Solidago faucibus

Wieboldt

Sida 20: 1596, fig. 1. 2003.

Common names: Gorge goldenrod
Endemic
Treatment appears in FNA Volume 20. Treatment on page 132. Mentioned on page 128, 129, 130.

Plants 75–150 cm; caudices branching. Stems 1, erect, glabrous proximal to (and usually into proximal portions of) arrays. Leaves: basal and proximal present at flowering, abruptly tapering to winged petioles, blades ovate, 100–200 × 80–120 mm, broadly tapering to truncate or slightly cordate (rarely) bases, margins singly or doubly serrate (teeth 1–3 (–6) mm); mid to distal cauline subsessile to sessile, blades lanceolate, 130–200 × 45–85 mm, progressively reduced distally, margins serrate (teeth 1–3 mm), abaxially glabrous, adaxially scabrous-hispidulous at least along margins. Heads 40–70, inconspicuously secund on longer branches, appearing fasciculate on shorter branches, borne in variable arrays, mostly narrow elongate and secund, consisting of axillary and terminal racemiform branches, or wider and compound, consisting of multiple array branches, proximally leafy-bracted, branches and peduncles (2.5–) 4 (–13) cm, hairy. Peduncles 2–5 mm (4–13 mm on South Carolina plants). Involucres campanulate, 4.5–6 (–7) mm. Phyllaries (10–18) in 4–6 series, ascending, lanceolate, broadly acute to obtuse, glabrous except for fimbriate-ciliate margins towards tip. Ray-florets 4–6; laminae 2.2–3.5 × 0.8–1.7 mm. Disc-florets 5–7 (–11); corollas 4–5.6 mm, lobes 1.6–2.5 mm. Cypselae 2.5–3.2 mm, short hairy at least on distal half; pappi 3–4.7 mm. 2n = 90.


Phenology: Flowering Aug–Oct.
Habitat: Mesic deciduous forests and hardwood-hemlock stands on stream terraces and adjacent proximal slopes (especially rocky, often with seepage), limestone river bluffs, mixed hardwoods over mafic rock
Elevation: 300–700 m

Discussion

In the Appalachian Plateau and Ridge and Valley physiographic provinces, Solidago faucibus shows a marked preference for gorgelike areas where rivers and creeks are entrenched in the surrounding terrain. It occurs in much more mesic sites than other taxa in the S. arguta complex.

Selected References

None.

Lower Taxa

None.
... more about "Solidago faucibus"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
secund +  and open +
indeterminate +  and determinate +
cone--shaped +
John C. Semple +  and Rachel E. Cook +
Wieboldt +
not persisting +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
broadly tapering +  and truncate or slightly cordate +
80mm;120mm +
Argutae +
13 cm130 mm <br />0.13 m <br /> (20 cm200 mm <br />0.2 m <br />) +
lanceolate;broadly tapering;truncate or slightly cordate +
reduced +
45mm;85mm +
rugulose +  and muricate +
subsessile +  and sessile +
Gorge goldenrod +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.4 cm4 mm <br />0.004 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ky. +, S.C. +, Va. +  and W.Va. +
300–700 m +
resinous +
stipitate-glandular +, puberulent +, pilose +, glabrous +, glabrous or +  and sparsely densely scabrous strigillose or villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Mesic deciduous forests and hardwood-hemlock stands on stream terraces and adjacent proximal slopes (especially rocky, often with seepage), limestone river bluffs, mixed hardwoods over mafic rock +
4 cm40 mm <br />0.04 m <br /> (13 cm130 mm <br />0.13 m <br />) +
indeterminate +
heterogamous +  and homogamous +
elongate +
4 cm40 mm <br />0.04 m <br /> (?) +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2.2mm;3.5mm +
0.8mm;1.7mm +
proximal +  and basal +
erect;spreading +
triangular +  and narrowly lanceolate +
not stipitate-glandular +
100mm;200mm +
scabrous-hispidulous +  and glabrous +
broadly tapering +  and truncate or slightly cordate +
80mm +  and 120mm +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
2 times cypsela bodies +
0.3 cm3 mm <br />0.003 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not persisting +
100mm;200mm +
broadly tapering +  and truncate or slightly cordate +
80mm;120mm +
Flowering Aug–Oct. +
broadly acute +  and obtuse +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
appendaged +  and truncate +
papillate +  and smooth +
Solidago sect. Secundiflorae +  and Vernae +
Solidago faucibus +
Solidago (sect. Solidago) ser. Argutae +
species +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
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 />) +