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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 cabrerae
HABIT Perennial. Culms 50 cm long. Culm-internodes distally pubescent. Lateral branches sparse. Leaf-sheaths 1.5–2 cm long; striately veined; hispid; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a ciliate membrane; 0.2 mm long. Collar pubescent. Leaf-blades deciduous at the ligule; linear, or lanceolate; 4–6 cm long; 2 mm wide. Leaf-blade surface scabrous; rough on both sides; pilose; hairy on both sides. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle. Peduncle 5–7 cm long; hirsute above.
Panicle open; ovate; effuse; 4.5–6 cm long; 3.5–6 cm wide. Primary panicle branches reflexed. Panicle axis hispid. Panicle branches hispid; glabrous in axils, or pubescent in axils.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels clavate; 2–9 mm long; smooth; glabrous.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets elliptic; dorsally compressed; plano-convex; 2–2.3 mm long; 0.8–0.9 mm wide; falling entire. Rhachilla internodes elongated between glumes.
GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.1–1.3 mm long; 0.5 length of spikelet; membranous; without keels; 3 -veined. Lower glume surface villous. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 9 -veined. Upper glume surface villous. Upper glume apex acute.
FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 9 -veined; villous; acute. Palea of lower sterile floret 0.75 length of lemma. Fertile lemma elliptic; dorsally compressed; 1.9 mm long; 0.7 mm wide; indurate; without keel. Lemma surface papillose. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
FLOWER Anthers 3; 1.2 mm long.
FRUIT Caryopsis with adherent pericarp; obovoid. Embryo 0.33 length of caryopsis. Hilum elliptic.
DISTRIBUTION South America: Brazil.
NOTES Paniceae. Zuloaga 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
