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

description: <i>Barleria velutina</i> Champl., <b>sp. nov.</b> <i>Barleriae grandicalicis</i> Lindau similis sed planta inermis foliis ellipticis vel ovatis nec obovatis, floribus in capitulis vel brevibus spicis terminalibus condensatis, calycis lobis sericeis-lanatis, papyraceis in fructibus, corollaque sine labio supero bene distinguitur; <i>B. sunzuanae</i> Brummitt &amp; Seyani et <i>B. nyasensis</i> C.B.Cl. valde affinis sed planta inermis, corollaque sine labio supero, sepalorum dentibus sursum incurvatis inermis nec deltatis rectis spinulosisque bene distinguitur. – Type: D.R.Congo, District du Haut-Katanga, Shinkolobwe, alt. 1300 m, May 1985, <i>Malaisse &amp; Goetghebeur</i> 885, fl (holo-: BR; iso-: B, C, CAS, K, LISC, MO, P, UPS, WAG). Suffrutescent plant without spines. Stem pubescent-hirsute. Lamina of the leaves ovate or elliptic, sometimes narrowly elliptic, more or less coriaceous, 1.7–4.5 × 0.9–2.8 cm, acute at the tip, cuneate to subcordate at the base, with prominent nerves below, villous above, silky-wooly below; leaves subsessile or petiole up to 5 mm long. Inflorescences in heads or short spikes 2–10 cm long, terminal or sometimes also on short lateral shoots; bracteoles linear-elliptic, acuminate, 10–15 mm long, up to 2 mm wide. Flowers: anticous and posticous calyx lobes ovate-elliptic to ovate, toothed, about (15–)20–30 × (10–)15–20 mm, accrescent, papyraceous and 25–35 × 15–25 mm in fruit, silky-wooly outside, more sparsely hairy inside, lateral lobes 10–13 × 2 mm; corolla (2.5–)3–4 cm long, without upper lobes or these strongly reduced, not more than 1.5–2 × 1.5–2 mm, white or pale pink to deep pink or mauve or pale blue to blue-violet; tube 3–5 mm wide at the throat; lateral lower lobes 23–25 × 7–19 mm, median lower lobe 25–27 × 8–17 mm, all provided outside with numerous long thin glandular multicellular hairs; filament of stamens 15–20 mm long, glabrous; anthers 4–5 mm long, black-violet; style 18–25 mm long, provided with scattered short glandular hairs; stigma capitate. Capsule ellipsoid, blackish, glabrous, 17 × 5 mm, 2-seeded. Figs 1 &amp; 3A. <b>Distribution</b>. Species of the Zambezian centre of endemism. <i>Barleria sunzuana</i>, <i>B. nyasensis</i> and the novelty can be considered as vicariant (fig. 2). <b>Other collections examined – D.R.Congo. District du Haut-Katanga</b>: Chute Mulamba, Biano, Oct. 1984, <i>Bodenghien</i> 280, fr (BR); Kaponda, Apr. 1957, <i>Detilleux</i> 908, fl (BR);15 km W de Shinkolobwe, s.d. <i>Duvigneaud</i> 2608, fl (BRLU); Kasompi W, Apr. 1957, <i>Duvigneaud</i> 2146 A, fl (BRLU); colline de Menda, Apr. 1957, <i>Duvigneaud</i> 2933B (BRLU); Menda, Apr. 1957, <i>Duvigneaud</i> 2934 B, fl (BRLU); région de Kasompi, Apr. 1957, <i>Duvigneaud</i> 2941 B, fl (BRLU); Menda, May 1957, <i>Duvigneaud</i> 3315 Ac1 (BRLU); ibid., <i>Duvigneaud</i> 3317 (BRLU); Kolwezi, May 1957, <i>Duvigneaud</i> 3219, fl (BRLU); ibid., <i>Duvigneaud</i> 3220 B, fl (BRLU); Kanoni, Jun. 1957, <i>Duvigneaud</i> 3379 Ac4, fl (BRLU); Kolwezi, Jun. 1957, <i>Duvigneaud</i> 