Solidago subsect. Nemorales

(Mackenzie) G. L. Nesom

Phytologia 75: 8. 1993.

Basionym: Nemorales Mackenzie in J. K. Small, Man. S.E. Fl., 1348. 1933
Synonyms: Incanae Rydberg Radulae Rydberg
Treatment appears in FNA Volume 20. Treatment on page 158. Mentioned on page 109, 110.

Stems and leaves usually moderately to densely strigoso-canescent. Leaves: basal often present in rosettes at flowering, proximalmost cauline petiolate to subpetiolate, sometimes present at flowering, largest sometimes with two prominent lateral nerves (3-nerved). Heads in variously thyrsiform-paniculiform, open to usually congested, cone-shaped, ± secund (to reflexed in S. nemoralis) arrays, proximal branches arching, secund; phyllaries 1-nerved, not stipitate-glandular, not striate. Pappus bristles usually in 2 series (inner usually weakly to moderately clavate).

Distribution

North America, Mexico

Discussion

Species 6 (5 in the flora).

Selected References

None.

Key

1 Heads secund, in rounded, secund, pseudo-corymbiform paniculiform arrays; oftenalkaline meadows and flats, Montana and Idaho s to New Mexico and Arizona Solidago nana
1 Heads usually in narrowly to broadly pyramidal, paniculiform arrays, branches secund > 2
2 Plants with short-branched caudices; arrays secund to apically recurved; prairies and open ground in e deciduous forests Solidago nemoralis
2 Plants creeping-rhizomatous; heads in thyrsiform to secund-pyramidal, paniculiform arrays > 3
3 Leaves finely scabrous, not or weakly 3-nerved; e United States Solidago radula
3 Leaves coarsely scabrous, hispid or soft-canescent, sometimes strongly 3-nerved; prairies and w United States > 4
4 Heads in paniculiform arrays, usually compact, branches broadly thyrsiform to somewhat secund pyramidal, proximal branches reflexed-recurved distally,basal leaves withering by flowering; prairies of Great Plains Solidago mollis
4 Heads in cone-shaped arrays with branches narrowly secund, or open, lax, pyramidal; basal leaves often present at flowering; from near sea to mid montane elevations, Wyoming to s Oregon, s to central Mexico Solidago velutina
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
secund +, open +  and usually congested +
indeterminate +  and determinate +
cone--shaped +
John C. Semple +  and Rachel E. Cook +
(Mackenzie) G. L. Nesom +
not persisting +
decurrent +
Nemorales +
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 +
North America +  and Mexico +
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 />) +
strigoso-canescent +
erect;spreading +
triangular +  and narrowly lanceolate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
not persisting +
not stipitate-glandular +
ovate-oblanceolate +
petiolate +  and subpetiolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
decumbent +  and ascending or erect +
appendaged +  and truncate +
papillate +  and smooth +
Incanae +  and Radulae +
Solidago subsect. Nemorales +
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 +