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  1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria glandulostamina I.Darbysh.

        This species is accepted, and its native range is Madagascar.


    Darbyshire, I., Phillipson, P.B. & Rakotonasolo, F. 2014. Additions to the genus Barleria in Madagascar. Kew Bulletin 69: 9513. DOI

    Type: Madagascar, Antsiranana, Daraina, forêtd’Antsahabe, Ranirison PR 760 (holotype K!; isotypes CAS, Daraina, G, TEF).
    Perennial herb or shrublet, sarmentose with erect or decumbent leafy branches, 15 − 80 cm tall; stems slender, subterete or somewhat 4-angular, golden-brown strigose, either densely so on upper internodes or hairs restricted to two opposite furrows; basal stems softly woody with brown bark
    Leaves rather stiff, glossy and somewhat greyish-green in life, drying dark green or green-black above, paler beneath, elliptic or lower leaf pairs obovate, 3.5 − 7.7 × 1.9 − 3.6 cm, base cuneate to obtuse, margin entire, apex acute or lower leaf pairs obtuse or with a short acumen, lamina golden-brown strigose on midrib above and mainly on principal veins beneath or largely glabrous; cystoliths very numerous, conspicuous on upper surface; lateral veins 4 − 6 pairs; petiole 4 − 20 mm long, strigose or glabrous
    Inflorescences terminal, shortly spiciform or subcapitate, 1.5 – 3 cm long, comprising a series of sessile, decussately arranged cymules, each single-flowered or those at lowermost inflorescence nodes 2-flowered, the whole inflorescence drying ink-black or turning brown-scarious; bracts rapidly reducing upwards, lowermost pairs appearing like reduced leaves, those in mid-portion of the spike typically oblanceolate, 8 – 13 × 1.5 – 6.5 mm, often outcurved, strigose on main veins and margin, surface finely puberulous and with a patently glandular-pubescent margin; bracteoles linear, then 6 − 11.5 × 0.8 − 1.2 mm, or those at lowermost inflorescence nodes sometimes oblanceolate and up to 13.5 × 3.5 mm, apiculate, indumentum like that of bracts
    Calyx anterior lobe broadly elliptic, ovate or suborbicular, 8.5 − 14 × 3.8 − 10 mm, base attenuate or cuneate, margin entire, apex attenuate- to acuminate-apiculate, sometimes bifidly so, or rarely emarginate, external surface with prominent palmate-reticulate venation, very finely puberulous, hairs slightly longer and more conspicuous on main veins and margin, the latter also glandular-pubescent and with stiff long yellowish eglandular hairs; posterior lobe like anterior lobe but often more ovate-elliptic, 10 − 15 mm long, apex shortly attenuate- to acuminate-apiculate or obtuse-apiculate; lateral lobes linear-lanceolate, 4.5 − 7.5 × 0.5 mm
    Corolla white, drying blue-black with darker venation, 16.5 – 18.5 mm long, finely and inconspicuously glandular-pubescent externally mainly on limb; tube 8 – 9 mm long, infundibuliform, ± 2 mm in diam- in the basal cylindrical portion, throat widened to 3.5 – 5 mm; limb in “4+1” arrangement; abaxial lobe offset by 3 − 4.5 mm, broadly obovate, 7 – 8.2 × 6.7 – 7 mm, apex rounded or truncate; lateral lobes elliptic, 5 − 7 × 3.5 − 5 mm, apex obtuse or rounded; adaxial lobes elliptic, 5 − 6.5 × 2.5 − 3.5 mm, apex acute or obtuse
    Stamens inserted 3 – 4.3 mm from base of corolla tube; filaments 9.5 – 10.5 mm long, with numerous short-stalked capitate glands particularly in distal half; anthers grey, 1.8 − 2.4 mm long; staminodes 3, reduced to hairy protrusions, lacking discernible filaments
    Ovary finely pubescent distally; style with few fine hairs towards base; stigma white, clavate, 0.6 − 1 mm long
    Capsule flattened-fusiform, unbeaked, 8.5 – 10.5 mm long, flanks finely pubescent; immature seeds only seen, 4, clothed in silky hygroscopic hairs drying purple-black.
    Morphologically similar toBarleria humilis Benoist from western Madagascar, from which it differs in having densely glandular (not glabrous) staminal filaments, a pubescent (not glabrous) ovary and capsule, longer bracteoles (6 − 11.5 mm vs 2 − 3.5 mm long) and a more conspicuous glandular pubescence along the calyx margin.
    Northern Madagascar.



    Native to:


    Accepted Infraspecifics

    Other Data

    Barleria glandulostamina I.Darbysh. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Ranirison, P. [760], Madagascar K001089042 isotype
    Ranirison, P. [760], Madagascar K001089043 holotype


    First published in Kew Bull. 69(2)-9513: 3 (2014)


    Kew Bulletin

    • IUCN (2013). Guidelines for using the IUCN Red List Categories and Criteria. Version 10.1. Available at Accessed 13 December 2013.
    • Darbyshire, I. (2009). A reassessment of the status of Barleria sect. Cavirostrata (Acanthaceae) in tropical Africa, with a new species, B. richardsiae, described from the Tanzania-Zambia border region. Kew Bull. 63: 601 – 611.CrossRefGoogle Scholar
    • McDade, L. A., Daniel, T. F. & Kiel, C. A. (2008). Toward a comprehensive understanding of phylogentic relationships among lineages of Acanthaceaes.l. (Lamiales). Amer. J. Bot. 95: 1136 – 1152.CrossRefGoogle Scholar
    • IUCN (2001). IUCN Red List Categories and Criteria. Version 3.1. IUCN Species Survival Commission, IUCN, Gland and Cambridge.Google Scholar
    • Balkwill, M.-J. & Balkwill, K. (1998). A preliminary analysis of distribution patterns in a large, pantropical genus, Barleria L. (Acanthaceae). J. Biogeogr. 25: 95 – 110.CrossRefGoogle Scholar
    • Balkwill, M.-J. & Balkwill, K. (1997). Delimitation and infra-generic classification of Barleria (Acanthaceae). Kew Bull. 52: 535 − 573.CrossRefGoogle Scholar
    • Benoist, R. (1967). Acanthacées. Tome I. In: H. Humbert (ed.), Flore de Madagascar et des Comores. Museum National d’HistoireNaturelle, Laboratoire de Phanérogamie, Paris.Google Scholar


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