Solidago rupestris

Rafinesque

Ann. Nat. 1: 14. 1820.

Common names: Rock goldenrod
Endemic
Synonyms: Aster rupestris (Rafinesque) Kuntze Solidago canadensis var. rupestris (Rafinesque) Porter
Treatment appears in FNA Volume 20. Treatment on page 157. Mentioned on page 150.

Plants 50–150 cm (solitary or clustered); rhizomes creeping, elongate. Stems 1–10+, erect, proximally glabrous, increasingly puberulent distally into arrays. Leaves: basal 0; mid and distal cauline numerous (sometime 100+ per stem), crowded, sessile or subsessile; blades linear-elliptic, mostly 50–120 × 6–12 mm, tapering at both ends, margins remotely serrulate or subentire, 3-nerved, faces glabrous or sometimes puberulent abaxially on midnerves. Heads 80–900+, in paniculiform arrays, branches recurved, secund. Peduncles 1–3 mm, sparsely strigose; bracteoles linear, 1–3. Involucres narrowly campanulate, 2–3 mm. Phyllaries in 3–4 series, linear-lanceolate, strongly unequal, midribs raised, enlarged apically, apices acute to usually obtuse or rounded, apically ciliate. Ray-florets mostly 7–11, 1–2 × 0.1–0.2 mm. Disc-florets 2–7; corollas 2–3 mm, lobes 0.4–0.6 mm. Cypselae (narrowly obconic) 1–1.5 mm, sparsely strigillose; pappi 2–2.5 mm. 2n = 18, 36.


Phenology: Flowering Jul–Sep.
Habitat: Riverbanks
Elevation: 0–200+ m

Distribution

V20-340-distribution-map.gif

Ind., Ky., Md., Pa., Tenn., Va.

Discussion

Solidago rupestris is similar to S. canadensis in head size but with fewer rays, and it is vegetatively more like S. gigantea. It is uncommon, occurring in a series of disjunct populations with an apparent gap between eastern and western areas of the range.

Selected References

None.

Lower Taxa

None.
... more about "Solidago rupestris"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
cone--shaped +
John C. Semple +  and Rachel E. Cook +
Rafinesque +
not persisting +
decurrent +
Triplinerviae +
compound +  and simple +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
tapering +
6mm;12mm +
rugulose +  and muricate +
cone--shaped +
Rock goldenrod +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ind. +, Ky. +, Md. +, Pa. +, Tenn. +  and Va. +
0–200+ m +
resinous +
puberulent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Riverbanks +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
subsessile +  and sessile +
cauline +  and mid +
erect;spreading +
triangular +  and narrowly lanceolate +
subentire +  and serrulate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
enlarged +
2-carpellate +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not persisting +
Flowering Jul–Sep. +
stipitate-glandular +
linear-lanceolate +
ovate-oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1mm +  and 0.2mm +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
1 +  and 10 +
appendaged +  and truncate +
papillate +  and smooth +
Aster rupestris +  and Solidago canadensis var. rupestris +
Solidago rupestris +
Solidago subsect. Triplinerviae +
species +
not persisting +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +