Eragrostis pygmaea De Winter

First published in Bothalia 10: 72 (1969)
This species is accepted
The native range of this species is Namibia. It is an annual and grows primarily in the desert or dry shrubland biome.

Descriptions

Morphology General Habit
Annual; caespitose. Culms erect; 4-7 cm long; 1-3 -noded. Culm-internodes distally pilose. Lateral branches lacking. Leaf-sheaths pilose; with tubercle-based hairs and capitate hairs. Ligule a fringe of hairs. Leaf-blades 1-2 cm long; 1-3 mm wide. Leaf-blade surface scaberulous; rough on both sides; pilose; hairy abaxially; with tubercle-based hairs and capitate hairs.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; linear, or lanceolate; 2-4 cm long; 1-1.5 cm wide. Primary panicle branches appressed to spreading; bearing spikelets almost to the base. Panicle axis scaberulous. Panicle branches glandular. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-16 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-7 mm long; 1-1.25 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.
Fertile
Spikelets comprising 5-16 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-7 mm long; 1-1.25 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 0.75 mm long; 0.66 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1-1.25 mm long; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 1.5 mm long; 1 mm wide; membranous; pallid, or mid-green; keeled; 3 -veined. Lemma midvein scabrous. Lemma lateral veins prominent. Lemma apex acute. Palea 0.6 length of lemma. Palea keels scabrous; eciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; fleshy. Anthers 3; oblong; 0.2 mm long; purple.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; orbicular; light brown. Embryo 0.9 length of caryopsis. Hilum punctiform.
Distribution
Africa: south.
Reference
Eragrostideae. De Winter 1993.
[GB]

Sources

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • 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 Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0