Solidago subsect. Thyrsiflorae

(A. Gray) A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 146. 1884.

Basionym: Solidago sect. Thyrsiflorae Proc. Amer. Acad. Arts 17: 190. 1882
Synonyms: Undefined subsect. Leioligo Rafinesque Leioligo subg. Doria Rafinesque Petiolares Rydberg Petiolatae Mackenzie Wardianae Rydberg
Treatment appears in FNA Volume 20. Treatment on page 117. Mentioned on page 109.

Leaves: basal withering at flowering, proximalmost cauline leaves short-petiolate, withering at flowering, not as large as proximal and midstem leaves, not 3-nerved. Heads in thyrsiform-paniculiform arrays. Phyllaries sparsely to moderately stipitate-glandular, not striate. Pappus bristles usually in 2 series (inner usually moderately to strongly clavate).

Distribution

North America, n Mexico

Discussion

Species 5 (3 in the flora).

Selected References

None.

Key

1 Mid cauline leaves thin, 25–50 mm wide, usually sharply or coarsely toothed, not resinous;phyllaries sparsely stipitate-glandular; s Indiana to e Missouri and adjacent Arkansas Solidago buckleyi
1 Mid cauline leaves firm, thick, 5–30 mm wide, not sharply coarsely toothed (proximal cauline may be toothed), sometimes resinous and/or stipitate-glandular; phyllaries often moderately stipitate-glandular; se, sw United States > 2
2 Arrays of heads often rounded to somewhat corymbiform, becoming more paniculiform in older shoots, leafy bracts shorter than branches; cypselae ± moderately short-strigose; Arizona, New Mexico, Texas Solidago wrightii
2 Arrays of heads often much longer than broad, not rounded or somewhat corymbiform, leafy bracts often longer than branches; cypselae glabrous or sparsely short-strigose; se United States to central Oklahoma Solidago petiolaris
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
thyrsiform-paniculiform +
indeterminate +  and determinate +
John C. Semple +  and Rachel E. Cook +
(A. Gray) A. Gray in A. Gray et al. +
not persisting +
decurrent +
Solidago sect. Thyrsiflorae +
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 n 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 />) +
erect;spreading +
triangular +  and narrowly lanceolate +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
not persisting +
stipitate-glandular +
ovate-oblanceolate +
in A. Gray et al., Syn. Fl. N. Amer. +
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 +
Undefined subsect. Leioligo +, Leioligo subg. Doria +, Petiolares +, Petiolatae +  and Wardianae +
Solidago subsect. Thyrsiflorae +
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 +