Apium leptophyllum (Pers.) F.Muell. ex Benth.
  • Fl. Austral.


Cite taxon page as 'WFO (2020): Apium leptophyllum (Pers.) F.Muell. ex Benth. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000540661. Accessed on: 25 Oct 2020'

General Information

Annual herb 0.5-6 dm. tall, alternately branched above; leaves oblong-ovate, the blade 3.5-10 cm. long, 3.5-8 cm. broad, 3-4-pinnately decompound, the ultimate divisions filiform, 1.5-7 mm. long, the petiole 2.5-11 cm. long; umbels compound or some simple, pedunculate or sessile, the peduncles to 2 cm- long; involucre and involucel lacking; rays 3-5, 1-2.2 cm. long, the pedicels 2-8 mm. long; carpophore shortly 2-cleft; fruit ovoid, 1.2-3 mm. long, 1.5-2 mm. broad.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 7
    • ]. 

    Morphology

    Fig. 13.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Petals very small, ± 0.3–0.5 mm., white, glabrous.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Fruit almost round, laterally compressed, 1.25–1.75 mm., with strongly protuberant, broad, pale primary ribs, sometimes purplish tinged, the valleculae very narrow at maturity, central fruit frequently sessile; stylopodia very small, styles extremely short or absent.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Umbels 2–4-rayed, sessile (sometimes apparently pedunculate through branch reduction), rays 9–15 mm., involucre absent; flowers 5–16 in each partial umbel, pedicels (0–)1.5–7 mm., involucel absent.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Calyx-teeth minute.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Weak, glabrous annual with a slender taproot, erect or sprawling, simple or with several stems from the base, the stems strongly striate, often branched chiefly below the middle with long, ascending branches, 15–60 cm.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Lower and central stem leaves ± ovate in outline, tripinnate with filiform, 3–18 × 0.25–0.7 mm., shortly mucronate segments; sheaths 3–15 mm., strongly nerved centrally with broad membranous margins; petioles slender, 0.8–5 cm.; basal leaves often withering in ripe fruit, with usually shorter but still very narrow segments; upper leaves ± sessile, with few very long segments up to 3 cm. long.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Umbels often subsessile and appearing superficially like a group of simple umbels, mostly lateral in the axils of leaves, but when present the peduncles may reach 2 cm. long. Rays 2–5, 7–15 mm. long; bracts and bracteoles 0; partial umbels with 5–15 flowers on fine, rather irregular pedicels 2–6 mm. long.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Calyx teeth minute; petals white.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Low, weak, glabrous annual herbs up to 50 cm., sometimes branched from the base with a number of stems of equal magnitude, sometimes branched above with a distinct main stem, often semi-decumbent.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Fruit broadly elliptic to nearly round, quite strongly laterally compressed; stylopodium small, shortly conical; styles minute with almost sessile stigmatic surfaces. Ribs strongly developed and rather obtuse, with only narrow intervals between them at maturity.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Stem terete, with relatively coarse grooving.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Carpophore very slightly 2-cleft at the apex; seed subterete to pentagonal in section; vittae minute.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

    Leaves 3–4-pinnate, with narrowly linear ultimate segments 2–20 × 0–5 mm., those of the basal leaves sometimes relatively shorter and coarser; petioles with distinct sheathing bases with membranous wings.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 6
    • ]. 

     Information From

    Apiaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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
    • B
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • C Missouri Botanical Garden
    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
    • D