Psacalium decompositum |
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desert indianbush, psacalium |
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Habit | 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. |
Corollas | 7–9 mm. |
Phyllaries | (4–)5–7 mm. |
Calyculi | bractlets 2–4 mm. |
Cypselae | 4–5 mm; pappi 4–7 mm. |
2n | = 60. |
Psacalium decompositum |
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Phenology | Flowering summer–early fall. |
Habitat | Shady sites, open woodlands |
Elevation | 1700–2600 m (5600–8500 ft) |
Distribution |
AZ; NM; Mexico (Chihuahua, Durango, Sonora)
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Discussion | Psacalium decompositum barely enters the flora area in Arizona and New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 622. |
Parent taxa | Asteraceae > tribe Senecioneae > Psacalium |
Synonyms | Cacalia decomposita, Mesadenia decomposita, Odontotrichum decompositum |
Name authority | (A. Gray) H. Robinson & Brettell: Phytologia 27: 260. (1973) |
Web links |