Solidago leavenworthii

Torrey & A. Gray

Fl. N. Amer. 2: 223. 1842.

Common names: Leavenworth’s goldenrod
Endemic
Synonyms: Aster leavenworthii (Torrey & A. Gray) Kuntze
Treatment appears in FNA Volume 20. Treatment on page 157. Mentioned on page 110, 151, 158.

Plants (50–) 100–200 cm (solitary or clustered); rhizomes creeping, elongate. Stems 1–10+, erect, scabroso-puberulent proximal to arrays distally, in strips proximal to leaves. Leaves: basal 0; mid and distal cauline sometimes numerous (75+), somewhat crowded, sessile, blades (dark green) linear-lanceolate to lanceolate, 25–150 × 2–15 mm, margins serrate to entire, scabroso-ciliate, 3-nerved, faces glabrous or with short hairs in lines along nerves. Heads 50–350, in secund, usually elongate, pyramidal paniculiform arrays, branches recurved and secund. Peduncles 1–5 mm, sparsely to moderately strigillose; bracteoles 1–3, linear-lanceolate. Involucres narrowly campanulate, 3–5 mm. Phyllaries in 3–4 series, strongly unequal (greenish), outer lanceolate, inner oblong-lanceolate, margins ciliate-fimbriate apically, midnerves swollen apically, apices obtuse to rounded, glabrous. Ray-florets 10–15; laminae 2–3 × 0.1–0.6 mm. Disc-florets 6–10; corollas 3–4 mm, lobes 0.6–1.1 mm. Cypselae (narrowly obconic) 1.1–1.5 mm (ribbed), sparsely strigillose; pappi 2.5–3 mm. 2n = 18, 36, 54.


Phenology: Flowering Nov–Dec.
Habitat: Wet soils, thickets, edges of bogs, coastal plain
Elevation: 10–40 m

Distribution

V20-341-distribution-map.gif

Ala., Fla., Ga., N.C., S.C.

Discussion

Solidago leavenworthii replaces S. gigantea on the southern, outer Atlantic coastal plain and into Florida. The leaves of S. leavenworthii usually have fewer, smaller serrations than those of S. gigantea, and they have a distinctive dark, somewhat olive green color. The pyramidal array of S. leavenworthii is usually much narrower and elongate while that of S. gigantea is usually broad and not elongate.

Selected References

None.

Lower Taxa

None.
... more about "Solidago leavenworthii"
54 +, 36 +  and 18 +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and secund +
indeterminate +  and determinate +
pyramidal +  and elongate +
John C. Semple +  and Rachel E. Cook +
Torrey & A. Gray +
not persisting +
decurrent +
Triplinerviae +
compound +  and simple +
2.5 cm25 mm <br />0.025 m <br /> (15 cm150 mm <br />0.15 m <br />) +
linear-lanceolate;lanceolate +
2mm;15mm +
rugulose +  and muricate +
linear-lanceolate +
cone--shaped +
Leavenworth’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 +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, N.C. +  and S.C. +
10–40 m +
resinous +
with short hairs +  and glabrous +
serrate to entire +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Wet soils, thickets, edges of bogs, coastal plain +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
oblong-lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.3 cm3 mm <br />0.003 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 />) +
0.1mm;0.6mm +
cauline +  and mid +
erect;spreading +
triangular +  and narrowly lanceolate +
ciliate-fimbriate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not persisting +
Flowering Nov–Dec. +
stipitate-glandular +
ovate-oblanceolate +
Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
1 +  and 10 +
appendaged +  and truncate +
papillate +  and smooth +
Aster leavenworthii +
Solidago leavenworthii +
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 />) +