Eastern Mojave Vegetation Coll. No. 1986, Heterotheca pumila  
 

 

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  Asteraceae Heterotheca pumila
Photographed 15 January 2019.

Coll. No. 1986, 23 July 2018, characters observed: Perennial herb, 12 cm.; Stem, purplish, short and long multicellular hairs, glandular; Leaves, cauline, alternate, well-distributed along stem, petiole, 10 mm., blade, 25 mm. × 4 mm. wide, reduced distally, oblanceolate, hairy and somewhat glandular, margin, entire, slightly revolute; Inflorescence, heads, 1 per stem, showy, >leaves; Involucre, 7 mm. × 10 mm. wide, bowl-shaped, glandulo-hispid; Phyllaries, 3+ series, 3.3-7 mm. × 0.6-1.2 mm. wide, prominent mid-vein, green center, scarious margins; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #6-8, tube 4.5 mm. + blade 8.5 mm. × 2 mm. wide, yellow, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., yellow, open; Pappus, many, 2 series, both ray and disk flowers, bristles, 0.9, 5.0 mm., barbelate; Cypsela, 2.5-3.0 mm. × 0.7 mm. wide, brown, hairy.

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Date and time this page was prepared: 10/20/2019 10:09:44 AM