Texas Goldentop

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.

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.

Euthamia camporum Greene; E. chrysothamnoides Greene; E. glutinosa Rydberg; E. pulverulenta Greene; Solidago gymnospermoides (Greene) Fernald var. callosa Harris; S. texensis Friesner

Euthamia gymnospermoides, with the common names Great Plains goldentop and Texas goldentop, is a plant in the family Asteraceae.

It is native primarily to the Great Plains and Great Lakes Region where it is found in prairies and sandy areas.

Euthamia gymnospermoides is a perennial that produces heads of yellow flowers in late summer. It is distinguished from the similar Euthamia graminifolia by having only one vein per leaf and larger flower heads.