Barleria lobelioides Dominique Champluvier 2011, sp. nov.
Creators: name: Champluvier, Dominique
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Acanthaceae
Barleria
Barleria lobelioides

description: <i>Barleria lobelioides</i> Champl., <b>sp. nov.</b> Ab omnibus speciebus <i>Barleriae</i> propter calycis lobos maximos acuminatos-cuspidatos et integros differt; propter flores in capitulis crassis terminalibus vel axillaribus dispositas foliisque numerosis subtentas proprius est; <i>B. macrostegiae</i> similis sed propter calycis lobos multo angustiores; propter bracteas, calycis lobos foliaque majores non coriaceos dense pilososque et propter distributionem valde differt. – Type: D.R.Congo, District du Haut-Katanga, Fungurume, alt. 1300 m, May 1985, <i>Malaisse &amp; Goetghebeur</i> 515, fl (holo-: BR; iso-: B, C, CAS, K, LISC, MO, P, UPS, WAG). Prickless suffrutescent more or less prostrate plant. Stems densely covered with long spreading hairs. Lamina of the leaves ovate to ovate-elliptic, cuneate to subrounded at the base, acute at the tip, 2.5–4.8(–7.5) × 1.2–2.5 cm, covererd with long thin more or less adpressed hairs; nerves somewhat depressed above, prominent below; leaves subsessile or petiole up to 5 mm long. Inflorescences capitate or in dense short (more rarely rather long) spikes, terminal or on short lateral shoots and subtended by leaves; bracts, bracteoles and calyx covered with long fine adpressed hairs and with shorter rather flexuous hairs and glandular hairs; bracts elliptic, 2.5–3.7 × 1.2–1.8 cm, acuminate; bracteoles narrowly elliptic, rather asymetric, cuspidate, 3.3–4 × 0.4–0.7 cm; calyx with posticous lobe narrowly elliptic, cuspidate, 3–3.6 × 0.8–1 cm, anticous lobe 2.9–3.5 × 0.8–1.3 cm, similar to the posticous one but bifid on 5–15 mm long, with the two teeth cuspidate; corolla white, 3.5–5 cm long, tube 2.3–3 cm long, 6–10 mm wide at the throat, slightly pubescent and glandular outside; lobes elliptic to suborbicular, upper lobes 12–16 × 6–9 mm, median lower lobe 13–22 × 10–15 mm, lateral lower lobes 12–15 × 6–14 mm; fertile stamens 2, with filament 16 mm long and black anther 3–4 mm long, included in the tube; staminodes 2–3, included, with filament 2–7 mm long and reduced anther; style 25–32 mm long, stigma capitate. Capsule (submature) ellipsoid, blackish, glabrous, 20 × 7 mm. Fig. 7. <b>Distribution</b> – Species of the Zambezian centre of endemism. Endemic from Katanga, strictly bound to metalliferous deposits. Fig. 8. <b>Other collections examined – D.R.Congo. District du Haut-Katanga</b>: Tenke, May 1957, <i>Duvigneaud</i> 3023 A, fl (BRLU); Kwatebala, May 1980, <i>Malaisse</i> 10906, fl (BR); Fungurume,1956, <i>Duvigneaud</i> 2250 B, fr (BRLU); ibid., May 1957, <i>Duvigneaud</i> 3019Ac, fl (BRLU); ibid., May 1957, <i>Duvigneaud</i> 3023A, fl (BRLU); ibid., Jun. 1957, <i>Duvigneaud</i> 3446Ac, fl (BRLU); ibid., alt. 1230 m, Jun. 1997, <i>Malaisse, Kisimba &amp; Muzinga</i> 9, fl (BR); Tilwizembe, May 1957, <i>Duvigneaud</i> 3081Ac, fl, fr (BRLU); ibid., May 1957, <i>Duvigneaud</i> 3138A, fl, fr (BRLU); Mambilima, alt. 1300 m, Jun. 1997, <i>Malaisse, Kisimba &amp; Muzinga</i> 19, fl (BR); Kwatebala, alt. 1500 m, Jun. 1997, <i>Malaisse, Kisimba &amp; Muzinga</i> 50, fl (BR); Kabwelunono, alt. 1475 m, Jun. 1997, <i>Malaisse, Kisimba &amp; Muzinga</i> 139, fl (BR); Fungurume, alt. 1170 m, Apr. 1974, <i>Malaisse</i> 7732, fl (BR); ibid., alt. 1200 m, Apr. 1980, <i>Malaisse</i> 10524, fl (BR); ibid., alt. 1200 m, Feb. 1978, <i>Malaisse &amp; Grégoire</i> 123 (BR); ibid., alt. 1170 m, Apr. 1990, <i>Tropmetex</i> 148, fl (BR); Tilwizembe, alt. 1300 m, Apr. 1990, <i>Tropmetex</i> 242, fl (BR). <b>Habitat</b> – Steppes and savannas, <i>Uapaca robynsii</i> bushy savannas; on cobalt and copper deposits only, 1170–1500 m. <i>B. lobelioides</i> has the same kind of habit and inflorescence as <i>B. macrostegia</i>, a species confined to Namibia, Zimbabwe, Botswana and South Africa. <i>B. macrostegia</i> is less robust, having coriaceous, glabrous leaves, much broader, widely elliptic coriaceous calyx lobes and a smaller corolla with an almost cylindrical tube. The leaves and calyx lobes of <i>B. lobelioides</i> are not coriaceous and are villous, the calyx lobes being narrowly elliptic, and the corolla is larger with an infundibuliform tube. After Balkwill &amp; Balkwill (1997), <i>B. macrostegia</i> belongs to sect. <i>Barleria</i>. That section is characterized, inter alia, by the strongly different shape and size of the outer and inner calyx lobes; it is not the case in <i>B. lobelioides</i>, but all the other characters match these of that section and, in our opinion, <i>B. lobelioides</i> can be considered as a peripheral member of the latter. It is remarkable to notice that almost all the specimens have been collected since 1980 only.
description: Published as part of <i>Dominique Champluvier, 2011, New and overlooked Acanthaceae taxa from D. R. Congo, Rwanda and Burundi: (1) the genus Barleria, pp. 82-95 in Plant Ecology and Evolution 144 (1)</i> on page 89, DOI: 10.5091/plecevo.2011.388, http://zenodo.org/record/1486150
description: {"references": ["Balkwill M. - J., Balkwill K. (1997) Delimitation and infrageneric classification of Barleria (Acanthaceae). Kew Bulletin 52: 535 - 573. [available at http: // www. jstor. org / pss / 4110286]"]}