Tetradymia filifolia Greene
Family: Asteraceae
Thread-Leaf Horsebrush
Tetradymia filifolia image
Robert Sivinski  

Shrubs, 1-5+ dm. Stems 1-5+, erect, unarmed, tomentose to glabrescent. Leaves: primaries linear-subulate, 5-20+ mm, floccose, sometimes glabrate; secondaries linear-filiform, 3-15 mm. Heads 3-7. Peduncles 3-15 mm. Involucres turbinate, 7-10 mm. Phyllaries 4, lanceolate to obovate. Florets 4; corollas cream to bright yellow, 9-10 mm. Cypselae 3-5 mm, hirsute; pappi of 100-130 (distally dilated) bristles 6-8 mm. 2n = 120.

Flowering summer. Pinyon-juniper woodlands, sometimes gypseous soils; 1500-1800 m; N.Mex.

Tetradymia filifolia image
Robert Sivinski  
Tetradymia filifolia image
Robert Sivinski