Euthamia gymnospermoides

Greene

Pittonia 5: 75. 1902.

Common names: Great Plains goldentop
Endemic
Synonyms: Euthamia camporum Greene Euthamia chrysothamnoides Greene Euthamia glutinosa Rydberg Euthamia pulverulenta Greene Solidago gymnospermoides var. callosa Harris Solidago texensis Friesner
Treatment appears in FNA Volume 20. Treatment on page 99. Mentioned on page 98.

Perennials or subshrubs, 40–150 cm. Stems (simple or branched) glabrous or with scabrous lines, not glaucous. Leaves usually ascending; blades (1–)3- or -5-nerved, linear to lanceolate, 40–100(–120) × 1.4–4(–8) mm, lengths 12–49 time widths, gradually reduced distally, firm-herbaceous, margins scabrous, apices acuminate, faces abundantly and prominently gland-dotted (29–49 dots per mm²), glabrous or midveins with hairs. Heads (some or all) pedunculate (rarely all glomerate), usually in flat-topped to slightly rounded, arrays (25–)35–60% of plant heights. Involucres obconic, (4–)4.5–6.2 mm. Phyllaries usually green-tipped, outer ovate, inner linear-oblong, apices obtuse to acute (± strongly resinous). Ray florets 9–13(–16). Disc florets 3–9; corollas (3–)3.3–4.8 mm. 2n = 36, 54.


Phenology: Flowering Aug–Sep.
Habitat: Open, dry to moist, sandy areas
Elevation: 0–200 m

Distribution

V20-193-distribution-map.gif

Ont., Ark., Colo., Del., Fla., Ill., Ind., Iowa, Kans., La., Minn., Mo., Nebr., N.C., Okla., S.C., S.Dak., Tex., Va., Wis.

Discussion

Some plants from the southern Great Lakes area with tendencies to shorter involucres and narrower leaves, called Euthamia gymnospermoides by H. A. Gleason and A. Cronquist (1991) and D. J. Sieren (1981), are better included in E. caroliniana.

Selected References

None.

Lower Taxa

None.
... more about "Euthamia gymnospermoides"
Arthur Haines +
Greene +
Solidago subg. Euthamia +
Great Plains goldentop +
Ont. +, Ark. +, Colo. +, Del. +, Fla. +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Minn. +, Mo. +, Nebr. +, N.C. +, Okla. +, S.C. +, S.Dak. +, Tex. +, Va. +  and Wis. +
0–200 m +
Open, dry to moist, sandy areas +
Flowering Aug–Sep. +
Euthamia camporum +, Euthamia chrysothamnoides +, Euthamia glutinosa +, Euthamia pulverulenta +, Solidago gymnospermoides var. callosa +  and Solidago texensis +
Euthamia gymnospermoides +
Euthamia +
species +