Solidago subsect. Argutae

(Mackenzie) G. L. Nesom

Phytologia 75: 9. 1993.

Basionym: Argutae Mackenzie in J. K. Small, Man. S.E. Fl., 1345, 1347. 1933
Synonyms: Solidago sect. Secundiflorae Vernae Mackenzie
Treatment appears in FNA Volume 20. Treatment on page 130. Mentioned on page 109, 134, 135.

Leaves: basal sometimes present (rosettes) at flowering, proximalmost cauline petiolate, often present at flowering, largest, not 3-nerved. Heads secund in open, secund, cone-shaped arrays, lowest branches often elongate and repeating pattern, not stipitate-glandular. Phyllaries not striate, eglandular. Pappus bristles usually in 2 series (inner usually moderately clavate).

Distribution

e North America

Discussion

Species 9 (9 in the flora).

Selected References

None.

Key

1 Leaves minutely scabrous, puberulent or short-villous > 2
1 Leaves glabrous or nearly so > 4
2 Leaves scabrous on abaxial faces (hairs short with swollen bases); bogs and swamps Solidago patula
2 Leaves soft-villous or puberulent > 3
3 Rays usually 7–12; leaves moderately to densely short-villous; spring blooming; coastal plain of North Carolina, South Carolina Solidago verna
3 Rays 0–(1–2); leaves densely and finely puberulent; fall blooming; open woods, coastal plain and piedmont; North Carolina to Alabama (possibly Mississippi) Solidago brachyphylla
4 Phyllaries striate, several nerves enlarged; involucres 4.5–6(–7) mm; Kentucky, West Virginia Solidago faucibus
4 Phyllaries not striate, only main nerve enlarged (very rarely more striate in S. arguta); involucres 2.5–5.6 mm > 5
5 Plants without slender stoloniferous rhizomes Solidago arguta
5 Plants with slender stoloniferous rhizomes in addition to main, deeper rhizomes or caudices > 6
6 Proximal leaves elliptic to obovate (ovate), acute or obtuse, with narrowly attenuate bases; distal cauline leaves quickly reduced, ascending to appressed Solidago ludoviciana
6 Proximal leaves mostly ovate, acute to acuminate, with truncate to obtuse bases; distal cauline leaves gradually reduced, rarely appressed Solidago tarda
... more about "Solidago subsect. Argutae"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
secund +  and open +
indeterminate +  and determinate +
cone--shaped +
John C. Semple +  and Rachel E. Cook +
(Mackenzie) G. L. Nesom +
not persisting +
decurrent +
Argutae +
compound +  and simple +
rugulose +  and muricate +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
e North America +
resinous +
stipitate-glandular +, puberulent +, pilose +, glabrous +, glabrous or +  and sparsely densely scabrous strigillose or villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
erect;spreading +
triangular +  and narrowly lanceolate +
not stipitate-glandular +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
not persisting +
stipitate-glandular +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
decumbent +  and ascending or erect +
short-villous +, hispid +, strigillose +, strigose +  and glabrous +
appendaged +  and truncate +
papillate +  and smooth +
Solidago sect. Secundiflorae +  and Vernae +
Solidago subsect. Argutae +
Solidago sect. Solidago +
subsection +
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 />) +
tree +, shrub +  and subshrub +