EcoFlora - Encelia resinifera

Encelia resinifera C.Clark
Family: Asteraceae button brittlebush, more...Sticky Brittlebush [Encelia frutescens var. resinosa M.E. Jones ex Blake] Max Licher	FNA Resources Curtis Clark in Flora of North America (vol. 21) Shrubs, 40-150 cm. Stems with slender branches from trunks, glabrate, developing fissured barks. Leaves cauline; petioles 2-6 mm; blades green, lanceolate to ovate, 10-25 mm, apices usually acute, sometimes obtuse, faces strigose, gland-dotted. Heads borne singly. Peduncles strigose to glabrate. Involucres 5-11 mm. Phyllaries lanceolate. Ray florets 8-13; corolla laminae 8-12 mm. Disc corollas yellow, 5-6 mm. Cypselae 5-8 mm; pappi 0. 2n = 36. Flowering May-Jul, Sep. Sandstone-derived soils; 1100-1700 m; Ariz., Utah. Plants of Encelia resinifera from the Grand Canyon of the Colorado with lengths of leaf blades and ray laminae at least three times their widths are subsp. tenuifolia.
Open Interactive Map Curtis Clark Cecelia Alexander Cecelia Alexander Max Licher Cecelia Alexander Click to Display 100 Initial Media - - - - - View All Media