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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.
Panicum gardneri
HABIT Perennial. Culms rambling; 150–200 cm long (long); rooting from lower nodes. Culm-internodes distally glabrous, or pubescent. Culm-nodes glabrous. Leaf-sheaths keeled; glabrous on surface, or hirsute; with tubercle-based hairs; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a ciliolate membrane; 0.2–0.4 mm long. Collar glabrous. Leaf-blade base broadly rounded, or cordate. Leaf-blades lanceolate; 2.5–15 cm long; 5–22 mm wide. Leaf-blade margins scaberulous; glabrous, or ciliate; hairy at base. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 4–18 cm long. Primary panicle branches ascending, or spreading. Panicle branches pubescent (hairs 1,5–2.5mm); glabrous in axils.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4–5 mm long; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation stout; 0.5 mm long.
GLUMES Glumes reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate, or ovate; 3.1–3.8 mm long; 0.8 length of spikelet; membranous; much thinner on margins; without keels; 3–5 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; with hyaline margins; without keels; 5–9 -veined. Upper glume surface glabrous, or pubescent; hairy above. Upper glume apex acute.
FLORETS Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 7–9 -veined; acute. Palea of lower sterile floret 1 length of lemma. Fertile lemma elliptic; dorsally compressed; 2.9–3.5 mm long; indurate; dark brown; shiny; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
FLOWER Anthers 3; 2–2.5 mm long. Stigmas purple.
FRUIT Caryopsis with adherent pericarp; ellipsoid; 2.2 mm long.
DISTRIBUTION Asia-tropical: India.
NOTES Paniceae. Fl Ceyl 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
