Hymenothrix wrightii A. Gray
Family: Asteraceae
Wright's thimblehead
Hymenothrix wrightii image
Max Licher  
Annuals or perennials, 3-6 dm. Phyllaries (8-)12-16, mostly oblong to ovate or obovate. Rays 0. Disc florets 15-30; corollas white or pinkish to purplish, 5-6 mm, lobe lengths 2-3+ times throats; anthers pinkish to purplish. Cypselae 4-5 mm; pappus scales 4-6 mm. 2n = 24. Flowering mostly late summer-fall. Rocky places, often with pinyons and junipers; 900-2300 m; Ariz., Calif., N.Mex., Tex.; Mexico (Baja California, Chihuahua, Sonora).
FNA 2006, Martin and Hutchins 1980
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Annuals or perennials with stems 30-60 cm tall, hirsute, glandular. Leaves: Lower leaves to 10 cm long, triternately divided, long petioled, upper leaves biternate, those at the summit usually 2-3 lobed. Flowers: Discoid heads on peduncles 1 cm or less, involucre campanulate, 7-10 mm, phyllaries 12-16, mostly oblong to ovate or obovate, scarious at apex and on margins; rays absent, 15-30 disc florets, corollas white or pinkish to purplish, 5-6 mm, lobe lengths 2-3 times the throats; anthers pinkish to purplish, deeply 5-parted, the tube glandular. Fruits: Cypselae 4-5 mm long, appressed pubescent. Ecology: Found in rocky sites, often in dry sites from 3,000-7,500 ft (914-2286 m); flowers June-November. Notes: Distinguished from Hymenothrix wislizeni by its white, rayless flowers and perennial habit. Ethnobotany: Unknown Etymology: Hymenothrix comes from Greek hymen, meaning membrane and thrix, bristle, while wrightii is named for Charles Wright (1811-1885) an American botanical collector. Synonyms: None Editor: SBuckley, 2010
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Max Licher  
Hymenothrix wrightii image
Ries Lindley  
Hymenothrix wrightii image
Sue Carnahan  
Hymenothrix wrightii image
Sue Carnahan  
Hymenothrix wrightii image
Sue Carnahan  
Hymenothrix wrightii image
Patrick Alexander  
Hymenothrix wrightii image
Patrick Alexander  
Hymenothrix wrightii image
Patrick Alexander  
Hymenothrix wrightii image
José Jesús Sánchez-Escalante  
Hymenothrix wrightii image
Sue Carnahan  
Hymenothrix wrightii image
José Jesús Sánchez-Escalante  
Hymenothrix wrightii image
Hymenothrix wrightii image
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