Senecio actinella Greene
Family: Asteraceae
Senecio actinella image
Max Licher  
Perennials, (7-)20-30(-40+) cm (rhizomes exfoliating). Herbage densely lanate-tomentose, glabrescent (especially on adaxial faces of leaves). Stems single. Leaves mostly basal; petiolate; blades narrowly obovate, (2-)3-7(-10) × 1-2(-3+) cm, bases tapered, margins subentire to denticulate (cauline leaves bractlike). Heads 1(-3). Calyculi of (1-)5-8+ linear to filiform bractlets (lengths 1 / 3 - 3 / 4 phyllaries). Phyllaries ± 21, 8-12 mm, tips greenish (with white bristles). Ray florets ± 13; corolla laminae usually 8-10 mm (sometimes tubular, unexpanded, heads then perhaps technically disciform). Cypselae hairy. Flowering summer. In duff, rocky woodlands, especially in pine-dominated areas; 2000-3000 m; Ariz., N.Mex.; Mexico (Chihuahua, Durango). Plants of Senecio actinella with relatively small proximal leaves similar to basal leaves and adaxial leaf faces early glabrate have been recognized as var. mogollonicus; the distinction is difficult to maintain. Receptacles in Senecio actinella are sometimes insect-infested.

General: Perennial, 7-40 cm tall; stems solitary; herbage densely woolly-tomentose to nearly glabrous; rhizomatous. Leaves: Mostly basal, alternate, narrowly obovate or oblanceolate, 2-10 cm long, 1-3 mm wide, cauline blades few, bract-like, greatly reduced, thick, leathery, densely woolly pubescent to nearly glabrous, especially above, margins nearly entire to denticulate; blades petiolate. Flowers: Heads in loose corymb- to panicle-like arrays; involucre obconic, 5-7 mm long, 3-6 mm wide; phyllaries 7-10 or more, in 1-2 series, greenish to purple, puberulent, gland-dotted, the margins and apex membranous; disk flowers only, mostly 15-30, 1-2 mm long, yellowish; flowers August-September. Fruits: Achene, cylindric, ribbed, pubescent; pappus of 30-80 white to straw-colored bristles. Ecology: Coniferous forests, rocky woodlands; 1700-2900 m (5500- 9500 ft); Apache, Cochise, Coconino, and Graham counties; New Mexico, Arizona, northern Mexico. Notes: Senecio actinella may be propagated by seed or by division. Editor: Springer et al. 2008
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Max Licher  
Senecio actinella image
Sue Carnahan  
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Paul Santori  
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Paul Santori  
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Paul Santori  
Senecio actinella image
Senecio actinella image
Senecio actinella image
Paul Santori  
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image
Senecio actinella image