Family:
Polygonaceae Juss.
Genus:
Oxygonum Burch. ex Campd.

Oxygonum subfastigiatum R.A.Graham

This species is accepted, and its native range is S. Tanzania.

[FTEA]

Polygonaceae, R. A. Graham. Flora of Tropical East Africa. 1958

Morphology General Habit
A perennial much-branched herb.
Morphology Stem
Stems woody, reddish-brown, bearing many congested, persistent ocreae from previous seasons’ growth, pubescent or becoming glabrous.
Morphology Leaves Ocrea
Ocreae 7 mm. long on the old stems, 2.5–7 mm. long on the new growth, membranous, glabrous or pubescent, terminally truncate and fringed with setae 5–9 mm. long.
Morphology Leaves
Leaves sessile, glabrous, congested towards the base of the current seasons growth, 25–35 × 2–2.5 mm., ± erect, subfastigiate, linear, narrowed to each end, apically mucronate, the midrib prominent below, rather revolute at the margins.
Morphology Reproductive morphology Inflorescences
Inflorescence slender, up to ± 15 cm. long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts glabrous, truncate but produced dorsally into a long point, terminally fringed with setae up to 3 mm. long.
Morphology Reproductive morphology Flowers Pedicel
Pedicels long, 7–13 mm., glabrous or puberulent, spreading becoming deflexed.
Morphology Reproductive morphology Flowers
Flowers not seen. Flowers 2–3 from each bract.
Morphology Reproductive morphology Fruits
Very immature fruit apparently prickly.
Figures
Fig. 6/5, p. 35.
Habitat
Sandy soil
Distribution
unknown beyond this single record T8

Native to:

Tanzania

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

Date Reference Identified As Barcode Type Status Has image?
Apr 16, 1956 Braun [1305], Tanzania K000244049 holotype Yes

First published in Kew Bull. 12: 156 (1957)

Accepted by

  • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.

Literature

Kew Backbone Distributions

  • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.

Flora of Tropical East Africa

  • R. Grah. in Kew Bulletin 1957: 156 (1957).

  • Flora of Tropical East Africa

    Flora of Tropical East Africa
    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