Colorado Rubberweed

Hymenoxys floribunda (A. Gray) Cockerell, Bull. Torrey Club
31: 485. 1914.
Actinella Richardsoni floribunda A. Gray, Mem. Am. Acad. II. 4: 101. 1849. P 'tile pida floribunda A. Heller, Plant World 1: 22. 1897. Picradenia floribunda Greene, Pittonia 3: 272. 1898.
Picradenia floribunda utilis Cockerell, Bull. Colo. Coll. Mus. 1: 1. 1903. Picradenia intermedia A. Heller, Bull. Torrey Club 31: 491. 1904. Hymenoxys floribunda utilis Cockerell, Bull. Torrey Club 31: 486. 1904. Hytnenoxys floribunda arizonica Cockerell, Bull. Torrey Club 31: 488. 1904. Hymenoxys floribunda intermedia Cockerell, Bull. Torrey Club 31: 492. 1904.
A cespitose perennial, with a woody caudex, usually densely hairy on the basal leafbases; stems about 2-3 dm. high, angled and striate, slightly pubescent and glandular-granuliferous; leaves very numerous, 5-10 cm. long, glabrate, strongly punctate, divided into 1-5 narrowly linear divisions; heads numerous, in flat-topped corymbs; involucre rather turbinate, 5 mm. high, 6-8 mm. broad; outer bracts carinate, united up to the middle or nearly so, the free portions ovate, acute; inner bracts oval, erose on the margins, mucronate; ligules 7-10 mm. long, 2-4 mm. wide; disk-corollas 3.5 mm. long, glandular-puberulent; tube about 1 mm. long; achenes 2.5-3 mm. long, densely hirsute; squamellae 2 mm. long, lanceolate or ovate, acuminate, aristate-pointed.
Type locality: Santa Fe, New Mexico.
Distribution: Wyoming and Utah to New Mexico and Arizona.

Hymenoxys olivacea Cockerell, Bull. Torrey Club 31: 497
1904.
A perennial, with a woody caudex; stems 1-3 dm. high, striate; leaves dark-green, glabrous and conspicuously glandular-punctate, the basal ones entire, 6-10 cm. long, 1-2.5 mm. broad; some of the stem-leaves divided into 3 linear segments or all entire; heads several, peduncled; involucre 5 mm. high, 8-10 mm. broad; outer bracts united to beyond the middle, carinate, pale; inner bracts oval, fimbriate; ligules pale-orange, 5-7 mm. long, 3-5 mm. wide; diskcorollas 3 mm. long, densely glandular; achenes 3 mm. long, densely hirsute; squamellae 2 mm. long, broadly ovate, shortly awn-tipped.
Type locality: Hanover Hills, New Mexico.
Distribution: New Mexico.