Solidago wrightii

A. Gray

Proc. Amer. Acad. Arts 16: 80. 1881.

Common names: Wright’s goldenrod
Synonyms: Aster brittonii Kuntze Solidago bigelovii A. Gray Solidago bigelovii var. wrightii (A. Gray) A. Gray Solidago wrightii var. adenophora S. F. Blake
Treatment appears in FNA Volume 20. Treatment on page 117. Mentioned on page 118.

Plants 20–110 cm; caudices branched, thick, and woody or rhizomes short, woody. Stems 1–30+, simple, sparsely to densely puberulent proximally to densely so in arrays. Leaves: basal and proximal winged-petiolate-subpetiolate (poorly differentiated), blades to winged petioles; blades oblanceolate, largest to 8 cm, usually smaller, gradually attenuate, margins entire, slightly undulate, sparsely to moderately soft-puberulent, somewhat viscid (stipitate-glands very small); mostly withering by flowering, new rosettes sometimes present; cauline petiolate (petioles 0.5–1 mm), blades (linear) elliptic proximally to (narrowly) lanceolate or ovate distally, largest 50–80 × 15–25 mm, reduced distally and becoming more ovate, 15–20 mm in arrays, margins entire or serrulate. Heads 1–140, not secund, in thyrsiform-paniculiform arrays, sometimes compact, nearly as wide as tall, and rounded, sometimes appearing almost rounded corymbiform, proximal branches sometimes much elongate, not secund, spreading to ascending. Peduncles 0.5–5 (–2.5) mm, densely short hispid-canescent, sparsely to densely stipitate-glandular, ± viscid; bracts small, grading into phyllaries. Involucres broadly campanulate, (3.5–) 4–5 (–5.5) mm. Phyllaries in 2–3 series, unequal, oblong to linear-lanceolate, acute to attenuate, sparsely to moderately strigose, especially distally, sparsely to densely stipitate-glandular, ± viscid. Ray-florets 6–10; laminae ca. 3–5 × 1–2 mm. Disc-florets 10–20; corollas 3–4 mm, lobes ca. 1 mm. Cypselae 1.5–2.5 mm, ± moderately short-strigose; pappi 3–4 mm. 2n = 18.


Phenology: Flowering Aug–Oct.
Habitat: Open oak-pine woods and rocky open slopes, disturbed ground
Elevation: 1000–2700 m

Distribution

V20-232-distribution-map.gif

Ariz., Colo., N.Mex., Okla., Tex., Mexico (Chihuahua), Mexico (Durango), Mexico (Sonora), Mexico (Coahuila)

Discussion

In Texas, Solidago wrightii grows primarily in the trans-Pecos region. It is one of the few usually obviously stipitate-glandular, viscid goldenrods; the stipitate glands are minute when present on other species. Two varieties have been recognized on degree of glandularity; these grade into each other to such a degree that their recognition does not appear warranted. The few plants seen from northeastern New Mexico and westernmost Oklahoma are possible variants of S. petiolaris, but overall they fit better in S. wrightii. A detailed morphometric study of this and the next two species is needed to resolve ambiguous species limits on the western Great Plains.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Solidago wrightii"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
thyrsiform-paniculiform +
serrulate +  and entire +
indeterminate +  and determinate +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate +  and lanceolate +
reduced +  and largest +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
15mm +  and 25mm +
John C. Semple +  and Rachel E. Cook +
A. Gray +
not persisting +
decurrent +
Solidago sect. Thyrsiflorae +
compound +  and simple +
attenuate;oblanceolate +
smaller +  and largest +
0 cm0 mm <br />0 m <br /> (8 cm80 mm <br />0.08 m <br />) +
rugulose +  and muricate +
Wright’s goldenrod +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
short-strigose +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, N.Mex. +, Okla. +, Tex. +, Mexico (Chihuahua) +, Mexico (Durango) +, Mexico (Sonora) +  and Mexico (Coahuila) +
1000–2700 m +
resinous +
stipitate-glandular +, puberulent +, pilose +, glabrous +, glabrous or +  and sparsely densely scabrous strigillose or villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open oak-pine woods and rocky open slopes, disturbed ground +
indeterminate +
spreading +  and ascending +
heterogamous +  and homogamous +
elongate +  and rounded +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
winged-petiolate-subpetiolate +
proximal +  and basal +
erect;spreading +
triangular +  and narrowly lanceolate +
serrulate +  and entire +
50mm;80mm +
soft-puberulent +
ovate +, lanceolate +  and undulate +
reduced +  and largest +
15mm +  and 25mm +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
stipitate-glandular +  and hispid-canescent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not persisting +
Flowering Aug–Oct. +
stipitate-glandular +  and strigose +
oblong +  and linear-lanceolate acute +
ovate-oblanceolate +
Proc. Amer. Acad. Arts +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
new +  and flowering +
exalbuminous +
decumbent +  and ascending or erect +
1 +  and 30 +
appendaged +  and truncate +
papillate +  and smooth +
Aster brittonii +, Solidago bigelovii +, Solidago bigelovii var. wrightii +  and Solidago wrightii var. adenophora +
Solidago wrightii +
Solidago subsect. Thyrsiflorae +
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 />) +