Solidago subsect. Humiles

(Rydberg) Semple

Sida 20: 1606. 2003.

Basionym: Humiles Rydberg Fl. Rocky Mts., 868. 1917
Treatment appears in FNA Volume 20. Treatment on page 112. Mentioned on page 109.

Leaves: basal sometimes present (in rosettes) at flowering, proximalmost cauline petiolate, often present at flowering, largest, not 3-nerved. Heads in wand-shaped racemiform, paniculiform, or thyrsiform arrays, not secund. Phyllaries not striate, resinous (minute glands present). Pappus bristles usually in 2, rarely in 3 series, (shorter, outer setiform scales rarely present, inner bristles weakly to strongly clavate).

Distribution

North America, Mexico

Discussion

Species 5 (5 in the flora).

Selected References

None.

Key

1 Leaves (and arrays) copiously viscid > 2
1 Leaves (and peduncles and phyllaries) slightly resinous > 3
2 Stems 10–40(–50) cm; basal leaves spatulate, 40–120 mm; dunes and headlands, California, Oregon Solidago spathulata
2 Stems 65–110 cm; basal leaves oblanceolate, mostly 100–200 mm; sand hills, Georgia, South Carolina Solidago kralii
3 Involucres 8–12 mm (along streams, Alabama, Tennessee) Solidago arenicola
3 Involucres 3–7 mm > 4
4 Rays 7–16; plants usually 10–50 cm (to 120 cm in var. gillmanii, dunes, s Lake Michigan, Lake Huron); basal leaves lanceolate, broadly to narrowly oblanceolate, obovate Solidago simplex
4 Rays 3–6; plants 40–120 cm; basal leaves linear-oblanceolate (Yadkin River, NorthCarolina) Solidago plumosa
... more about "Solidago subsect. Humiles"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
thyrsiform +, paniculiform +, racemiform +  and wand-shaped +
indeterminate +  and determinate +
John C. Semple +  and Rachel E. Cook +
(Rydberg) Semple +
not persisting +
decurrent +
Humiles +
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 />) +
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 +
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 +
Actipsis +, Aster subg. Solidago +, Leioligo +  and Oligoneuron +
Solidago subsect. Humiles +
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 +