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FNA | Family List | FNA Vol. 20 | Asteraceae | Solidago

163a.4. Solidago Linnaeus (sect. Solidago ) subsect. Squarrosae A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 144. 1884.

Actipsis Rafinesque; Leioligo Rafinesque subg. Lininque Rafinesque; Solidago subg. Albigula Rafinesque; Solidago [unranked] Bicolores Rydberg; Solidago sect. Chrysastrum (Torrey & A. Gray) A. Gray; Solidago subg. Chrysastrum Torrey & A. Gray; Solidago sect. Erectae G. Don; Solidago ser. Erectae (G. Don) de Candolle; Solidago [unranked] Hispidae Mackenzie; Solidago ser. Integrifoliae G. Don; Solidago [unranked] Speciosae Rydberg; Solidago ser. Squarrosae (A. Gray) O. Hoffmann; Solidago [unranked] Squarrosae Mackenzie

Leaves: basal sometimes present in rosettes at flowering, proximalmost cauline petiolate, often present at flowering, largest, not 3-nerved. Heads in wand- to club-shaped thyrsiform-paniculiform arrays, not secund. Phyllaries not striate (except S. roanensis), sometimes stipitate-glandular. Pappus bristles usually in 2, rarely 3 series (shorter outer setiform scales rarely present, inner bristles usually strongly clavate).

Species 9 (9 in the flora): North America.

1 Rays white   13 Solidago bicolor
+ Rays yellow (may turn pale yellow with age)   (2)
2 (1) Phyllaries recurved   12 Solidago squarrosa
+ Phyllaries appressed   (3)
3 (2) Phyllaries and adjacent peduncle bracts moderately, finely stipitate-glandular; coastalplain, North Carolina   18 Solidago villosicarpa
+ Phyllaries and peduncle bracts not glandular   (4)
4 (3) Phyllaries linear-lanceolate, attenuate (tapering to acute or rounded tips)   (5)
+ Phyllaries ovate to lanceolate, acute to obtuse or rounded   (6)
5 (4) Stems and leaves strigillose; rays mostly 9–16; inner phyllaries not striate   16 Solidago puberula
+ Stems and leaves (proximal to mid stems) glabrous; rays mostly 6–9; inner phyllaries usually striate with 2 prominent secondary nerves   17 Solidago roanensis
6 (4) Cypselae persistently moderately strigose; mid cauline leaves rhombic, proximal to mid cauline leaves usually sharply serrate; sandstone and limestone bluffs and ledges along Mississippi River; Illinois, Iowa, Minnesota, Wisconsin   20 Solidago sciaphila
+ Cypselae glabrous or sparsely strigillose   (7)
7 (6) Leaves and stems sparsely to densely hispid   14 Solidago hispida (in part)
+ Leaves and stems proximal to arrays glabrous   (8)
8 (7) Stem glabrous in arrays; dunes of Lake Huron   14 Solidago hispida (in part)
+ Stems sparsely strigillose in mid to distal arrays   (9)
9 (8) Arrays of heads either narrowly thyrsiform and often interrupted or branches well spaced; mid cauline leaves 5–20 mm wide; Massachusetts to se Indiana, s to Georgia and Missis-sippi, mostly avoiding coastal plain southward   15 Solidago erecta
+ Arrays of heads usually denser, broader, and crowded, sometimes more open in robust plants, or narrow in plants outside range of S. erecta; mid cauline leaves often more than 20 mm wide; Massachusetts to Georgia, w to e prairies, to Black Hills area, scattered s in Colorado to ne New Mexico   19 Solidago speciosa

  • List of lower taxa


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