Solidago sempervirens subsp. mexicana

(Linnaeus) Semple

Sida 20: 1615. 2003.

Basionym: Solidago mexicana Linnaeus Sp. Pl. 2: 879. 1753
Synonyms: Aster mexicanus (Linnaeus) Kuntze S. sempervirens var. mexicana (Linnaeus) Fernald
Treatment appears in FNA Volume 20. Treatment on page 137.

Involucres 3–4 mm. Rays 7–11. Disc-florets ca. 10–16.2n =18.


Phenology: Flowering Sep–Dec.
Habitat: Dunes by ocean, edges of brackish marshes
Elevation: 0–10 m

Distribution

V20-288-distribution-map.gif

Ala., Conn., Del., Fla., Ga., La., Md., Mass., Miss., N.J., N.Y., N.C., Pa., R.I., S.C., Tex., Va., Mexico (Tabasco), Mexico (Tamaulipas), Mexico (Veracruz), West Indies, Central America

Discussion

Subspecies mexicana is found along the coast from Massachusetts to Texas and southward. It may hybridize with Solidago stricta along the Florida Gulf coast.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
John C. Semple +  and Rachel E. Cook +
(Linnaeus) Semple +
subclasping +
not persisting +
decurrent +
Solidago mexicana +
compound +  and simple +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceolate;acute;narrowly ovate;oblanceolate +
reduced +
thick;5mm;10mm +
rugulose +  and muricate +
spreading-recurved +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Conn. +, Del. +, Fla. +, Ga. +, La. +, Md. +, Mass. +, Miss. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +, Tex. +, Va. +, Mexico (Tabasco) +, Mexico (Tamaulipas) +, Mexico (Veracruz) +, West Indies +  and Central America +
0–10 m +
resinous +
stipitate-glandular +, puberulent +, pilose +, glabrous +, glabrous or +  and sparsely densely scabrous strigillose or villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dunes by ocean, edges of brackish marshes +
leafy +  and secund +
indeterminate +
heterogamous +  and homogamous +
secund-pyramidal +  and broadly club-shaped +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5mm;6.2mm +
0.4mm;0.6mm +
cauline +, proximal +  and basal +
tapering +
erect;spreading +
triangular +  and narrowly lanceolate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hairy +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not persisting +
Flowering Sep–Dec. +
stipitate-glandular +
lanceolate +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
ascending +  and erect +
1 +  and 10 +
appendaged +  and truncate +
papillate +  and smooth +
Aster mexicanus +  and S. sempervirens var. mexicana +
Solidago sempervirens subsp. mexicana +
Solidago sempervirens +
subspecies +
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 />) +