Hymenoxys bigelovii (A. Gray) Parker
Family: Asteraceae
Bigelow's rubberweed
[Actinella bigelovii A.Gray,  more]
Hymenoxys bigelovii image
Max Licher  
Perennials, 20-70 cm (polycarpic, often with sparingly branched, woody caudices). Stems 1-5, green throughout or purple-red-tinted distally to throughout, usually unbranched distally, ± hairy (often tomentose proximally). Leaves: blades usually simple, rarely lobed (lobes 3), glabrous or ± hairy, eglandular or sparsely gland-dotted (basal leaf bases ± long-villous-woolly); mid leaves usually simple, rarely lobed (lobes 3, terminal lobes 1.5-3 mm wide). Heads 1-5 per plant, usually borne singly, sometimes in paniculiform arrays. Peduncles (1.5-)6-20(-29) cm, ± hairy, densely tomentose distally near involucres. Involucres hemispheric to broadly campanulate, 13-20 × 23-32 mm. Phyllaries in 2 series, unequal; outer 13-19, basally connate only slightly to 1/5 their lengths, lanceolate to narrowly lanceolate to obovate to oblanceolate, 7-11 mm, apices acuminate to acute; inner 13-18, narrowly lanceolate to oblanceolate, 8.5-12.6 mm, apices aristate. Ray florets 13-15; corollas yellow, 13-26 × 5.4-9.5 mm. Disc florets 100-250+; corollas 5.7-7.4 mm. Cypselae narrowly obpyramidal, 4.2-4.7 mm; pappi of 9-11(-15) obovate to oblanceolate, often aristate scales 4.7-7.3 mm. 2n = 30. Flowering May-Jun. Roadsides, edges of juniper-pine and pine forests; 1300-2500 m; Ariz., N.Mex.
General: Perennial, 20-70 cm tall; stems 1-5, erect, green throughout or reddish above or throughout; caudex sparingly branched; taprooted. Leaves: Basal and cauline, alternate, simple, rarely lobed (lobes 3), narrowly linear, 5-10 cm long, up to 3 mm wide, thick, fleshy, glabrous to somewhat hairy, sparsely glandular or glands absent, tomentose at the base, margins entire. Flowers: Heads mostly 1-8; involucre obconic to hemispheric; phyllaries 6-9 mm long, yellowish, whitish, or reddish, sparsely to densely tomentose; disk flowers only, 20-40, 3-4.5 mm long, yellow, densely glandular; flowers June- October. Fruits: Achene, narrowly obpyramidal, 4.2-4.7 mm long, pubescent; pappus of 9-11 obovate to oblanceolate scales. Ecology: Dry slopes, pine forests, juniper-pine woodlands, roadsides; 1500-2300 m (5000-7500 ft); Apache, Coconino, Gila, Greenlee, Navajo, and Yavapai counties; southwestern U.S. Notes: The basal rosette of Tragopogon dubius can be similar to that of Hymenoxys bigelovii, but the former is distinguished by having milky sap. Bigelow-s rubberweed can be propagated by direct sowing or transplanting. It is used medicinally by the Hopi for pain in the hips and back and also as a purgative. Editor: Springer et al. 2008
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Max Licher  
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Hymenoxys bigelovii image
Kirstin Phillips  
Hymenoxys bigelovii image
Hymenoxys bigelovii image