Solidago caesia blue-stemmed goldenrod Asteraceae SOCA2; Bx, bg, br, bz, pb, cf, sf, vc, wv (Yost et al. 1991); NY, hb; Q, a, cu, f; R, cl, fw, gb, h;

 

Solidago caesia2

Solidago caesia.M. B. Gargiullo (2011).

Solidago caesia is a perennial herb, 30 cm to 1 m tall, from a stout, woody base, sometimes sparsely colonial from creeping rhizomes, stems slender, waxy, pale blue-green or purplish. 

Leaves alternate 6-12 cm long, 1-3 cm wide, narrow, pointed at both ends, margin toothed, stalk none (or small). 

Solidago caesia.close-up.Deb Thompson. www.MyWildflowers.comm

Solidago caesia.close-up.Deb Thompson. www.MyWildflowers.com (Accessed 3/2017).

Flowers yellow, of two types, in small heads subtended by bracts, ray flowers 3-4, disk flowers 5-8, bracteate base of flower heads 0.3-0.4 cm tall; inflorescence of dense clusters of flower heads in leaf axils along top of stems, sometimes branching in large plants; insect pollinated (Abrahamson and Gadgil 1973); blooms Aug.-Oct. 

Fruit dry, achenes, hairy, plumed, wind dispersed. 

Wetland status: FACU. 

Frequency in NYC: Occasional 

Origin: Native. 

Habitat: Undisturbed forest understory, shade tolerant. Tolerates acid soil down to pH 4.0. Often planted in forest understory restorations.