Poaceae
Agrostis

Agrostis muelleriana Vickery

First published in Contr. New South Wales Natl. Herb. 1: 103 (1941)
This species is accepted
The native range of this species is SE. Australia, New Zealand. It is a perennial and grows primarily in the subalpine or subarctic biome.

Descriptions

Morphology General Habit
Annual; caespitose. Culms erect; 20-30 cm long. Culm-nodes glabrous. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 2-3 mm long; acute. Leaf-blades filiform, or linear; conduplicate; 3-10 cm long; 1-3 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle contracted; linear; 2-6 cm long. Primary panicle branches appressed. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus glabrous.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus glabrous.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 3-3.5 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.7-3.2 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 2.7-3 mm long; hyaline; without keel; 5 -veined. Lemma apex erose; truncate; muticous, or mucronate, or awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; straight; 1-1.5 mm long overall. Palea present, or absent or minute; 0-0.33 length of lemma; hyaline.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 0.6-0.8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid; 1.3 mm long.
Distribution
Australasia: Australia and New Zealand.
Reference
Aveneae. Vickery 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