3509 B (BRLU); ibid., <i>Duvigneaud</i> 3510 Ba (BRLU); ibid., 1959/1960, <i>Duvigneaud</i> 5458 (BRLU); Kasompi E, s.d., <i>Duvigneaud</i> 3218 B (BRLU); Kanoni, fl., Jun. 1957, <i>Duvigneaud</i> 3379 Ac4 (BRLU); Kasompi, 1956, <i>Duvigneaud &amp; Timperman</i> 2052 B, 2056, 2061 B, 2085 B, 2123, 2136, 2146 (BRLU); Mukumbi, Jul. 1956, <i>Duvigneaud &amp; Timperman</i> 2033 B1 (BRLU); Menda, Jul. 1956, <i>Duvigneaud &amp; Timperman</i> 2093, fr (BRLU); Ruwe, 1957, <i>Le Docte</i> 6, fl (BRLU); Shinkolobwe, Jun. 1981, <i>Malaisse</i> 11800, fl (B, BR, CAS, K, MO); Tshilongo, Apr. 1988, <i>Pauwels</i> 7056, fl (BR); Shaba, alt. 1225 m, Sep. 1986, <i>Schaijes</i> 3118, fl (BR); Lubudi, alt. 1500 m, May 1952, <i>Schmitz</i> 3968, fl (BR); km 40 Katofio–Kasenga, Jul. 1950, <i>Schmitz</i> 2902, fl. (BR); Mankebwe, Apr.1962, <i>Schmitz</i> 7698, fl (BR); Kipopo, Nov. 1957, <i>Schmitz</i> 5953, fl (BR, K). <b>Zambia</b>: Kabompo, Jun. 1974, <i>Chisumpa</i> 168, fl (K); Mwinilunga, Kalene Hill, May 2000, <i>Congdon</i> 585, fl (K); 17 miles S of Mwinilunga on Kabompo road, Jun. 1963, <i>Edwards</i> 675, fl (K); ibid., <i>Loveridge</i> 820, fl (K); ibid., <i>Loveridge</i> 832, fl (K); Mwinilunga, Isombo River, May 1969, <i>Mutimushi</i> 3222, fl (K); Solwezi, Luamisambi River, May 1969, <i>Mutimushi</i> 3298, fl (K); Matonchi farm, Mwinilunga distr., 1936, <i>Patterson</i> 7 (K). <b>Habitat</b> – <i>Brachystegia spiciformis</i>, or <i>B. floribunda</i>, or <i>Brachystegia</i> and <i>Marquesia</i> woodlands, grasslands; steppes with <i>Cryptosepalum</i>, <i>Loudetia simplex</i>; ‘Isenga’ woodlands (Zambia); steppes and dambos on cobalt, copper, nickel and uranium deposits, alt. 1200–1300 m. <b> Key to <i>B. velutina</i> and its vicariant species</b> 1. Upper lobes of corolla lacking or extremely reduced and not more than 2 × 2 mm; bracteoles soft, not spiny; teeth of the calyx lobes soft, curved upwards, less than 1 mm wide at the base or, if wider, then doubly toothed...................................................................................................... <i>Barleria velutina</i> 1. Upper lobes of corolla well developed, 10–15 × 5–10 mm; bracteoles with a hard tip, spiny or moderately so; teeth of calyx lobes spiny or moderately so, straight, triangular, 1 mm wide or more at the base..............................................................................................................................................2 2. Posticous calyx lobes 2.5–3.5 cm long with 3–4 mm long teeth; leaves up to 4.5 × 1.7 cm...................................................…............................................................................................... <i>Barleria sunzuana</i> 2. Posticous calyx lobes 1.5–2.5 cm long with teeth not exceeding 1.5 mm long; leaves up to 5 × 1.5 cm, often much smaller.............................................................................................. <i>Barleria nyasensis</i>
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 83, DOI: 10.5091/plecevo.2011.388, http://zenodo.org/record/1486150