Rudbeckia graminifolia

(Torrey & A. Gray) C. L. Boynton & Beadle

Biltmore Bot. Stud. 1: 12. 1901.

Common names: Grassleaf coneflower
Endemic
Basionym: Echinacea atrorubens var. graminifolia Torrey & A. Gray Fl. N. Amer. 2: 306. 1842
Treatment appears in FNA Volume 21. Treatment on page 56. Mentioned on page 44, 45, 52, 53.

Perennials, to 80 cm (roots fibrous). Stems moderately strigose (hairs ascending). Leaves: blades narrowly lanceolate to elliptic (grasslike, lengths 10+ times widths, not lobed), herbaceous, bases attenuate, margins entire, apices acute, faces glabrous or sparsely hirsute; basal petiolate or sessile, 10–25 × 0.5–1 cm; cauline sessile, 1–25 × 0.2–1 cm (distal smaller), bases attenuate. Heads mostly borne singly. Phyllaries to 1 cm (spreading to reflexed). Receptacles hemispheric to ovoid; paleae 4–5 mm, (apical margins glabrous) apices acuminate-cuspidate, awn-tipped, abaxial tips sparsely strigose. Ray florets 8–16; corollas orangish red to maroon, laminae elliptic to obovate, 10–25 × 3–6 mm, abaxially sparsely strigose. Discs 10–15 × 8–15 mm. Disc florets 50–300+; corollas proximally maroon, distally brown-purple, 3.9–4.4 mm; style branches ca. 1.8 mm, apices obtuse to rounded. Cypselae 2–3 mm; pappi coroniform, to 0.5 mm. 2n = 38.


Phenology: Flowering spring–fall.
Habitat: Wet, sandy flatwoods sites
Elevation: 0–30 m

Discussion

Rudbeckia graminifolia grows in the Apalachicola region.

Selected References

None.

Lower Taxa

None.
... more about "Rudbeckia graminifolia"
Lowell E. Urbatsch +  and Patricia B. Cox +
(Torrey & A. Gray) C. L. Boynton & Beadle +
Echinacea atrorubens var. graminifolia +
Grassleaf coneflower +
0–30 m +
Wet, sandy flatwoods sites +
Flowering spring–fall. +
Biltmore Bot. Stud. +
Compositae +
Rudbeckia graminifolia +
Rudbeckia sect. Rudbeckia +
species +