New! - Search other data sources for Poa morrisii

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Poa morrisii

HABIT Perennial; caespitose. Rhizomes absent, or elongated. Butt sheaths herbaceous; pallid. Basal innovations extravaginal. Culms 50–90 cm long; 2–3 -noded. Culm-internodes terete; smooth; distally pubescent. Culm-nodes pubescent. Lateral branches lacking. Leaf-sheaths smooth; pubescent. Ligule a ciliolate membrane; 1–1.5 mm long; pubescent on abaxial surface; truncate. Leaf-blades flat, or involute; 15–30 cm long; 1–3.5 mm wide. Leaf-blade surface pubescent, or pilose; hairy on both sides.

INFLORESCENCE Inflorescence a panicle. Peduncle smooth.

Panicle open; elliptic; 9–25 cm long. Primary panicle branches 1–3 -nate. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.

FERTILE SPIKELETS Spikelets comprising 3–8 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 5–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth; glabrous, or sparsely hairy. Floret callus glabrous, or woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume oblong; 0.9 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume surface pubescent. Lower glume apex acute. Upper glume oblong; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface pubescent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; elliptic in profile; 2.2–4 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliate. Lemma surface pubescent; hairy on back, or on veins. Lemma margins ciliate. Lemma apex obtuse. Palea 0.9 length of lemma. Palea keels ciliate; adorned above. Palea surface pubescent. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 1.8 mm long; yellow, or purple.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Australasia: Australia.

NOTES Poeae. Vickery.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.