrangular, with longitudinal grooves, with dense stellate hairs; internodes curving appearing wavy, always twisting. <i>Leaoes</i> petiolate, chartaceous; blades ovate, 10 – 13 × 5 – 9 cm, apex acute, margin obtusely serrate, base attenuate or round, upper side with coarse 1 – 3-celled simple hairs, bifurcate hairs and stellate hairs confined on midrib; petioles 20 – 60 mm long, with dense stellate hairs. <i>Inflorescence</i> axillary, upright, 30 – 50 mm long, with opposite cymes elongate, raceme-like, unbranched then congested with axis not visible between cymes, inserted at the upper nodes at which leaves are usually present; verticils few-flowered; bracts broadly ovate, 10 – 13 × 10 – 13 mm, apex acute, margin serrate, base obtuse, upper side with a mixture of hairs, lower side with dense stellate hairs; bracteoles linear, 3 – 5 mm long. <i>Flowering calyx</i> infundibular, 10 – 12 mm long, 10-ridged, outside with dense stellate hairs, inside with adpressed simple hairs; tube 5 – 8 mm long; lobes triangular, 3 – 2 mm long, 1.3 – 2.3 mm wide at base. <i>Fruiting calyx</i> not seen. <i>Corolla</i> yellow, 20 – 23 mm long, throat inflated, abruptly dilated towards the throat, outside glabrous, inside with an annulus of simple hairs; tube incurved, 13 – 13 mm long, much exserted from the calyx; posterior lobe hood-like, obovate, 5 – 8 × 2 – 3 mm; anterior lobes spreading; median lobe with slightly bilobed apex; lateral lobes undulate. <i>Staminal filaments</i> fleshy, glabrescent. <i>Disk</i> lobed, tumescent behind. <i>Style</i> slender with equally lobed, cordate-like apex. <i>Nutlets</i> not seen. Fig. 3. <b>RECOGNITION</b>. <i>Gomphostemma repentum</i> is similar to <i>G. dolichobotrys</i> and <i>G. microdon</i> by having an unbranched, elongated, raceme-like inflorescence, but it is a climbing herb with curving stems. Additionally, <i>G. dolichobotrys</i> differs by its bracts that are smaller than the calyx, whereas the bracts exceed the calyx in <i>G</i>. <i>repentum</i>; and the inflorescence of <i>G. microdon</i> has lax opposite cymes with the axis visible between flowers whereas the inflorescence of <i>G. repentum</i> has congested opposite cymes with the axis not visible between flowers. <i>Gomphostemma repentum</i> is found in Northern Burma which neighbours the areas where <i>G. microdon</i> occurs in China and Laos: <i>G. dolichobotrys</i> is found in Sumatra, Indonesia. <b>DISTRIBUTION.</b> Burma. Map 5. <b> SPECIMENS EXAMINED. MYANMAR. Kayah. Upper Burma, Karenni [Kayah], Ywathit, Salween Valley, 600 m [2000 ft], 11 Jan. 1913, <i>Micholitz</i> s.n. (holotype K)</b> . <b>HABITAT.</b> On mountain, 600 m. <b>CONSERVATION STATUS.</b> <i>Gomphostemma repentum</i> is known only from the type specimen. The Ywathit?am is a megahydropower-procect with 2,300 MW capacity on the Salween River which will affect the valley in which this species grows (Salween Watch Coalition, 2016). Furthermore, extensive logging concessions have been granted around the procect site. Therefore, the Critically Endangered (CR) category is applied: CR B1ab(i,ii,iii) and B1ab(i,ii,iii). <b>PHENOLOGY</b>. Flowering January. <b>ETYMOLOGY.</b> The epithet <i>repentum</i> [<i>repens</i>, creeping] refers to its habit.
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 page 77, DOI: 10.1007/s12225-021-09991-y, http://zenodo.org/record/7615581
description: {"references": ["Salween Watch Coalition (2016). Current status of dam procects on the Salween River. Salaeeen Watch Coalition March: 1 - 12."]}