Poaceae
Koeleria

Koeleria drucei (Edgar) Barberá, Quintanar, Soreng & P.M.Peterson

First published in Phytoneuron 2019-46: 4 (2019)
This species is accepted
The native range of this species is New Zealand. It is a perennial and grows primarily in the temperate biome.

Descriptions

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]

Morphology General Habit
Perennial; caespitose; clumped densely. Culms 30-60 cm long. Leaf-sheaths 2-8 cm long; scaberulous, or papillose; glabrous on surface, or puberulous. Ligule a ciliolate membrane; 0.8-1 mm long; erose. Leaf-blades conduplicate; (3-)12-25(-30) cm long; (0.5-)1-4 mm wide; stiff; dark green. Leaf-blade surface scaberulous; rough adaxially, or on both sides. Leaf-blade margins scaberulous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle glabrous, or pubescent above. Panicle contracted; lanceolate; interrupted; 5-20 cm long; 1-1.5(-3) cm wide; contracted about primary branches. Primary panicle branches bearing spikelets almost to the base. Panicle axis puberulous. Panicle branches puberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels puberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose; with 1-2 mm long hairs. Floret callus pubescent. Floret callus hairs 0.5-1 mm long.
Fertile
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose; with 1-2 mm long hairs. Floret callus pubescent. Floret callus hairs 0.5-1 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume oblong, or ovate; 0.75 length of upper glume; membranous; much thinner on margins; 1-keeled. Lower glume apex acute. Upper glume elliptic, or oblong; membranous; with hyaline margins; 1-keeled. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 3.5-6 mm long; membranous; shiny; keeled; 5 -veined. Lemma midvein scaberulous. Lemma surface papillose. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.75 way up back of lemma; curved; 3.5-7.5 mm long overall. Palea gaping; hyaline. Palea keels scaberulous.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.8-1.2 mm long. Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Australasia: New Zealand.
Reference
Aveneae. Edgar 2000.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • 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

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. 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 2025. 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