Solidago buckleyi |
Solidago arenicola |
|
---|---|---|
Buckley's goldenrod |
sand goldenrod, southern racemose goldenrod |
|
Habit | Plants 60–120 cm; caudices thick, woody, roots thick. | Plants 35–80 cm; rhizomes horizontal to ascending, short, this and its branches apically caudexlike, to 5 mm thick, mostly embedded in imbricate chaffy bases of older leaves. |
Stems | 1–5+, sparsely to moderately short strigose or villous. |
1–3, terete, shallowly multicostate, glabrous, sparsely to moderately hirtellous distally (arrays). |
Leaves | basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate; cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger nerves. |
basal and proximal cauline winged-petiolate; blades mostly spatulate to oblanceolate, 100–150 × 15–32 mm, tapering, margins distally coarsely but shallowly serrate, apices acute to narrowly rounded, often narrowed to short, often brown callused tips; mid to distal cauline progressively more narrowly oblanceolate and acute, then to elliptic or lanceolate-elliptic, 35–60 × 6–10 mm, reduced distally, grading into widely ascending to spreading or reflexed bracts; faces abaxially pale, midnerves raised, deep green, level reticulum of branch nerves, margins entire, ciliate, adaxially deep green with only impressed midnerve evident. |
Peduncles | 1–6 mm, moderately canescent; bracteoles linear to lanceolate. |
stiffly, widely ascending, angulate, slightly compressed, stubby-bracteolate; bracts grading into phyllaries, sparsely hirtellous. |
Involucres | campanulate, 4.5–5.5 mm. |
turbinate, 8–12 mm. |
Ray florets | 6–8; laminae 3–4 × 1–1.5 mm wide. |
6–10; laminae 3–4 mm. |
Disc florets | 8–14; corollas 4–5 mm, lobes ca. 1.5 mm. |
11–14; corollas 6 mm, lobes ca. 2 mm. |
Phyllaries | in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular. |
(in 3–4 series) 1–1.3 mm wide, unequal, pilose-ciliate; outer mostly green, oblong, blunt, inner spatulate or linear-oblanceolate. |
Heads | 5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters. |
10–50 (1–5+ per branch), in racemiform or narrowly paniculiform arrays, mostly with primary branches widely to narrowly ascending, proximalmost usually longest. |
Cypselae | (reddish brown) 2–3 mm, glabrous; pappi 4–5 mm. |
cylindric to somewhat compressed-obconic, 1.5–4 mm, typically 5-ribbed, glabrous, abruptly narrowed to short “neck” surmounted by narrow, brownish pappus disc; pappi (white) 3–4 mm. |
2n | = 36. |
|
Solidago buckleyi |
Solidago arenicola |
|
Phenology | Flowering Sep. | Flowering (Aug–)Sep–Oct. |
Habitat | Open oak woods, ridges and slopes, bluffs | Mesic woods in deep sandy alluvium |
Elevation | 100–300 m (300–1000 ft) | 100–200 m (300–700 ft) |
Distribution |
AR; IL; IN; KY; MO
|
AL; TN |
Discussion | Solidago buckleyi is an uncommon species of mesic woods, most variable in the size and number of teeth on the large mid cauline leaves. Once seen, usually it is not easily confused with S. petiolaris. Reports from farther east are for plants of S. petiolaris. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Solidago arenicola is known from the flood plain of the Locust Fork River, Blount County, Alabama. The Tennessee plants that have been treated as Solidago simplex var. racemosa are included here in this large-headed southern species. Further work is needed to confirm this placement. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 118. | FNA vol. 20, p. 116. |
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Thyrsiflorae | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Humiles |
Sibling taxa | ||
Synonyms | Aster buckleyi | |
Name authority | Torrey & A. Gray: Fl. N. Amer. 2: 198. (1842) | B. R. Keener & Kral: Sida 20: 1589, fig. 1. (2003) |
Web links |