New! - Search other data sources for Poa buchananii

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 buchananii

HABIT Perennial; caespitose; clumped densely. Butt sheaths coriaceous. Basal innovations intravaginal. Culms 7–25 cm long. Lateral branches lacking. Leaves distichous. Leaf-sheaths wider than blade at the collar; glabrous on surface. Ligule an eciliate membrane; 0.5–1.5 mm long; scaberulous on abaxial surface; erose; obtuse. Leaf-blades conduplicate; 1.5–5 cm long; 3 mm wide; coriaceous; stiff; glaucous. Leaf-blade venation prominent. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle. Peduncle scaberulous above.

Panicle spiciform; oblong; 1.5–5.5 cm long. Panicle axis scaberulous. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 2.5–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5 mm long; scaberulous. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–2.5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 2–2.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface smooth, or asperulous; rough above. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; elliptic in profile; 2–2.5 mm long; membranous; much thinner on margins; keeled; 3 -veined. Lemma midvein scabrous. Lemma surface scaberulous, or papillose; rough between veins; glabrous. Lemma apex obtuse. Palea 1.5 mm long. Palea keels scabrous; adorned above. Palea surface papillose.

FLOWER Lodicules 2; 0.3–0.4 mm long; membranous. Anthers 3; 0.4–0.6 mm long.

FRUIT Caryopsis with adherent pericarp; 1 mm long. Hilum punctiform.

DISTRIBUTION Australasia: New Zealand.

NOTES Poeae. Edgar 1995.

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