Xyridaceae
Xyris

Xyris anceps Lam.

First published in Tabl. Encycl. 1: 132 (1791)
This species is accepted
The native range of this species is Tropical & S. Africa, Madagascar, N. South America to Brazil. It is an annual or perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Xyridaceae, F. N. Hepper. Flora of West Tropical Africa 3:1. 1968

Morphology General Habit
Herb
Morphology Leaves
A fan of leaves reddish at the base
Morphology Reproductive morphology Inflorescences
Inflorescence pale yellowish, 1 ft. or more high
Ecology
In wet places, rice fields and mangrove swamps.
[FWTA]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/136664537/136664541

Conservation
LC - least concern
[IUCN]

Xyridaceae, J. M. Lock, M.A., Ph.D. Flora of Tropical East Africa. 1999

Morphology General Habit
Annual or perennial herbs.
Morphology Leaves
Leaves linear, flattened, glabrous, tapering to the asymmetrically obtuse apex.
Morphology Reproductive morphology Inflorescences
Peduncles glabrous, hollow, terete but markedly 2-winged particularly towards the apex; spikes broadly ovoid to subspherical, later ovoid; sterile bracts 4, broadly obovate to suborbicular, pale golden brown with a subterminal narrowly ovate greyish dorsal mark; fertile bracts suborbicular to elliptic, very convex, golden brown with a dull brown to grey subapical triangular dorsal mark.
Morphology Reproductive morphology Flowers Perianth
Lateral sepals curved, golden brown, with an entire keel; corolla yellow.
Morphology Reproductive morphology Flowers Androecium Staminodes
Staminodes branched, the branches bearing tufts of hairs.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary obovoid to ellipsoid; stigmas much- branched, forming a dense mass.
Morphology Reproductive morphology Fruits
Capsule ellipsoid.
Morphology Reproductive morphology Seeds
Seeds ellipsoid to broadly ellipsoid, with 12–13 longitudinal ridges joined by rather prominent cross-walls.
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of West Tropical Africa

    • Flora of West Tropical 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/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Plants and People Africa

    • Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
    • © Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/