Panicum antidotale Retz.
Family: Poaceae
panizo azul,  more...
[Panicum antidotile Retz.,  more]
Panicum antidotale image
Sue Carnahan  
FNA 2003, Gould 1980, Kearney and Peebles 1969
Common Name: blue panicum Duration: Perennial Nativity: Non-Native Lifeform: Graminoid General: Stout tufted perennial grass, 0.5- 3 m tall, from knotted, pubescent rhizomes with scalelike leaves, the rhizomes to 1 cm thick; stems erect to ascending, 2-4 mm thick, compressed, hard, becoming almost woody; nodes swollen; nodes and internodes glabrous. Vegetative: Sheaths not keeled, shorter than or equal to internodes, lower sheaths partially pubescent; blades 10-60 cm long, 3-20 mm wide, elongate, flat with lower surfaces and margins scabrous, upper surfaces occasionally pubescent near the base; ligules 0.5-1.5 m Inflorescence: Open to contracted panicle, 10-45 cm long, half as wide as long; branches 4-12 cm, ascending to spreading; spikelets 3 mm long, narrowly ovoid, often purplish, short pediceled, densely clustered on branchlets, 2-flowered, the first floret staminate and the second floret bisexual; lower glume one third to half as long as spikelets, 3-5 veined; upper glume subequal to lower glume, glabrous, 5-9 veined; fertile lemma indurate, 2-3 mm long, smooth, lustrous, acute. Ecology: Found in open disturbed areas and along fields, below 5,000 ft (1524 m); flowers April to October. Distribution: Native to w Asia, from the Arabian Peninsula to the Indian Subcontinent; naturalized in the sw US, from CA to TX; south to MEX; also S. Amer., Hawaii, and Australia. Notes: The genus Panicum is defined as having unawned spikelets with 2 florets, the first floret sterile or staminate, and the second floret bisexual with a rigid lemma that clasps the palea. P. antidotale is a rhizomatous perennial grass with stout, almost reedlike stems that have obviously swollen nodes; blue-green herbage, and a densely flowered, often reddish panicle. Hopia obtusa is another stout, rhizomatous Panicum-like grass; however, that species has a narrow, contracted panicle. Panicum bulbosum (syn. Zuloagaea bulbosa), another rhizomatous perennial, has a more sparsely flowered panicle, is usually a smaller plant, and has hard, rounded, corm-like swellings at the base of the stems. P. antidotale was introduced from India by the soil conservation corps, and has now become naturalized. Ethnobotany: In India the plant was burned and the smoke used to disinfect smallpox wounds. Etymology: Panicum is a classical Latin name for millet, while antidotale is derived from the same root as antidote, probably referring to its use as a smallpox treatment. Synonyms: Panicum kermesinum, Panicum longijubatum, Panicum miliare, Panicum proliferum, Panicum subalbidum Editor: SBuckley 2010, AHazelton 2015
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Sue Carnahan  
Panicum antidotale image
Steve Hurst  
Panicum antidotale image
Panicum antidotale image
Panicum antidotale image
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Panicum antidotale image
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Panicum antidotale image
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Panicum antidotale image
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Panicum antidotale image
Panicum antidotale image
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