Solidago nemoralis |
Solidago lepida |
|||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Canada goldenrod, dyersweed goldenrod, field goldenrod, gray goldenrod, gray or gray-stem or old-field goldenrod, verge d'or des bois |
Canada goldenrod, Rocky Mountain goldenrod, verge d'or élégante, western Canada goldenrod, western goldenrod |
|||||||||||||
Habit | Plants 20–100 cm; caudices short-branched. | Plants 25–150 cm; rhizomes short to long creeping, forming few- to many-stemmed clones. | ||||||||||||
Stems | 1–6(–10), erect, short-canescent (hairs ascending to appressed). |
1–25 (–50+), erect, proximally glabrous or sparsely to moderately canescent-villous, distally densely so. |
||||||||||||
Leaves | basal and proximal cauline tapering to long, winged petioles, blades spatulate-ovate to oblanceolate, 20–95 × 7–15 mm, margins crenate to entire, apices acute, faces densely puberulent; mid and distal cauline (sometimes subtending axillary tufts of lateral branch leaves) sessile, blades linear-oblanceolate, 16–45 × 3–7 mm, reduced distally, margins entire. |
basal 0; proximal cauline sessile, blades narrowly to broadly oblanceolate, 100–150 × 15–23 mm, tapering to bases, margins subentire to coarsely sharply serrate, 3-nerved, sometimes obscurely so, apices acute to acuminate, abaxial faces glabrate to sparsely short villous, adaxial glabrous; mid to distal cauline sessile, blades lanceolate to narrowly elliptic, (50–)90–120(–150) × (7–) 11–23(–35) mm, largest near mid stem, then somewhat reduced distally in arrays, margins sharply and coarsely to finely serrate or entire, usually becoming less serrate near arrays, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves, distalmost (below arrays) sometimes sparsely to moderately minutely stipitate-glandular. |
||||||||||||
Peduncles | 2–3.5 mm, bracteoles 0–4, linear. |
1–4 mm, villoso-hirtellous, sometimes minutely stipitate-glandular; bracteoles 0–2, linear-lanceolate, sometimes minutely stipitate-glandular. |
||||||||||||
Involucres | narrowly campanulate, 2.6–5.8 mm. |
campanulate, (2–)2.3–3.8(–5) mm. |
||||||||||||
Ray florets | 5–11; laminae 2.8–5.5 × 0.3–0.7 mm. |
(7–)10–16(–22); laminae (0.5–)0.9–1.6(–2.2) × ca. 0.2–0.5 mm. |
||||||||||||
Disc florets | 3–10; 2.5–4.6 mm, lobes 0.4-0.6 mm. |
(2–)5–9(–13); corollas ca. (2–) 2.5–3.8(–5) mm, lobes (0.4–)0.6–1(–1.4) mm. |
||||||||||||
Phyllaries | in 3 series, ovate to linear-lanceolate, unequal, outer acute, inner obtuse. |
in 3–4 series, deltate-lanceolate, unequal (outer 1/4–1/2 length of inner), margins sparsely villoso-ciliate, sometimes minutely stipitate-glandular apically or basally, apices acute to attenuate, glabrous or sparsely to moderately, minutely stipitate-glandular apically, sometimes over much of faces. |
||||||||||||
Heads | 10–300, secund, in wandlike pyramidal, paniculiform arrays, secund to apically recurved, 8–25 × 2.5–10 cm, sometimes proximal branches elongate, repeating pattern. |
14–800+, in sometimes secund, broadly thyrsiform or secund pyramidal arrays, usually leafy proximally, branches ascending or sometimes arching-spreading, leaves often minutely stipitate-glandular. |
||||||||||||
Cypselae | (obconic) 0.5–2 mm, strigose; pappi 2–4 mm. |
(narrowly obconic) 0.6–1.2 mm, strigillose; pappi 2.5–3.3 mm. |
||||||||||||
Solidago nemoralis |
Solidago lepida |
|||||||||||||
Distribution |
AL; AR; CO; CT; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NY; OH; OK; PA; RI; SC; SD; TN; TX; VT; WI; WV; WY; AB; BC; MB; NB; NS; ON; PE; QC; SK
|
AK; AZ; CA; CO; ID; MT; NM; NV; UT; WA; WY; AB; BC; MB; NB; NF; NT; ON; QC; SK; YT
|
||||||||||||
Discussion | Subspecies 2 (2 in the flora). The arrays can be elongate with ends bent nearly 90–180°. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). Solidago lepida is the only member of subsect. Triplinerviae that is nearly always minutely, sometimes sparsely, stipitate-glandular in the arrays. These glands can be very small and visible only with 30–70× magnification. The enlarged head of the stalked gland may be little bigger than a pollen grain. The species occurs in the west from the Aleutian Islands and central Alaska south just into northern California, and in the Rocky Mountains to Arizona and New Mexico. Its range extends across Canada to Newfoundland, the Gaspé (Quebec), and northern New Brunswick. It also appears to be introduced at scattered locations across the Canadian prairies. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||||||
Key |
|
|
||||||||||||
Source | FNA vol. 20, p. 159. | FNA vol. 20, p. 155. | ||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Nemorales | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Triplinerviae | ||||||||||||
Sibling taxa | ||||||||||||||
Subordinate taxa | ||||||||||||||
Synonyms | Aster lepidus, S. canadensis var. lepida | |||||||||||||
Name authority | Aiton: Hort. Kew. 3: 213. (1789) | de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 339. (1836) | ||||||||||||
Web links |
|
|