Solidago simplex

Family: Asteraceae
Common Name: Mt. Albert goldenrod
Symbol: SOSI3
Description: Plants 5-80 cm; caudices branching. Stems 1-10+, ascending to erect, proximally glabrous, strigose in arrays. Leaves: basal and proximal cauline petiolate, blades narrowly oblanceolate, (20-)50-100(-160) (2-)5-16(-56) mm, margins serrate to crenate, apices acute to ob-tuse, glabrous; mid and distal sessile, similar, blades lanceolate to linear, 12-45 2-19 mm, reduced distally, margins entire to sparsely serrate, sometimes resinous. Heads 3-150, not secund, in narrowly elongate, paniculiform arrays, broadly so in robust plants (12.5-19 2.5-3 cm wide), consisting of short axillary and terminal racemiform clusters, proximal branches elongate in larger plants, branches glabrate to strigillose. Peduncles 3.1-10.3 mm, glabrate to sparsely strigillose; bracteoles few, linear. Involucres campanulate, 3-7 mm. Phyllaries (in 3-4 series) strongly unequal, often resinous; outer ovate, acute, inner linear-oblong, obtuse. Ray florets 7-16; laminae 2-5 0.7-0.9 mm. Disc florets 6-31; corollas 4-4.9 mm, lobes 0.6-1.3(-2) mm. Cypselae narrowly obconic, 1.9-3.2 mm, sometimes with dark ridges, strigillose; pappi 1.9-5.2 mm (bristles sometimes clavate). The somewhat viscid-resinous heads of Solidago simplex are its most distinctive feature, separating it from similar sympatric species.