Verbesina rothrockii Robins. & Greenm.
Family: Asteraceae
Rothrock's crownbeard,  more...
[Verbesina longipes Hemsl.]
Verbesina rothrockii image
Liz Makings  
Plants 30-60+ cm (perennating bases ± erect, internodes not winged). Leaves all or mostly opposite (distal sometimes alternate); blades ovate-deltate or rhombic to lance-elliptic, 3-5 × 1-3 cm, bases subtruncate to cuneate, margins coarsely toothed to subentire, apices obtuse to acute, faces ± hirtellous to scabrellous. Heads borne singly. Involucres ± hemispheric, 10-15+ mm diam. Phyllaries 18-30+ in 3-4 series, ± erect, oblong to elliptic, 6-10+ mm. Ray florets 8-13; laminae 15-25+ mm. Disc florets 60-100+; corollas yellow. Cypselae dark brown, ± elliptic, 10 mm, faces glabrous; pappi 0-0.5 mm. 2n = 34. Flowering (May-)Aug-Sep. Rocky slopes, igneous or limestone substrates; 1200-1800 m; Ariz., N.Mex.; Mexico (Coahuila, Durango, Zacatecas).
FNA 2006, Martin and Hutchings 1980
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Perennial with erect stems, simple or few-branched 30-60 cm tall, herbage scabrous-hispidulous. Leaves: All or mostly opposite, upper ones rarely alternate, sessile, thick, ovate-deltate or rhombic to lance-elliptic blades, 3-5 cm long by 1-3 cm wide, bases subtruncate to cuneate, margins coarsely toothed to subentire, apices obtuse to acute, faces hirtellous to scabrellous. Flowers: Heads borne singly or on long naked peduncles, with hemispheric involucres 10-15 mm in diameter; phyllaries 18-30 in 3-4 series, erect, oblong to elliptic, 6-10 mm; ray florets yellow, pistillate 8-13, laminate 15-25 mm; disc florets 60-100, yellow. Fruits: Cypselae dark brown, elliptic, 10 mm, faces glabrous, with pappus 0-0.5 mm. Ecology: Found on rocky slopes, often on igneous or limestone soils from 4,000-6,000 ft (1219-1829 m); flowers June-September. Distribution: s AZ, sw NM; south to n MEX. Notes: Distinguished by its opposite leaves, 10-15 mm diameter involucres and elliptic to oblong phyllaries. Promptly loses its rays leaving globose heads; resembles Acourtia vegetatively but has larger heads and leaves with wider-spaced teeth and without marginal hairs. Ethnobotany: Unknown, but other species in the genus have uses. Etymology: Verbesina is derived from Verbena, while rothrockii is named for Dr. Joseph Trimble Rothrock (1839-1922), surgeon on the Wheeler expedition of 1873-1875. Synonyms: None Editor: SBuckley 2010, FSCoburn 2015
Verbesina rothrockii image
Liz Makings  
Verbesina rothrockii image
Patrick Alexander  
Verbesina rothrockii image
Patrick Alexander  
Verbesina rothrockii image
Patrick Alexander  
Verbesina rothrockii image
Patrick Alexander  
Verbesina rothrockii image
Liz Makings  
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image
Verbesina rothrockii image