Solidago caesia

Linnaeus

Sp. Pl. 2: 879. 1753.

Common names: Blue-stem or woodland or wreath goldenrod verge d’or bleuâtre
Endemic
Synonyms: Aster caesius (Linnaeus) Kuntze
Treatment appears in FNA Volume 20. Treatment on page 126. Mentioned on page 127.

Plants (20–) 35–80 (–100) cm; rhizomes woody, caudexlike. Stems 1–10+, usually blue to purple, glaucous, arching, straight, usually simple, occasionally with 2–3 (–4) elongated lateral branches, glabrous or slightly strigose in arrays. Leaves: basal withering by flowering; proximal to mid cauline sessile, blades lanceolate, (47–) 70–100 (–150) × 8–20 (–30) mm, margins serrate (with 0–24 teeth per side), apices acuminate, faces abaxially glabrous or sparsely hairy, adaxially sparsely hairy; distal sessile, blades narrowly lanceolate, (20–) 40–70 (–100) × (3.4–) 5.6–11 (–17) mm, margins entire to slightly serrate, faces glabrous or sparsely hairy. Heads 9–380, in short, secund, axillary and terminal racemo-paniculiform clusters (4.4–) 13–36 (–58) cm. Peduncles 2–10 mm, sparsely to moderately strigose; bracteoles linear, 1–8. Involucres narrowly campanulate, (3.5–) 4.8–6 (–7.2) mm. Phyllaries in ca. 3 series, unequal, outermost lanceolate (1–1.7 mm), acute, innermost linear-oblong (2.3–4 mm), 1-nerved, obtuse to acute. Ray-florets 1–6; laminae (1.5–) 2–3 (–4) × ca. 1 mm. Disc-florets 3–6 (–9); corollas 2–3 (–4) mm, lobes (0.5–) 1–1.5 (–2) mm. Cypselae 1–2 (–2.5) mm, moderately to densely strigose; pappi 2–3 (–3.7) mm.

Distribution

V20-252-distribution-map.gif

Ont., Que., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Mass., Md., Mich., Miss., Mo., N.C., N.H., N.J., N.Y., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Va., Vt., W.Va., Wis.

Discussion

Varieties 2 (2 in the flora).

Solidago caesia is sometimes defined more broadly to include the erect-stemmed S. curtisii and S. ouachitensis.

Selected References

None.

Key

1 Proximal midcauline leaves narrowly lanceolate, 50–150 × 8–30 cm; stems strongly arching; throughout most of range Solidago caesia var. caesia
1 Proximal midcauline leaves shorter and broadly lanceolate to rhombic, 50–90 × 13–24 mm; stems weakly arching; wet lowlands of Alabama, Arkansas, Florida, Georgia, Mississippi Solidago caesia var. zedia
... more about "Solidago caesia"
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 +
Linnaeus +
not persisting +
decurrent +
Solidago sect. Glomeruliflorae +
compound +  and simple +
7 cm70 mm <br />0.07 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
lanceolate;lanceolate +
5.6mm;11mm +
rugulose +  and muricate +
Blue-stem or woodland or wreath goldenrod +  and verge d’or bleuâtre +
not 2-lipped +  and actinomorphic +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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 +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Miss. +, Mo. +, N.C. +, N.H. +, N.J. +, N.Y. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +, Vt. +, W.Va. +  and Wis. +
resinous +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
not nodding +
heterogamous +  and homogamous +
each +  and sessile +
obtuse +  and acute +
0.6 cm6 mm <br />0.006 m <br /> (0.72 cm7.2 mm <br />0.0072 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.48 cm4.8 mm <br />0.0048 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 />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
cauline +, proximal +  and mid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
erect;spreading +
triangular +  and narrowly lanceolate +
entire +  and slightly serrate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
acute +  and lanceolate +
2-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not persisting +
not stipitate-glandular +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
caudex-like +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
usually blue +  and purple +
straight +
1 +  and 10 +
appendaged +  and truncate +
papillate +  and smooth +
Aster caesius +
Solidago caesia +
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 />) +