Geraea canescens Torr. & A. Gray
Family: Asteraceae
hairy desertsunflower,  more...
[Encelia eriocephala var. paniculata ]
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Liz Makings  
Annuals, 10-80 cm; herbage bristly and/or soft-hairy. Leaves petiolate (proximal) or sessile; blades green or gray, lanceolate or ovate to elliptic or oblanceolate, 1-10 cm, bases tapering to wings, margins entire or dentate, apices acute, faces ± canescent. Heads borne singly or in paniculiform arrays. Involucres 7-12 mm. Phyllaries green, narrowly lanceolate to linear (margins shaggy-ciliate), apices acute. Ray florets 10-21; laminae 1-2 cm. Disc corollas 4-5 mm. Cypselae 6-7 mm; pappi 3-4 mm. 2n = 36. Flowering Oct-May. Sandy desert soils; 0-1300 m; Ariz., Calif., Nev., Utah; Mexico (Baja California, Sonora).
Wiggins 1964, Kearney and Peebles 1969, Plants DB
Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Slender annual, moderately branched 10-60 cm tall, hirsute canescent and stipitate-glandular throughout, stems and peduncles eventually subglabrate. Leaves: Alternate on narrowly winged petioles .5-2.5 cm long, upper ones subsessile; leaf blades ovate, obovate, to lance-oblong, .5-4 cm wide, 1-7 cm long, acute at apex, cuneate at base, strongly 3-nerved, dentate above middle, or smaller ones entire. Flowers: Few heads, solitary to paniculate, to 5 cm in diameter; involucres 8-12 mm, unequal bracts, linear-lanceolate and acute or attenuate, 7-10 mm long, densely ciliate, long white hairs along margin, except at tip; densely glandular on back; rays 10-15, golden yellow, 10-20 mm long, 6-10 mm wide, disc corollas 5-6 mm long. Fruits: Cypselae 6-7 mm long, narrowly cuneate, silky villous, black with white margins, yellowish crown. Ecology: Found in sandy or gravelly soils from sea level to 4,500 ft (1372 m) ; flowers October-May. Ethnobotany: Unknown Etymology: Geraea is from the Greek geraios for old, while canescens means covered in short gray or white hairs. Synonyms: Geraea canescens var. canescens Editor: SBuckley, 2010
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Liz Makings  
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Patrick Alexander  
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Patrick Alexander  
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Thomas Van Devender  
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Sue Carnahan  
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Sue D. Carnahan  
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Sue Carnahan  
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Sue Carnahan  
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Sue D. Carnahan  
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Sue Carnahan  
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Sue Carnahan  
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Sue Carnahan  
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© Smithsonian Institution, National Museum of Natural History, Department of Botany  
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