Note - this takes you off
of our website |
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 trautvetteri
HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 17–65 cm long. Culm-internodes terete; smooth. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths tubular for much of their length. Ligule an eciliate membrane; 2–4.5 mm long; truncate. Leaf-blades conduplicate, or convolute; 6–20 cm long; 4–5 mm wide. Leaf-blade apex acute.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; linear; dense; 5–15 cm long; 1–7 cm wide. Primary panicle branches appressed; 2–4 -nate. Panicle branches smooth.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 6–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus glabrous.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate, or elliptic; 0.75 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex erose; acute. Upper glume lanceolate, or elliptic; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex erose; acute.
FLORETS Fertile lemma ovate; elliptic in profile; 4–5.25 mm long; membranous; keeled; 7 -veined. Lemma midvein ciliate. Lemma surface asperulous; pilose; hairy on veins. Lemma margins ciliate. Lemma apex acute. Palea 0.9 length of lemma. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; membranous. Anthers 3; 1.5–2.5 mm long.
FRUIT Caryopsis with adherent pericarp. Hilum punctiform.
DISTRIBUTION Asia-temperate: Siberia.
NOTES Poeae. Zlaki 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.