Boltonia caroliniana

(Walter) Fernald

Rhodora 42: 487. 1940.

Common names: Carolina doll’s-daisy
Basionym: Chrysanthemum caroliniana Walter Fl. Carol., 204. 1788
Synonyms: Boltonia ravenelii Fernald & Griscom
Treatment appears in FNA Volume 20. Treatment on page 356. Mentioned on page 354.

Plants 40–200 cm; basal offshoots, stolons present or absent. Stems erect to ascending. Leaf blades linear to narrowly oblanceolate or linear-obovate; cauline 76–140 × 18–26 mm, bases not decurrent. Heads in paniculiform arrays, branches spreading to ascending; bracts 7–35 × 1–5 mm. Peduncles 8–58 mm; bracts 1–3, linear to linear-subulate, 1–2 mm. Involucres 2–5 × 3–7 mm. Phyllaries in 2–3 series, linear-subulate, subequal, (0–)1–3(–5) merging down peduncles; outer 1.2–1.6 × 0.2–0.4 mm; inner 1.9–2.2 × 0.3–0.5 mm. Ray florets 25–36; corollas white to lilac, laminae 3–7.5 mm, tubes 0.5–0.7 mm. Disc florets 100–170; corollas 1.7–5 mm. Cypselae obovoid, 1.4–1.6 × 0.8–0.9 mm, wings 0 or 0.01–0.1 mm wide, faces mostly glabrous; pappus awns 0–0.4 mm. 2n = 18.

Phenology: Flowering Aug–Oct.
Habitat: Alluvial woods, swales, sandy wooded bottomlands
Elevation: 10–300 m


Populations of Boltonia caroliniana present in eastern South Carolina to southeastern Virginia are atypical in array and leaf dimensions. They are characterized by broad, oblanceolate or obovate leaves subtending the branches of the arrays, stiffly ascending peduncles, and lilac rays; they were described as B. ravenelii. J. T. Morgan (1966) argued that some of the plants collected in Virginia “would key out to B. caroliniana while others from the same population better fit the description of B. ravenelii.” Therefore, she placed B. ravenelii in synonymy of B. caroliniana. Detailed studies of these populations and the biology of the species may resolve their taxonomic status.

Selected References


Lower Taxa