1. Family: Loranthaceae Juss.
    1. Oncella Tiegh.

      1. This genus is accepted, and is native to Kenya, Tanzania and Mozambique..

    [FTEA]

    Loranthaceae, Polhill & D. Wiens. Flora of Tropical East Africa. 1999

    Habit
    Small well-branched shrubs from a single haustorial attachment; hairs stellate and dendritic; twigs slightly compressed to angular, soon terete
    Leaves
    Leaves opposite or subopposite, shortly petiolate, penninerved
    Flowers
    Flowers in racemes; bract small, unilateral
    Calyx
    Calyx short, entire to shortly toothed
    Corolla
    Corolla joined halfway, 5-lobed, radially symmetrical, orange to pink or red, with a dark glandular patch at the base of each lobe, stellate-pubescent, weakly explosive at anthesis; tube with a basal swelling; bud-tip fusiform to obovoid; lobes usually erect, often partly cohering at tips, some or all sometimes spreading to slightly reflexed from near the point of filament-insertion, occasionally coiled and tending to break off
    Stamens
    Filaments attached a little less than halfway up the corolla-lobes, slender in lower persistent part, jointed and slightly thickened above, the upper part coiling, collapsing and breaking off to various degrees; anthers basifixed, 4-thecous; if the thecae short (less than 2 mm.) then unequal, the dorsal ones shorter; connective-appendage minute to subulate or expanded and ± bilobed
    Pistil
    Style filiform; stigma ovoid to obovoid or fusiform
    Fruits
    Berry white to red (sometimes turning black), ellipsoid, with persistent calyx.
    [FZ]

    Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

    Style
    Style filiform; stigma ovoid to obovoid or fusiform
    Fruits
    Berry white to red (sometimes turning black), ellipsoid, with persistent calyx. Berry white to red (sometimes turning black), ellipsoid, with persistent calyx.
    Note
    Danser retained the genus Oncella only for the species with notably short anthers (less than 2 mm), the dorsal thecae of which are abbreviated further. He drew a comparison with Globimetula, a genus which we should not regard as at all closely related. The two species he knew (O. ambigua (Engl.) Tiegh., O. curviramea and synonyms) are further distinctive on account of the clavate bud tip (reflecting the increased thickening of the upper part of the filaments and short anthers), the more regular and delicate corolla, with the lobes remaining erect and coherent at the tips, with small dark glandular patches at the base of the lobes. However, O. schliebeniana Balle ex Polhill & Wiens from Tanzania has a fusiform bud tip, longer anthers with nearly equal thecae, spreading corolla lobes but with the same glandular patches slightly developed. The distinction between Oncella and Oedina is accordingly very slight, but it seems preferable to retain the genus for the present at least.
    Distribution
    4 species in eastern Africa, montane and coastal.
    Habit
    Small well branched shrubs from a single haustorial attachment; hairs stellate and dendritic; twigs slightly compressed to angular, soon terete. Small well branched shrubs from a single haustorial attachment; hairs stellate and dendritic; twigs slightly compressed to angular, soon terete
    Leaves
    Leaves opposite or subopposite, shortly petiolate, penninerved. Leaves opposite or subopposite, shortly petiolate, penninerved
    Flowers
    Flowers in racemes; bract small, unilateral. Flowers in racemes; bract small, unilateral
    Calyx
    Calyx short, entire to shortly toothed. Calyx short, entire to shortly toothed
    Corolla
    Corolla joined halfway, 5-lobed, radially symmetrical, orange to pink or red, with a dark glandular patch at the base of each lobe, stellate pubescent, weakly explosive at anthesis; tube with a basal swelling; bud tip fusiform to obovoid; lobes usually erect, often partly cohering at the tips, some or all sometimes spreading to slightly reflexed from near the point of filament insertion, occasionally coiled and tending to break off. Corolla joined halfway, 5-lobed, radially symmetrical, orange to pink or red, with a dark glandular patch at the base of each lobe, stellate pubescent, weakly explosive at anthesis; tube with a basal swelling; bud tip fusiform to obovoid; lobes usually erect, often partly cohering at the tips, some or all sometimes spreading to slightly reflexed from near the point of filament insertion, occasionally coiled and tending to break off
    Stamens
    Stamen filaments attached a little less than halfway up the corolla lobes, slender in lower persistent part, jointed and slightly thickened above, the upper part coiling, collapsing and breaking off to varying degrees; anthers basifixed, 4-thecous; if the thecae short (less than 2 mm) then unequal, the dorsal ones shorter; connective appendage minute to subulate or expanded and ± bilobed. Stamen filaments attached a little less than halfway up the corolla lobes, slender in lower persistent part, jointed and slightly thickened above, the upper part coiling, collapsing and breaking off to varying degrees; anthers basifixed, 4-thecous; if the thecae short (less than 2 mm) then unequal, the dorsal ones shorter; connective appendage minute to subulate or expanded and ± bilobed
    Pistil
    Style filiform; stigma ovoid to obovoid or fusiform.

    Images

    Distribution

    Native to:

    Kenya, Mozambique, Tanzania

    Oncella Tiegh. appears in other Kew resources:

    First published in Bull. Soc. Bot. France 42: 251 (1895)

    Literature

    Flora Zambesiaca
    • Polhill & Wiens, Mistletoes Afr.: 230 (1998).
    • Verh. K. Akad. Wet., sect. 2, 29, 6: 97 (1933).
    • Danser in Verh. K. Akad. Wet., sect. 2, 29, 6: 97 (1933).
    • Bull. Soc. Bot. France 42: 251 (1895).
    • in Bull. Soc. Bot. France 42: 251 (1895).
    Flora of Tropical East Africa
    • Polh. & Wiens, Mistletoes Afr.: 230 (1998)
    • in Bull. Soc. Bot. Fr. 42: 251 (1895)

    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

    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