Compilation
Ludwigia octovalvis

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Name

Identification
Jussiaea pubescens L. [family ONAGRACEAE ] Ludwigia octovalvis (Jacq.) P.H.Raven [family ONAGRACEAE ] (stored under name); Verified by Thennilapuram Parasuraman Ramamoorthy,
Related name
  • Ludwigia octovalvis
  • Jussiaea didymosperma
  • Jussiaea pubescens
  • Jussiaea salicifolia
  • Jussiaea linifolia
  • Jussiaea octonervia
  • Jussiaea angustifolia
  • Oenothera octovalvis
  • Jussieua linearis
  • Jussiaea ovalifolia
  • Jussiaea erythrocaulis
  • Ludwigia suffruticosa
  • Jussiaea linearis
  • Jussiaea suffruticosa

Flora

Entry for Ludwigia octovalvis Jacq. Raven [family ONAGRACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 4, Part 0, page 329, (1978) Author: P. H. Raven
Names
Ludwigia octovalvis Jacq. Raven [family ONAGRACEAE], in Kew Bull. 15: 476 (1962).—Binns, H.C.L.M.: 70 (1968). TAB. 83 fig. B. Type from the West Indies.
Oenothera octovalvis Jacq. [family ONAGRACEAE], Enum. Syst. Pl. Ins. Carib.: 19 (1760). Type as above.
Jussiaea pubescens L. [family ONAGRACEAE], Sp. Pl. ed. 2, 1: 555 (1762). Type from Jamaica (?).
Jussiaea angustifolia Lam. [family ONAGRACEAE], Encycl. Méth. Bot. 3: 331 (1789).—Burtt Davy, F.P.F.T.: 201 (1926).—Garcia in Contr. Conh. Fl. Moçamb. 2: 159 (1958). Type probably from the Moluccas.
Jussiaea linearis Hochst. [family ONAGRACEAE], in Flora 27: 425 (1844). Type from S. Africa.
Jussiaea angustifolia var. linearis Hochst. Harv. [family ONAGRACEAE], in Harv. & Sond., F.C. 2: 504 (1862). Type as above.
Jussiaea suffruticosa var. linearifolia Hassler [family ONAGRACEAE], in Fedde, Repert. 12: 277 (1913).—Brenan in F.T.E.A., Onagraceae: 15 (1953). Type from Paraguay.
Ludwigia pubescens L. Hara [family ONAGRACEAE], Journ. Jap. Bot. 28: 293 (1953).—A. & R. Fernandes in Garcia de Orta 5: 474 (1957). Type as for Jussiaea pubescens.
Ludwigia pubescens var. linearifolia Hassler A. & R. Fernandes [family ONAGRACEAE], in tom. cit.: 115 (1957). Type as above.
Information
Robust well-branched herb, sometimes woody at the base or even shrubby, up to 4 m. tall, subglabrous, puberulent, or densely villous. Leaves 0·7–14·5 × 0·1–4 cm., linear to subovate, narrowly or broadly cuneate at base, the apex attenuate; main veins 11–20 on each side of the midrib; petioles up to 10 mm. long. Bracteoles reduced or up to 1 mm. long. Sepals 4, 3–15 × 1–7·5 mm., ovate or lanceolate. Petals 3–17 × 2–17 mm., broadly obovate or cuneate, emarginate. Stamens 8, the epipetalous ones shorter; filaments 1–4 mm. long; anthers 0·5–4 mm. long, extrorse but soon crumbling and shedding pollen directly on the stigma. Pollen shed in tetrads. Disk slightly raised, with a white-hairy sunken nectary surrounding the base of each epipetalous stamen. Style 1·5–3·5 mm. long; stigma 1·2–3 mm. across, subglobose, shallowly 4-lobed. Capsule 17–45 × 2–8 mm., thin-walled, terete, pale brown with 8 darker ribs, readily and irregularly loculicidal; pedicel up to 10 mm. long. Seeds 0·6–0·75 × 0·5–0·7 mm., pluriseriate in each locule of the capsule, free, brown, rounded, including the raphe which is equal in size to the body of the seed and evenly transversely ridged. Chromosome number n=16 (in F.Z. area).
Range
Throughout the tropics of the world, and represented in F.Z. area by 3 subspecies

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