1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria compacta Malombe & I.Darbysh.

        This species is accepted, and its native range is NE. Somalia.

    [KBu]

    Malombe, I. & Darbyshire, I. 2010. Barleria compacta: a new species in Barleria sect. Prionitis (Acanthaceae) from Somalia. Kew Bulletin 65: 443. DOI: https://doi.org/10.1007/s12225-010-9226-z

    Habit
    Compact, much-branched subshrub, 10 – 30 cm high
    Stem
    Stems minutely puberulent on two opposite sides of upper internodes, glabrescent, uppermost nodes often shortly strigose; mature woody stems pale grey
    Spines
    Rayed axillary spines sparse to numerous, white, stalk (0.8 –) 1.5 – 5 mm long, rays (3 –) 4, straight, longest ray 4.5 – 13 mm long; paired white spinose bracteoles of old or aborted inflorescences persisting, numerous
    Leaves
    Leaves subsessile; blade linear, linear-lanceolate or narrowly oblong, 1.7 – 4.8 cm long, 0.25 – 0.5 (– 1.2) cm wide, base cuneate, apex acute-cuspidate, lower surface strigose at least on margin and midrib, sometimes also scattered above, hairs simple and/or medifixed, the two branches then unequal in length, or surfaces largely glabrous; midrib pale and prominent beneath, lateral veins rather inconspicuous
    Inflorescences
    Inflorescences axillary, mainly in the uppermost portions of the branches, flowers solitary; subsessile or peduncle 1.5 – 8 mm long; bracts foliaceous; bracteoles pale grey-green or whitish with age, linear-spinose, 7 – 20.5 mm long, 0.9 – 1.5 mm wide at base, glabrous or midrib strigose; flowers pedicellate for up to 1.5 – 3 mm
    Calyx
    Calyx colour as bracteoles; anticous lobe narrowly lanceolate, 7 – 14 mm long, 2.5 – 3 mm wide towards base, apex long-acuminate, spinose or rarely bifidly so, outer surface glabrous or with occasional strigose hairs on acumen and/or few subsessile glandular hairs, inner surface and sometimes margin with minute appressed hairs, venation obscured except for somewhat prominent midrib on acumen; posticous lobe as anticous lobe but marginally longer; lateral lobes linear-lanceolate, 6 – 9 mm long, 1 – 1.2 mm wide at base, usually sparsely strigose and with minute subsessile glands and/or with minute glandular hairs at base or margin
    Corolla
    Corolla 16.5 – 26.5 mm long, cream-yellow to bright yellow (-orange), glabrous or with few hairs on upper tube outside; tube cylindrical, 7.5 – 13.5 mm long, 2 – 3.5 mm wide at base; limb subregular, lobes spreading, subequal in size, 6.5 – 13 mm long, 3 – 8.5 mm wide, adaxial pair of lobes sometimes marginally narrower
    Stamens
    Stamens attached 3.5 – 7.5 mm from base of corolla tube; filaments 9 – 14 mm long, shortly pubescent in the lower half; anthers 1.7 – 2.5 mm long; lateral staminodes (0.5 –) 1 – 2 mm long, shortly pubescent, antherodes 0.6 – 1 mm long or rarely undeveloped
    Disc
    Disk cupular, margin sinuate, glabrous or sometimes with few hairs at base
    Ovary
    Ovary 2.3 – 2.8 mm long, glabrous; style filiform, 14 – 17.5 mm long, glabrous; stigma linear, 0.5 – 0.8 mm long
    Fruits
    Capsule pale brown, 7 – 13 mm long including 3 – 5 mm long sterile beak, 3.5 – 4.5 mm wide in fertile portion, glabrous
    Seeds
    Seeds ± 4.8 – 6 mm long, 4 – 4.3 mm wide, clothed in appressed, buff-coloured hygroscopic hairs
    Distribution
    NE Somalia (Flora of Somalia region: N 3)
    Ecology
    Barleria compacta is found in open to rather dense Acacia-Commiphora dry scrubby bushland or in Sporobolus-grassland with scattered Acacia, usually on rocky limestone slopes or edges of seasonal alluvial plains; 110 – 760 m. It appears tolerant of some disturbance including heavy grazing around seasonal water pools on the alluvial plains.
    Conservation
    This species is restricted to a small area of arid north-east Somalia and is currently known from 15 localities. The most likely threat to its dry, rocky habitat is over-grazing by domestic herds. However, this species appears quite tolerant of degraded habitats and may well be protected by its spine systems and compact, woody growth which restrict its palatability. Furthermore, its range has been under-botanised and it may prove to be locally common as its favoured habitat and geology is widespread in NE Somalia. It is therefore assessed as Least Concern (LC) using IUCN (2001) criteria, but more data on distribution and abundance are nevertheless desirable.
    Note
    Gillett & Watson 23369 and Merla et al. s.n. have broader leaves (5 – 12 mm wide) and smaller spines than the other material seen but such variation is not unsual in sect. Prionitis.

    Images

    Distribution

    Native to:

    Somalia

    Barleria compacta Malombe & I.Darbysh. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Popov, G. [1161], Somalia K000772642 isotype

    First published in Kew Bull. 65: 446 (2010 publ. 2011)

    Literature

    Kew Bulletin
    • EnsermuKelbessa (2006). Acanthaceae. In: I. Hedberg, EnsermuKelbessa, S. Edwards, SebsebeDemissew & E. Persson (eds), Flora of Ethiopia & Eritrea 5: Gentianaceae to Cyclocheilaceae, pp. 345 – 495. National Herbarium, Addis Ababa, Ethiopia & Swedish Science Press, Uppsala, Sweden.Google Scholar
    • Hedrén, M. (2006a). Barleria. In: M. Thulin (ed.), Flora of Somalia Vol. 3, pp. 427 – 442. Royal Botanic Gardens, Kew.Google Scholar
    • ____ (2006b). New species and combinations in Acanthaceae from Somalia. Willdenowia 36: 751 – 759.Google Scholar
    • IUCN (2001). IUCN Red List Categories and Criteria. Version 3.1. IUCN Species Survival Commission, IUCN, Gland, Switzerland and Cambridge, U.K.Google Scholar
    • ____ & ____ (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

    Sources

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Bulletin
    Kew Bulletin
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0