Difference between revisions of "Psacalium decompositum"
Phytologia 27: 260. 1973.
Illustrated
Basionym: Cacalia decomposita A. Gray Smithsonian Contr. Knowl. 5(6): 99. 1853
Synonyms: Mesadenia decomposita (A. Gray) Standley Odontotrichum decompositum (A. Gray) Rydberg
Treatment appears in FNA Volume 20. Treatment on page 622.
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|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Psacalium | |genus=Psacalium | ||
Revision as of 20:45, 27 May 2020
Perennials; caudices thick, tough. Stems subscapiform, densely hairy proximally, sparsely hairy to subglabrous distally. Leaves mostly basal; petiole lengths ± equaling blades; blades ovate or elliptic, 20–30(–40) cm, nearly as wide, deeply 3–4-pinnatisect, ultimate lobes narrowly triangular to oblong, acute; mid and distal leaves progressively smaller, bractlike. Calyculi: bractlets 2–4 mm. Phyllaries (4–)5–7 mm. Corollas 7–9 mm. Cypselae 4–5 mm; pappi 4–7 mm. 2n = 60.
Phenology: Flowering summer–early fall.
Habitat: Shady sites, open woodlands
Elevation: 1700–2600 m
Distribution
Ariz., N.Mex., Mexico (Chihuahua, Durango, Sonora).
Discussion
Psacalium decompositum barely enters the flora area in Arizona and New Mexico.
Selected References
None.
Lower Taxa
None.