Solidago hispida
Solidago sciaphila
hairy goldenrod, verge d'or hispide
shadowy goldenrod
1(–5), erect, simple, glabrous or moderately to densely hispido-villous, sometimes hairs appressed.
single (sometimes purplish brown, ridged), glabrous, strigose distally in arrays.
basal and proximal cauline tapering to winged petioles, blades broadly oblanceolate to obovate or elliptic, 35–200 (including petioles) × 15–60 mm, margins serrate or crenate, apices acute, faces sparsely to densely hispido-villous, rarely glabrous;
mid and distal cauline sessile, blades elliptic, 15–30 × 5–7 mm, rapidly reduced distally, margins entire.
basal and proximal tapering to winged petioles, blades (basal) spatulate, 20–40 mm, (proximal) obovate to oblanceolate or elliptic, 60–150(–200) × 30–55 mm, margins serrate (teeth shallow to 5 mm), ciliate, acute to obtuse, acuminate or mucronate, faces abaxially glabrate to sparsely strigose, especially on nerves, adaxially glabrous;
mid and distal cauline sessile, lancelate or oblanceolate to elliptic, 30–100 × 20–40 mm, reduced distally, margins serrate to entire distally.
1.5–2.5 mm, hispido-villous to canescent.
1–3 mm, strigose;
bracts and bracteoles lanceolate to ovate, grading into phyllaries.
campanulate, 4–6 mm.
campanulate, ca. 5 mm.
6–14;
laminae 1.5–4.5 × 0.5–1 mm.
ca. 6–10;
laminae 1.5–2.5 × 0.5 mm.
6–12;
corollas 3–4.5 mm, lobes 0.6–1.2 mm.
ca. 10;
corollas 3.5–5 mm, lobes 1–1.5 mm.
in 3–4 series, appressed, strongly unequal, midribs and tips conspicuously green, margins white, scarious, apices obtuse, glabrous or moderately strigose.
in 3–4 series, appressed, strongly unequal, outer grading from ovate bracteoles, mid oblong, rounded, inner linear-oblong, acute, glabrous.
8–250+ in usually wand-paniculiform arrays of short axillary and terminal racemiform, non-secund clusters, sometimes proximal branches elongated, ascending and bearing short axillary and terminal racemiform clusters.
20–180+ (1–6 per branch), in leafy wand-paniculiform arrays (2–)10–20(–40) cm, lateral branches usually not exceeding subtending leaf bracts.
(narrowly obconic) 1–2.5 mm, glabrous;
pappi 2.5–4 mm (sometimes distinctly clavate).
(narrowly obconic) 2.5–3 mm, moderately strigillose;
pappi ca. 4 mm (sometimes weakly clavate).
= 18.
= 36.
Solidago hispida
Solidago sciaphila
Ray floret color can fade with time, both in the field and on dried specimens, making it difficult to distinguish Solidago hispida from S. bicolor, in which it has sometimes been included. The latter tends to have slightly broader phyllaries and more obviously clavate pappus bristles. The two co-occur in some populations but do not appear to form hybrid swarms with a range in ray corolla color. Three varieties have been described on the basis of growth and pubescence features and are sometimes recognized. These may represent only extremes in continua of variation. Variety lanata has densely villous stems and leaves; such plants occur scattered through much of the range of the species. Two glabrous-stemmed varieties have been described; plants of var. tonsa are relatively small and were first described from Newfoundland; var. huronensis includes relatively tall glabrous plants found growing in sand dunes along the shore of Lake Huron in Michigan and Ontario. The latter plants have been treated as var. tonsa but the name is misapplied. Other varietal names are based on minor variations.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Solidago sciaphila is similar to S. speciosa, but the proximal leaves are obviously serrate.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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