New! - Search other data sources for Poa sandvicensis

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 sandvicensis

HABIT Perennial; culms solitary. Culms erect, or geniculately ascending; 30–100 cm long. Culm-internodes elliptical in section. Leaf-sheaths tubular for much of their length; with 1 of their length closed; keeled; smooth, or retrorsely scabrous. Ligule an eciliate membrane; 0.5–1 mm long; truncate, or obtuse. Leaf-blades 10–20 cm long; 3–6 mm wide; coriaceous. Leaf-blade surface smooth, or scaberulous; rough adaxially. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 3–15 cm long; with spikelets clustered towards branch tips. Primary panicle branches whorled at most nodes; 3–10 cm long. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas; pubescent. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume ovate; 3 mm long; 0.7–0.8 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acuminate.

FLORETS Fertile lemma elliptic; lanceolate in profile; 4–5 mm long; membranous; keeled; 5 -veined. Lemma midvein scaberulous. Lemma surface scabrous; rough on veins; glabrous. Lemma apex acuminate. Palea 1 length of lemma. Palea keels scabrous; adorned above. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Pacific: north-central.

NOTES Poeae. WDC.

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