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163a.2. Solidago Linnaeus (sect. Solidago ) subsect. Humiles (Rydberg) Semple, Sida. 20: 1606. 2003.
Solidago [unranked] Humiles Rydberg, Fl. Rocky Mts., 868. 1917
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).
Species 5 (5 in the flora): North America, Mexico.
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| 1 |
Leaves (and arrays) copiously viscid |
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(2) |
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Leaves (and peduncles and phyllaries) slightly resinous |
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(3) |
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| 2 (1) |
Stems 10–40(–50) cm; basal leaves spatulate, 40–120 mm; dunes and headlands, California, Oregon |
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4 Solidago spathulata |
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Stems 65–110 cm; basal leaves oblanceolate, mostly 100–200 mm; sand hills, Georgia, South Carolina |
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7 Solidago kralii |
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| 3 (1) |
Involucres 8–12 mm (along streams, Alabama, Tennessee) |
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8 Solidago arenicola |
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Involucres 3–7 mm |
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(4) |
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| 4 (3) |
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 |
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5 Solidago simplex |
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Rays 3–6; plants 40–120 cm; basal leaves linear-oblanceolate (Yadkin River, NorthCarolina) |
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6 Solidago plumosa |
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List of lower taxa
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