Oxygonum litorale R.A.Graham

This species is accepted, and its native range is Tanzania to N. Zambia.

[FZ]

Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

Type
Type:Zambia, Chiengi, Lake Mweru, Bullock 1236 (K, holotype).
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments c. 2 mm long; anthers 0.25–0.35 × 0.20–0.25 mm, ellipsoid
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 5–7 mm long, fusiform; styles of long-styled flowers 2.25 mm long, connate for 1 mm; styles of short-styled flowers 1.5 mm long, connate for 0.5–0.75 mm
Morphology Reproductive morphology Fruits
Nut yellowish-red to brown, 8–10 mm long, fusiform, winged, armed on the angles with prickles; 3 prickles on the angles patent to retrorse and up to 4 mm long, 3 smaller prickles a little below these and in the middle of each face 3 very short prickles. Nut yellowish-red to brown, 8–10 mm long, fusiform, winged, armed on the angles with prickles; 3 prickles on the angles patent to retrorse and up to 4 mm long, 3 smaller prickles a little below these and in the middle of each face 3 very short prickles.
Ecology
On sandy banks of rivers, forming long thin lines along a dune contour, and at lakeside; c. 1000 m.
Note
Differences between this species and O. ellipticum R.A. Graham, from SW. Tanzania, seem rather inconsistent and the latter could be considered a synonym of O. littorale.
Distribution
Also in Tanzania. ZAM N Zambia
Morphology General Habit
A semi-procumbent perennial herb. A semi-procumbent perennial herb
Morphology Stem
Stems red-brown, up to 30–50 cm tall, branched, longitudinally striate, glabrous. Stems red-brown, up to 30–50 cm tall, branched, longitudinally striate, glabrous
Morphology Leaves
Leaves slightly fleshy, ± discolorous, dark green above, paler beneath, 2.5–6 × 0.4–1.5 cm, elliptic-lanceolate to ovate-elliptic, apex acute, mucronate, base attenuate into a petiole-like base, margins lobed, midrib prominent beneath, lamina glabrous with pellucid glands. Leaves slightly fleshy, ± discolorous, dark green above, paler beneath, 2.5–6 × 0.4–1.5 cm, elliptic.lanceolate to ovate-elliptic, apex acute, mucronate, base attenuate into a petiole-like base, margins lobed, midrib prominent beneath, lamina glabrous with pellucid glands
Morphology Leaves Ocrea
Ocrea 7–10 mm long, truncate and fringed at the apex with pale brown setae up to 5–8 mm long. Ocrea 7–10 mm long, truncate and fringed at the apex with pale brown setae up to 5–8 mm long
Morphology Reproductive morphology Flowers
Flowers shortly pedicellate, 1–4 in the axils of bracts, arranged in terminal and axillary spiciform racemes 10–20(30) cm long; bracts 3–6 mm long, chartaceous, obliquely truncate and produced dorsally into a subulate seta up to 3 mm long and with an apical fringe of 2–3 further setae; pedicels erect, up to 3.5–7 mm long. Male flowers not seen Flowers shortly pedicellate, 1–4 in the axils of bracts, arranged in terminal and axillary spiciform racemes 10–20(30) cm long; bracts 3–6 mm long, chartaceous, obliquely truncate and produced dorsally into a subulate seta up to 3 mm long and with an apical fringe of 2–3 further setae; pedicels erect, up to 3.5–7 mm long Hermaphrodite flowers 4–5 mm long, heterostylous; perianth white or pink, 4–5-lobed; tube 1.5–2 mm long; lobes 2.5 mm long and ovate-lanceolate Hermaphrodite flowers 4–5 mm long, heterostylous; perianth white or pink, 4–5-lobed; tube 1.5–2 mm long; lobes 2.5 mm long and ovate-lanceolate. Male flowers not seen.
sex Male
Male flowers not seen.
sex Hermaphrodite
Hermaphrodite flowers 4–5 mm long, heterostylous; perianth white or pink, 4–5-lobed; tube 1.5–2 mm long; lobes 2.5 mm long and ovate-lanceolate. Ovary 5–7 mm long, fusiform; styles of long-styled flowers 2.25 mm long, connate for 1 mm; styles of short-styled flowers 1.5 mm long, connate for 0.5–0.75 mm. Filaments c. 2 mm long; anthers 0.25–0.35 × 0.20–0.25 mm, ellipsoid.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments c. 2 mm long; anthers 0.25–0.35 × 0.20–0.25 mm, ellipsoid.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 5–7 mm long, fusiform; styles of long-styled flowers 2.25 mm long, connate for 1 mm; styles of short-styled flowers 1.5 mm long, connate for 0.5–0.75 mm.

Native to:

Tanzania, Zambia

Oxygonum litorale R.A.Graham appears in other Kew resources:

Date Reference Identified As Barcode Type Status
May 2, 1956 Bullock, A. A. [1236], Zambia K000244064 holotype

First published in Kew Bull. 12: 153 (1957)

Accepted by

  • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

Literature

Flora Zambesiaca

  • Kew Bull. 12: 153, fig. 2/1, 2 (1957). TAB. 8, fig. C.

Kew Backbone Distributions

  • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

  • Flora Zambesiaca

    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    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 2022. 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 2022. 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