Eastern Mojave Vegetation Flower head of Coll. No. 1371, Arnica fulgens  
 

 

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  Asteraceae Arnica fulgens
Scanned 24 November 2016.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, then 1.4 mi. north on Plainview Road. 15.8 km. north northwest of the GNIS location of Golden. 39.8941N, 105.2629W. WGS 1984 Elev. 1941 m. Cauline leaves opposite. Moist east-facing slope with deep grass.

Collected by permit: Jefferson County Open Space, 2016, issued: Mar 1, 2016, to: Tom Schweich.

Tom Schweich 1371. 29-May-2016

Perennial herb of wetlands or moist areas, to 35 cm., glandular hairy throughout; Leaves, mostly basal and few cauline, basal, axils with 5 mm. brown wavy hair, petiole 70 mm. + blade 60 mm. × 12 mm. wide, 5 × longer than wide, cauline, opposite, sessile, ±2 pair, much reduced; Inflorescence, single heads on peduncle to 80 mm., flowers of two kinds; Involucre, 13 mm. × 22 mm. wide; Phyllaries, 2 ±equal series, 11-12 mm.× 3 mm. wide, green with dark tips; Receptacle epaleate; Rays, #12, fertile, tube 3 mm. + blade 16 mm. × 7 mm. wide = 19 mm., corolla yellow; Disc flowers, tube 7 mm. + lobes ≤1 mm. = 8 mm.; Pappus, bristles, 9 mm., white; Anther, yellow; Achene, 5 mm., short hairy. Described from Coll. No. 1119, 28 May 2015, and Coll. No. 1371, 29 May 2016. Subtribe Arnicinae is a subtribe to Madiinae (tarweeds) and Hulseinae, which contains both Hulsea and Eatonella, both common in the Mono Lake basin.

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Date and time this page was prepared: 7/22/2021 5:03:54 PM