Crassula arborescens Willd.
  • Sp. Pl., ed. 4 , 1: 1554 (1798) 


Cite taxon page as 'WFO (2024): Crassula arborescens Willd. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000624803. Accessed on: 25 Feb 2024'

Diagnostic Description

Only one present and endemic to EC: C. arborescens (Mill.) Willd. subsp. undulatifolia Toelken.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Morphology

    Perennial shrub, succulent, 1-2 m high, much branched, old leaves deciduous. Leaves elliptic to elliptic-oblanceolate, 20-40 x 8-15 mm, undulate, apex rounded, abruptly tapering into petiole, slightly convex on both surfaces with grey bloom, entire with purplish horny margins; petioles absent or short. Inflorescence a round-topped thyrse, several dichasia; peduncles 30-70 mm long. Calyx fleshy, grey-green tinged red, ridge towards apex. Corolla star-shaped, fused at base, white or cream-coloured tinged red towards apex; lobes 7-10 mm long, sharply pointed, slightly hooded and slightly ridged, spreading at right angles. Flowering time Dec., Jan.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Robust shrub, with stout, erect, fleshy branches, 0.5-1.5 m tall. Leaves sessile or shortly petiolate, broadly obovate to orbicular, dorsiventrally flattened, 20-40 x 20-30 mm, covered with a grey, waxy layer, margin horny. Flowers in a dense, rounded, terminal cluster on a peduncle 30-70 mm long, star-shaped, petals 7-10 mm long, white, tinged red.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Shrub sometimes to 2 m. Leaves opposite, mostly sessile, obovate to orbicular, sometimes with horny, purplish margin. Flowers in rounded, terminal clusters, stellate, cream-coloured tinged red, petals 7-10 mm long.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

    Perennial shrubs 1-1.5(-2) m high, with stems often up to 0.2 m in diameter at base, much branched, with old leaves deciduous. Leaves sessile or with petioles up to 5 mm long; lamina obovate to orbicular, rarely lanceolate, 20-40(-50) x (8-)20-30(-40) mm, with rounded apex, more or less abruptly tapering into petiole, dorsiventrally flattened and slightly convex on both surfaces, covered with a grey bloom and with horny often purplish margin. Inflorescence a round-topped thyrse with one to several dichasia; peduncle 30-70(-100) mm long. Calyx: lobes triangular, 1-1.5 mm long, pointed and with ridges towards apices, fleshy, grey-green often tinged red. Corolla star-shaped, fused at base for 0.5-0.7 mm, white or cream tinged red towards apices; lobes elliptic-lanceolate, 7-10 mm long, sharply pointed and slightly hooded, somewhat ridged, spreading at about right angles. Stamens with purple anthers. Squamae transversely oblong, 0.3-0.4 x 1-1.4 mm, usually truncate, scarcely constricted downwards, fleshy, pale yellow.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 9
    • ]. 

    Habitat

    Lower rocky slopes in sheltered ravines. Albany Thicket.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Stony slopes, often N-facing.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Rocky sandstone slopes.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

    Distribution

    Rooiberg, S of Nuwerus to Matjiesfontein to E Cape.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    S Namaqualand, Montagu to E Cape.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

      Bibliography

     Information From

    Crassulaceae
    https://powo.science.kew.org/
    World Flora Online Data. 2023.
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    World Flora Online Data. 2023.
    • B All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2023.
    • C CC0 1.0 Universal (CC0 1.0).