Purpledisk Honeycombhead

Perennials (fibrous rooted). Stems 1–4+, branched. Leaves glabrous or sparsely hairy adaxially, hairy abaxially; basal present or absent at flowering, linear-spatulate, 7–32 × 0.4–1 cm; proximal cauline linear-spatulate, 3.8–6.2 × 0.2–0.6 cm; mid and distal cauline similar, smaller, distalmost bractlike. Peduncles 5.5–20 cm, hairy. Heads 1–4. Involucres 15–25 mm diam. Phyllaries abaxially hairy; outer green to purple, ovate, 2.9–5.4 mm, apices acute; inner purple, lanceolate, 4.5–7.6 mm, apices acuminate. Receptacles: pit borders toothed to almost entire at angles. Ray florets 8–22, tubes 3–5 mm, laminae 16–27 × 3.5–5.5 mm. Disc florets 40–190; corollas purple (at least tips), 4–7 mm; style branches purple. Cypselae 1.3–2.2 mm; pap-pi of lanceolate, entire or apically lacerate scales 1.5–2.1 mm. 2n = 36.

Balduina atropurpurea, the purpledisk honeycombhead, is a North American species of plants in the sunflower family. It is native to the southeastern United States (Florida, Georgia, Alabama, South Carolina, North Carolina).

Balduina atropurpurea is a perennial herb with branching stems. Each plant has 1-4 flower heads, each with yellow ray florets and purple disc florets. The species grows in pinelands and savannahs.

Balduina atropurpurea là một loài thực vật có hoa trong họ Cúc. Loài này được R.M.Harper mô tả khoa học đầu tiên năm 1901.