1. Family: Scrophulariaceae Juss.
    1. Genus: Selago L.
      1. Selago thomsonii Rolfe

        This species is accepted, and its native range is Kenya to Tanzania.

    [FZ]

    Scrophulariaceae, D. Philcox. Flora Zambesiaca 8:2. 1990

    Habit
    Perennial woody herb or subshrub 15–50(150) cm. tall: stem erect, ascending or decumbent, branches many-leaved, short white-pubesent.
    Leaves
    Leaves alternate on inflorescence branches, fasciculate on main stems, 6–12(30) x (0.25)1–2(5) mm., linear-lanceolate, subobtuse, entire, minutely hispid to subglabrous except on margins and prominent major nerves beneath, densely glandular-punctate on both surfaces.
    Inflorescences
    Inflorescence corymbose of short, rounded heads; 4–6 mm. in diam., subglobose, terminal, slightly elongated in fruit.
    Peduncles
    Peduncles up to 10 mm. long, slender, pubescent.
    Flowers
    Flowers sessile.
    Bracts
    Bracts up to c. 2 mm. long, linear, obtuse or boat-shaped, pubescent.
    Calyx
    Calyx (1)1.5–2 mm. long, pubescent; lobes 0.5–1 mm. long, about equalling tube, subulate-linear to oblong, obtuse or acute, the 3 lower lobes narrow subequal in width, the 2 upper lobes broader subacute or subobtuse, shortly ciliate.
    Corolla
    Corolla purple to lilac-blue, rarely white; tube (1)1.5–2(2.5) mm. long, glabrous without; lobes subequalling tube, subcircular-oblong, longest (1.3)1.5–2 x 0.8–1.2 mm.
    Fruits
    Capsule c. 1–1.5 mm. long, somewhat compressed, ovoid-globose.
    [FTEA]

    Scrophulariaceae, S.A. Ghazanfar, F.N. Hepper & D. Philcox. Flora of Tropical East Africa. 2008

    Type
    Type: Tanzania, Kilimanjaro, Thomson 35 (K!, lecto., chosen by Hilliard, 1999)
    Habit
    Annual herb with the main stem arising from a simple taproot.
    Stem
    Stems reddish or pale brown, simple below but soon branching, erect or decumbent, 10–50 cm long, leafy throughout, pubescent with down-curving and spreading hairs
    Leaves
    Leaves opposite and alternate, densely fascicled, spreading, linear, 5–20 mm long, 0.5–2 mm wide, base tapering, apex acute to obtuse, margins entire or with 1–2 teeth in the apical part, ± thickened and ± revolute, hairy on surfaces and margins, glandular-punctate
    Inflorescences
    Inflorescence of congested racemes forming small round-topped corymbose panicles; bracts adnate to pedicel and about half of calyx tube, oblong to elliptic, 2–3 mm, obtuse, concave, villous on margins and back, sometime only sparsely so; pedicels up to 1 mm long
    Calyx
    Calyx 1.5–2 mm long, 5-lobed to about half the length, rarely 3-lobed, the two dorsal lobes larger than the other three, oblong to triangular, margins pale, hairy, glandular
    Corolla
    Corolla tube 1–2 mm long, limb ± 3 mm across the lateral lobes; lobes violet to purplish, rarely white, elliptic to oblong-elliptic, ± 1 mm long
    Filaments
    Filaments 1–2 mm long.
    Anthers
    Anthers shortly exserted
    Gynoecium
    Ovary ovoid, ± 0.5 mm; style and stigma ± 2 mm long with small rounded glands and acute hairs
    Fruits
    Cocci reddish brown, subrotund, ± 1.5 mm in diameter, smooth
    Figures
    Fig 53: 1–7, p 202
    Ecology
    Montane grassland, stony hillsides with scattered undergrowth, damp open places, periodically burnt secondary bush; 2000–3000 m
    Conservation
    Least concern (LC); common and widespread
    Note
    I am following Hilliard for Selago, but am not fully convinced of her treatment of the group of species which includes this taxon, as there are many sheets that show intermediary characters especially those for S. thomsonii and S. caerulea Rolfe (not recorded in Flora area). There is also a dearth of material from the southern highlands of Tanzania which adds to the lack of information for this species group. As treated here S. thomsonii is, to a large extent, geographically isolated from the others in the Flora area (all other species found in T 7), it is also the northernmost representative of the genus in eastern and southern Africa. This is the most widespread of all species of Selago in the Flora area. According to Hillaird (op.cit.) it is distinguished from the others in its annual life-cycle, but I (S.A.G.) have seen material of this species that is apparently perennial (also recorded to be such on the label), but nevertheless agrees with all other characters of S. thomsonii (e.g. Tanzania: W Usambaras, Brenan & Greenway 8308;  Lushoto, Drummond & Hemsley 2121 & Shabani 1222; Kilimanjaro, Leippert 6090; Kenya: Nasampolai, Greenway & Kanuri 15045).
    Distribution
    Range: Not found elsewhere Flora districts: K1 K2 K3 K4 K6 T2 T3 T5 T6 T7
    [FTEA]
    Use
    None recorded on our specimens

    Distribution

    Native to:

    Kenya, Tanzania

    Selago thomsonii Rolfe appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 1, 2010 Kindeketa, W.J. [2952], Tanzania K000546003

    First published in J. Linn. Soc., Bot. 21: 402 (1885)

    Accepted by

    • Ghazanfar, S.A., Hepper, F.N. & Philcox, D. (2008). Flora of Tropical East Africa, Scrophulariaceae: 1-211.
    • Fischer, E. (1999). Flore d'Afrique Centrale (Zaire-rwanda-Burundi), Scrophulariaceae: 1-217. Jardin Botanique National de Belgique.
    • Philcox, D. (1990). Flora Zambesiaca 8(2): 1-179. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Ghazanfar, S.A., Hepper, F.N. & Philcox, D. (2008). Flora of Tropical East Africa, Scrophulariaceae: 1-211.
    Flora of Tropical East Africa
    • Fischer, F.A.C. Scrophulariaceae: 18 (1999).
    • Hilliard, Selagineae: 237 (1999)
    • Mem. N.Y. Bot. Gard. 9: 30 (1954)
    • F.T.A. 5: 270 (1900)
    • J.L.S. 21: 402 (1885)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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.

    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