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

This species is accepted, and its native range is New Zealand.

[GB]
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.

Native to:

New Zealand North, New Zealand South

Koeleria drucei (Edgar) Barberá, Quintanar, Soreng & P.M.Peterson appears in other Kew resources:

First published in Phytoneuron 2019-46: 4 (2019)

Literature

Kew Backbone Distributions

  • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.

  • 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 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