Psilostrophe tagetina (Nutt.) Greene
Family: Asteraceae
Woolly Paper-Flower,  more...
[Psilostrophe cerifera var. biennis ,  more]
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Patrick Alexander  
Biennials or perennials (rarely flowering first year), 10-30(-60+) cm. Stems arachno-villous (gray to gray-green). Heads in ± loose to crowded, corymbiform arrays. Peduncles (3-)12-20(-40) mm. Involucres 4-8 mm. Rays 3-4(-6); laminae (3-)7-14+ mm, spreading in fruit. Disc florets 6-9(-12). Cypselae usually glabrous, sometimes hirtellous and/or gland-dotted; pappi of (4-)6-8 elliptic or lanceolate to lance-subulate scales 2-3+ mm. 2n = 32. Flowering (Apr-)May-Sep(-Dec). Desert scrub, grasslands, limestone soils, saline flats, sandy soils; (300-)600-2400 m; Ariz., N.Mex., Tex., Utah; Mexico (Chihuahua, Coahuila). See comments under 6. Psilostrophe villosa.

FNA 2006, Martin and Hutchins 1980, Heil, et al. 2013
Duration: Perennial Nativity: Native Lifeform: Subshrub General: Perennial herb to subshrub, 10-60 cm tall, from a woody taproot; stems clustered at the base, usually branched above, villous and gray to gray-green. Leaves: Basal leaves petiolate, withering with age; stem leaves alternate and usually sessile; basal blades obovate to spatulate, entire or pinnately lobed, to 10 cm long, villous; stem leaves smaller, linear to oblanceolate, usually less villous than basal leaves. Flowers: Flower heads showy, yellow, and radiate, numerous in corymbs at branch tips, on peduncles 1-2 cm long; involucres cylindric to campanulate, 4-7 mm high, the bracts (phyllaries) in 1-2 subequal series, densely woolly; ray florets 2-6 per flower head, the laminae (ray petals) yellow, 7-14 mm long, wider than long, shallowly lobed, spreading in fruit; disc florets 6-9 per flower head, yellow. Fruits: Achenes linear, 2 mm long, striate, glabrous or slightly hairy; topped with a pappus of 6-8 elliptic or lanceolate to lance-subulate scales, 2-3 mm long. Ecology: Found in open sites, often on limestone soils, saline flats, or sandy soils, from 2,000-8,000 ft (610-2438 m); flowers May-September. Distribution: UT and AZ, east to TX and KS; south to MEX. Ethnobotany: Used medicinally to treat stomach aches, itching, sore throats, and snake bites; also used ceremonially and to make a yellow paint or dye; known to be toxic. Synonyms: None Editor: SBuckley 2010, AHazelton 2017 Etymology: Psilostrophe is from Greek psilos, naked or bare, and trophos, a nurturer or nurse, alluding to the naked, epaleate receptacle (the "nurse"); tagetina means similar to the genus Tagetes, the marigold genus.
Psilostrophe tagetina image
Patrick Alexander  
Psilostrophe tagetina image
Patrick Alexander  
Psilostrophe tagetina image
Patrick Alexander  
Psilostrophe tagetina image
Patrick Alexander  
Psilostrophe tagetina image
Patrick Alexander  
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