1. Family: Crassulaceae J.St.-Hil.
    1. Genus: Crassula L.
      1. Crassula rhodesica (Merxm.) Wickens & M.Bywater

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

    [FTEA]

    Crassulaceae, G.E. Wickens. Flora of Tropical East Africa. 1987

    Habit
    A glabrous erect annual herb.
    Stem
    Stems simple or branching mainly in the lower half, up to 22.5 cm. long, terete, ± 1.5 mm. in diameter, distinctly 4-winged when dry.
    Leaves
    Leaves sessile, linear or linear-lanceolate, 5–8.5 mm. long, ± 2 mm. wide, apex obtuse or subtruncate, bases of opposite leaves united to form a shallow non-saccate sheath 0.5 mm. high.
    Flowers
    Flowers (4–)5-merous, axillary, 2 per axil, axils in turn may develop short leafy flowering branches; inflorescence distinctly shorter than the subtending leaf; pedicels up to 2 mm. long.
    Calyx
    Calyx-lobes linear-lanceolate, up to 2 mm. long, ± 0.3 mm. wide, attenuate-subulate, shortly connate at the base, pale green, thinly membranous.
    Corolla
    Petals lanceolate, ± 1 mm. long, ± 0.4 mm. wide, long-attenuate, white or pink, thinly membranous.
    Stamens
    Stamen-filaments ± 0.5–0.7 mm. long; anthers suborbicular, up to ± 0.15 mm. long, yellow.
    Nectaries
    Nectary scales shortly cuneate, ± 0.2 mm. long, ± 0.5 mm. wide.
    Carpels
    Carpels obliquely obovoid, ± 1 mm. long, translucent, contracted into a very short style.
    Seeds
    Seeds 2 per carpel, oblong, 0.5 mm. long, yellow, shallowly longitudinally ribbed; under S.E.M. surface consists of longitudinal cells with conspicuously crenate-sinuate interlocking walls.
    Habitat
    Shaded shallow soils bordering hardpans and rocks; 1200–2100 m.
    Distribution
    K2 K3 K4 T5
    [FZ]

    Crassulaceae, R. Fernandes. Flora Zambesiaca 7:1. 1983

    Habit
    Annual, everywhere glabrous herb with slender root.
    Stem
    Stems up to 22·5 cm. long, ± 1 mm. in diam., soft, distinctly 4-winged (at least when dried), whitish to pale green, the wings hyaline, simple or branched sometimes from the base (the branches ascending or erect, shorter than the main stem), leafy nearly from the base to the apex or leafless below; internodes usually longer than the leaves, the lower and median ones up to 14 mm. long.
    Leaves
    Leaves 5-8·5 mm. long, linear or linear-lanceolate, usually with nearly the same breadth from base to apex, the cauline and rameal ones blunt or truncate at the apex which is provided with ± numerous short papillae, entire, sessile and connate at the base into a sheath up to 0·5 mm. long, not spurred below their insertion with the stem; axillary-fascicles distinctly shorter than the subtending leaf.
    Flowers
    Flowers (4)5-merous in 2-7-flowered axillary fascicles nearly along all the stem and branches or sometimes flowers solitary; pedicels up to 3·5 mm. long, very unequal in length in each fascicle, filamentose.
    Calyx
    Calyx 1-2 mm. long, ± longer than the corolla, pale green or whitish; sepals oblong-lanceolate, attenuate-subulate to the apex which is acute or nearly so, very thin, stellate.
    Corolla
    Corolla 0·6-1 mm. long, white or pale pink, thinly membranous, hyaline to brownish on drying; petals ovate-lanceolate or ovate, folded above the middle and thus attenuate and cuspidate, nearly free, stellate.
    Stamens
    Filaments ± attaining the middle of the corolla; anthers c. 0·15 mm., subcircular, yellow.
    Fruits
    Follicles ± 0·75 mm., obliquely obovoid, contracted into the very short styles, pale green, nearly translucent, 2-seeded.
    Seeds
    Seeds c. 0·5 x 0·22 mm., oblong, obtuse at base and apex, shallowly longitudinally ridged, the ridges straight, not shining.
    Scales
    Scales minute, narrowly spathulate.

    Images

    Distribution

    Native to:

    Angola, Kenya, Namibia, Tanzania, Zambia, Zimbabwe

    Crassula rhodesica (Merxm.) Wickens & M.Bywater appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Kenya 47563.000
    Hornly, R.M. [2911], Zimbabwe K000310059 holotype

    First published in Kew Bull. 34: 632 (1980)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
    • Wickens, G.E. (1987). Flora of Tropical East Africa, Crassulaceae: 1-66.
    • Launert, E. (ed.) (1983). Flora Zambesiaca 7(1): 1-394. Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa
    • R. Fernandes in Flora Zambesiaca 7: 7 (1983).
    • R. Fernandes in Consp. Fl. Angol., Fam. 70: 7 (1982)
    • Wickens & Bywater in Kew Bulletin 34: 632 (1980).

    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.
    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