Solidago ouachitensis

C. E. S. Taylor & R. J. Taylor

Sida 11: 334, fig. 1. 1986.

Common names: Ouachita Mountains goldenrod
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 127. Mentioned on page 126.

Plants 60–110 cm; caudices woody. Stems 1–3+, erect, straight, glabrous proximally to sparsely hairy in arrays. Leaves: basal withering by flowering; proximal cauline sessile, blades elliptic, 100–130 × 35–45 mm, margins sharply serrate (with 20–31 teeth), abaxial faces glabrous, adaxial glabrous or sparsely hairy; distal cauline sessile, blades narrowly elliptic, 65–80 × 13–24 mm, bases cuneate, margins entire to slightly serrate, apices acuminate, faces glabrous. Heads 25–50, in non-secund, short, axillary and terminal racemiform/paniculiform arrays 13–25 cm. Peduncles 0.5–3 mm, sparsely hispido-strigose; bracteoles ovate, 1–3 near each head, grading into phyllaries. Involucres narrowly campanulate, (6.5–) 7–8 mm. Phyllaries in ca. 3–4 series, unequal, 1-nerved, obtuse; outermost linear-oblong, 0.8–1.3 mm. Ray-florets 1; laminae 2.4–4.7 × ca. 1 mm. Disc-florets 4–5; corollas 1.8–2.8 mm, lobes 0.8–1.6 mm. Cypselae 1.5–2.7 mm, glabrous; pappi 3–3.5 mm. 2n = 18.


Phenology: Flowering Sep–Oct.
Habitat: Woods of north facing slopes
Elevation: 500–700 m

Discussion

Of conservation concern.

Historically Solidago ouachitensis has been included in S. caesia or S. curtisii; it is ecologically and morphologically distinct.

Solidago ouachitensis is known only from the mesic, north-facing slopes of the Ouachita Mountains along the border of Arkansas and Oklahoma. It is a very infrequent species deserving protection and is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Solidago ouachitensis"
hairy +  and glabrous +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
secund +, corymbo-paniculiform +, paniculiform +  and racemiform +
indeterminate +  and determinate +
John C. Semple +  and Rachel E. Cook +
C. E. S. Taylor & R. J. Taylor +
not persisting +
cuneate +
Solidago sect. Glomeruliflorae +
compound +  and simple +
6.5 cm65 mm <br />0.065 m <br /> (8 cm80 mm <br />0.08 m <br />) +
13mm;24mm +
rugulose +  and muricate +
Ouachita Mountains goldenrod +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ark. +  and Okla. +
500–700 m +
resinous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Woods of north facing slopes +
indeterminate +
not nodding +
heterogamous +  and homogamous +
each +  and sessile +
0.65 cm6.5 mm <br />0.0065 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 +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2.4mm;4.7mm +
erect;spreading +
triangular +  and narrowly lanceolate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
hispido-strigose +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not persisting +
Flowering Sep–Oct. +
not stipitate-glandular +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
Endemic +  and Conservation concern +
straight +
1 +  and 3 +
appendaged +  and truncate +
papillate +  and smooth +
Leioligo subg. Breviligula +, Solidago (sect. Undefined) ser. Glomeruliflorae +, Solidago subg. Pleiactila +, Axillares +, Flexicaules +  and Macrophyllae +
Solidago ouachitensis +
Solidago subsect. Glomeruliflorae +
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 />) +