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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 dolichophylla
HABIT Perennial; caespitose. Culms erect; 60 cm long; 3–4 -noded; with 0.5 of their length below uppermost node. Culm-internodes terete; smooth. Leaf-sheaths scaberulous. Ligule an eciliate membrane; 1–2 mm long; truncate. Leaf-blades 30–60 cm long; 4 mm wide; flaccid. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade margins scaberulous. Leaf-blade apex acute.
INFLORESCENCE Dioecious. Inflorescence a panicle. Peduncle smooth, or scaberulous above.
Panicle open; ovate; 15–20 cm long; contracted about secondary branches. Primary panicle branches 5–7 -nate; whorled at most nodes; 6–12 cm long. Panicle axis scabrous. Panicle branches scabrous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus woolly.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3–3.5 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 acute. Upper glume lanceolate; 3–3.5 mm long; 0.66 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume apex acute.
FLORETS Fertile florets female. Fertile lemma ovate; elliptic in profile; 4–4.5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliate; hairy below. Lemma lateral veins prominent. Lemma surface pubescent; hairy below; hairy on veins. Lemma apex acute. 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.
MALE Male inflorescence similar to female. Male spikelets resembling female.
DISTRIBUTION South America: southern South America.
NOTES Poeae. Hackel 1995.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.