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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.
Pariana lanceolata
HABIT Perennial; caespitose. Culms erect; 25 cm long. Lateral branches lacking. Leaves cauline. Leaf-sheath oral hairs setose; 2–3 mm long. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear, or lanceolate; 5–15 cm long; 7–120 mm wide.
INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Synflorescence on the same culm as leaves. Inflorescence composed of racemes; exserted.
Racemes 1; single; erect; linear; multilateral; 4 mm wide. Rhachis fragile at the nodes; subterete. Rhachis internodes linear; 10–13 mm long. Rhachis internode tip cupuliform.
Sexes mixed (in a cluster at each node). Spikelets appressed; subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Male spikelets pedicelled; 5 in a cluster. Involucre composed of imperfect spikelets; with pedicels forming a long tube; oblong; 11–13 mm long; base obconical. Pedicels fused to each other; united along margins; oblong; flattened; 8–10 mm long; pubescent; tip rectangular.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; compressed slightly; 8–10 mm long; falling entire; deciduous with accessory branch structures.
GLUMES Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume oblong; 8–10 mm long; 1 length of upper glume; chartaceous; without keels. Lower glume apex acute. Upper glume oblong; 8–10 mm long; chartaceous; without keels. Upper glume apex acute.
FLORETS Fertile florets female. Fertile lemma oblong; 8–10 mm long; coriaceous; without keel. Lemma apex acute. Palea 1 length of lemma; coriaceous; 2 -veined; without keels.
FLOWER Lodicules 3. Anthers 3. Stigmas 2; terminally exserted. Ovary glabrous.
MALE Male spikelets distinct from female; 1 flowered; deciduous with the fertile; ovate; 3 mm long; hairy. Male spikelet glumes 2. Male spikelet lemma 3 mm long.
DISTRIBUTION South America: Brazil.
NOTES Parianeae. Gr Bahia 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
