Skip to main content
This species is accepted, and its native range is Madagascar.
A specimen from Kew's Herbarium


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

Northern Madagascar.
Morphology General Habit
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
Morphology Leaves
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
Morphology Reproductive morphology Flowers Androecium Stamens
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
Morphology Reproductive morphology Flowers Calyx
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
Morphology Reproductive morphology Flowers Corolla
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
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary finely pubescent distally; style with few fine hairs towards base; stigma white, clavate, 0.6 − 1 mm long
Morphology Reproductive morphology Fruits
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.
Morphology Reproductive morphology Inflorescences
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
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.
Type: Madagascar, Antsiranana, Daraina, forêt d’Antsahabe, Ranirison PR 760 (holotype K!; isotypes CAS, Daraina, G, TEF).

Native to:


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)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8: 215.


Kew Bulletin

  • Balkwill, M.-J. & Balkwill, K. (1997). Delimitation and infra-generic classification of Barleria (Acanthaceae). Kew Bull. 52: 535 − 573.CrossRefGoogle 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
  • Benoist, R. (1967). Acanthacées. Tome I. In: H. Humbert (ed.), Flore de Madagascar et des Comores. Museum National d’HistoireNaturelle, Laboratoire de Phanérogamie, Paris.
  • 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
  • IUCN (2001). IUCN Red List Categories and Criteria. Version 3.1. IUCN Species Survival Commission, IUCN, Gland and Cambridge.
  • IUCN (2013). Guidelines for using the IUCN Red List Categories and Criteria. Version 10.1. Available at Accessed 13 December 2013.
  • 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

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Bulletin
Kew Bulletin

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.