1. Family: Acanthaceae Juss.
    1. Genus: Whitfieldia Hook.
      1. Whitfieldia orientalis Vollesen

        This species is accepted, and its native range is SE. Kenya to N. Mozambique.

    [FTEA]

    Acanthaceae (part 2), Kaj Vollesen. Flora of Tropical East Africa. 2008

    Type
    Type: Tanzania, Lindi District: Rondo Plateau, Bidgood et al. 1458 (K!, holo.; C!, CAS!, DSM!, K!, NHT!, iso.)
    Habit
    Erect spindly brittle-stemmed shrub to 2(–3) m tall; young stems brown or dark brown, with sparse to dense floccose stellate hairs which rub off easily, glabrescent
    Leaves
    Leaves ovate to elliptic, largest 5–21 × 2–7.5 cm, apex acute to acuminate (rarely obtuse), base attenuate (rarely cuneate to truncate), decurrent to the 0.5–4(–5.5) cm long petiole, margin subentire to distinctly crenate-dentate, glabrous or with sparse (rarely dense) stellate hairs on veins and edges
    Inflorescences
    Cymes simple, racemiform or with two additional cymes from lowermost pair of bracts, 1–7 cm long; peduncle 0.2–4 cm long; axes with indumentum as stems; lowermost pairs of bracts foliaceous, upper caducous and white; pedicels (below bracteoles) (2–)3–5 mm long; bracteoles white or greenish white, ovate to elliptic, 4–11 × 3–7 mm, subglabrous to densely glandularpubescent with curly glands to 2 mm long
    Calyx
    Calyx white, 1.7–2.7 cm long of which the basal tube 1–3 mm, sparsely to densely glandular-pubescent with glands to 2 mm long; lobes strap-shaped, acute to rounded
    Corolla
    Corolla tube and lobes in upper lip pure white, lobes in lower lip dark purple, glabrous or puberulous to pubescent with curly hairs to 1 mm long; cylindric tube 0.9–1.2 cm long and 3.5–5 mm in diameter, throat funnel-shaped or slightly gibbose, 1.5–2 cm long and 1–1.4 cm in diameter at apex; lobes erect in upper lip, reflexed in lower, triangular, 7–10 × 4–6 mm, subacute. Stamens held under upper lip, subequal; filaments 1.4–1.7 cm long, glabrous; anthers narrowly oblong, curved, 3–4 mm long, all functional, connective and sides of thecae with long curly hairs
    Fruits
    Capsule 1.7–2 cm long, 2-seeded, seed-bearing part broadly ovoid, ± 1 cm long
    Seeds
    Seed 6–8 mm long, broadly ellipsoid
    Ecology
    Evergreen and semi-deciduous lowland forest; near sea level to 800(–1000) m
    Note
    C.B.Clarke (l.c.) included the coastal East African material into W. stuhlmannii without any comment but stated that the species has stellately hairy young branches, a unique character in Whitfieldia. But Lindau – when describing Stylarthropus stuhlmannii – clearly states that the type (since destroyed) is subglabrous as is indeed all the Congo material (including the neotype) seen at BR and also the three Tanzanian collections cited below under that species. C. B. Clarke’s approach has been universally followed ever since, but there is no doubt – as already suspected by Evrard & Demillecamps in Belg. J. Bot. 125: 92 (1992) – that we are dealing with two distinct species.
    Distribution
    Range: Not known elsewhere Flora districts: K7 T3 T6 T7 T8

    Images

    Distribution

    Native to:

    Kenya, Mozambique, Tanzania

    Whitfieldia orientalis Vollesen appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Bidgood, S. [1458], Tanzania K000780517 holotype
    Bidgood, S. [1458], Tanzania K000780518 isotype

    First published in Kew Bull. 59: 123 (2004)

    Accepted by

    • Baksh-Comeau, Y., Maharaj, S.S., Adams, C.D., Harris, S.A., Filer, D.L. & Hawthorne, W.D. (2016). An annotated checklist of the vascular plants of Trinidad and Tobago with analysis of vegetation types and botanical 'hotspots' Phytotaxa 250: 1-431.
    • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

    Literature

    Kew Backbone Distributions
    • Baksh-Comeau, Y., Maharaj, S.S., Adams, C.D., Harris, S.A., Filer, D.L. & Hawthorne, W.D. (2016). An annotated checklist of the vascular plants of Trinidad and Tobago with analysis of vegetation types and botanical 'hotspots' Phytotaxa 250: 1-431.
    Flora of Tropical East Africa
    • K.B. 59: 123, fig. 1 (2004).

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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 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