Croton steenkampianus Gerstner
  • J. S. African Bot.


Cite taxon page as 'WFO (2020): Croton steenkampianus Gerstner. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000932431. Accessed on: 10 Jul 2020'

Morphology

A dioecious or monoecious shrub up to 4.5 m. tall, though more commonly 1–3 m. tall.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
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    Young twigs densely scurfily fulvous to ferruginous stellate-lepidote, the scales deeply laciniate and having their central bosses often provided with 1–more bristles.

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    Older twigs greyish brown.

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    Leaves often subopposite; petioles (1–)2–4(–5) cm. long, scurfily fulvous stellate-lepidote; leaf-blade broadly ovate to elliptic-ovate, (4–)6–13 cm. long, 3–8 cm. wide, acutely acuminate, rarely subacute, cordate, rounded or subcuneate, with 2–4 sessile or subsessile orange-brown unequal or subequal discoid basal glands either above or beneath the blade, subentire, with the margin minutely glandular-toothed, firmly membranous to subchartaceous, 5–9-nerved from the base, remaining lateral nerves 8–11 pairs, midrib and nerves prominent beneath, uniformly thinly stellate-pubescent and green above, densely greenish-silvery lepidote beneath, the scales laciniate.

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    Stipules filiform-subulate, 4 mm. long, sparingly scurfily stellate-lepidote.

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    Axillary buds not perulate.

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    Fruit 3-lobed, 6 mm. long, 7 mm. diameter, septicidal, evenly adpressed stellate-pubescent.

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    Seeds broadly ovoid, 4.5 mm. long, 3.5 mm. wide, dark brown to blackish, slightly shiny, with a scarcely prominent caruncle 1.5 mm. wide.

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    Male flowers: pedicels 3–5 mm. long, slender, scurfily stellate-lepidote; sepals 5, triangular-ovate, 3 mm. long, 1.5 mm. wide, subacute, yellowish-silvery lepidote without, the scales deeply laciniate, glabrous within; petals 5, elliptic-oblong or oblong-oblanceolate, 2.5 mm. long, 1 mm. wide, pubescent within, glabrous without, ciliate on the margin; disc-glands free, rounded or ± truncate; stamens 17, filaments 3 mm. long, sparingly pubescent, anthers 1 mm. long; receptacle pilose.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
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    Female flowers: pedicels 3–5 mm. long, often extending to 7 mm. in fruit, otherwise resembling those of the ♂ flowers; sepals 5, triangular-lanceolate, subequal, 3.5 mm. long, 1.5 mm. wide, slightly accrescent in fruit, subacute, yellowish-silvery lepidote without, pubescent within, ciliate on margin; petals 0; disc shallowly crenate; ovary subglobose, 2 mm. diameter, densely fulvous adpressed stellate-pubescent; styles 3, spreading, 4 mm. long, thinly adpressed stellate-pubescent beneath, glabrous above, twice bipartite, the ultimate lobes linear-filiform.

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    Racemes terminal, 5–10 cm. long, the lower one-third to three quarters ♀, the upper quarter to two-thirds ♂, axis scurfily fulvous stellate-lepidote; bracts resembling the stipules.

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    Female flowers: pedicels 3 mm long, stouter than in the male, densely lepidote; sepals 5, 3–4 × 1.5 mm, triangular-lanceolate, subacute, lepidote without, pubescent within, greenish; petals absent; disk shallowly 5-lobed, the lobes rounded; ovary 2 mm in diameter, subglobose, densely fulvous stellate-lepidote; styles 3, 2–3 mm long, erect or spreading, twice bipartite with linear-filiform segments, sparingly stellate-pubescent abaxially, purplish.

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    Male flowers: pedicels 3 mm long; sepals 5, 2 × 1 mm, triangular-ovate, yellowish-lepidote without, glabrous within; petals 5, 2 × 0.5 mm, oblong-oblanceolate, pubescent, ciliate, pale yellowish-cream in colour; disk glands 5, rounded or truncate; stamens 17–20, filaments 2–3 mm long, sparingly pubescent, anthers 1 mm long; receptacle pilose.

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    Seeds 3.5–4 × 2.5–3.5 × 2–2.5 mm, ovoid, smooth, somewhat shiny, dark brown; caruncle c. 1 mm wide, ± flattened.

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    Fruits 5 × 6–7 mm, trilobate-subglobose, septicidal, evenly stellate-lepidote.

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    Petioles 0.5–6 cm long.

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    Stipules 3–10 mm long, subulate.

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    Racemes 2–10 cm long, terminal, mostly female with a short apical male portion, or all female; bracts minute.

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    Leaf blades 2–15 × 2–10 cm, ovate, acutely shortly acuminate at the apex, sometimes obtuse or emarginate through deformity, entire or subentire on the margin, rounded to shallowly cordate at the base with a pair of sessile discoid basal glands beneath, chartaceous, sparingly scurfily stellate-pubescent and green on the upper surface, silvery-lepidote beneath; 5–9-nerved from the base, lateral nerves in 5–8 pairs, ± impressed above, prominent beneath.

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    A shrub c. 2 m high, or tree to 7 m, dioecious or monoecious.

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    Twigs greyish-brown, lenticellate.

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    Young growth densely fulvous-lepidote.

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    Shrub, up to 3 m high. Undersurface of leaves covered with silvery, stellate hairs and scales, upper surface with sparse stellate hairs. Margin of leaves entire. Flowers creamy green.

  • Provided by: [A].e-Flora of South Africa
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    Habitat

    Woodland, forest edges, riverbanks.

  • Provided by: [A].e-Flora of South Africa
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      Bibliography

     Information From

    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • A All Rights Reserved
    Euphorbiaceae
    • B CC0 1.0 Universal (CC0 1.0).
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • D
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).
    Global Tree Assessment
    http://www.bgci.org/
    BGCI. 2018. GlobalTreeSearch online database. Botanic Gardens Conservation International. Richmond, U.K. Available at www.bgci.org. Accessed on 30/11/2018.
    • F Botanic Gardens Conservation International