Chaptalia albicans

(Swartz) Ventenat ex B. D. Jackson

Index Kew 1: 506. 1893.

Common names: White sunbonnet
Basionym: Tussilago albicans Swartz Prodr., 113. 1788
Synonyms: Chaptalia leiocarpa (de Candolle) Urban
Treatment appears in FNA Volume 19. Treatment on page 79.

Leaves sessile or nearly so; blades obovate to obovate-elliptic, 2–14 cm, margins retrorsely serrulate to denticulate-apiculate, abaxial faces white-tomentose, adaxial faces green, glabrous or glabrate. Heads erect in bud, flowering, and fruit. Peduncles ebracteate, 6–15 cm in flowering, 12–37 cm in fruit, dilated distally. Florets: outer pistillate, corollas creamy white, rarely purple tinged, laminae 0.2–0.3 mm wide; inner florets bisexual, fertile. Cypselae 8.4–11.2 mm, beaks filiform, lengths 0.5–0.6+ times bodies, faces glabrous or sparsely glandular (usually only along the nerves). 2n = 24, ca. 29.

Phenology: Flowering (Mar–)Apr–Jul(–Nov).
Habitat: Grassy areas or open savannas, sometimes near evergreen oaks
Elevation: 0–50 m



Fla., Mexico, West Indies, Central America.


Chaptalia albicans was treated by A. Cronquist (1980) as C. dentata (Linnaeus) Cassini. The latter is known only from the West Indies (G. Nesom 1984) and contrasts with C. albicans in having outer pistillate florets with corollas white to greenish (versus white) and laminae (0.2–)0.4–0.7 mm (versus 0.2–0.3 mm) wide, style branches of pistillate florets (0.5–)0.7–0.9 mm (versus 0.8–1.3 mm), cypselae 5.5–7.5(–8.5) mm (versus 8.4–11.2 mm), orange (versus white) carpopodia, and pappus bristles 5.8–8.5 mm (versus 7.8–10.5 mm).

Selected References


Lower Taxa

... more about "Chaptalia albicans"
Guy L. Nesom +
(Swartz) Ventenat ex B. D. Jackson +
Tussilago albicans +
White sunbonnet +
Fla. +, Mexico +, West Indies +  and Central America. +
0–50 m +
Grassy areas or open savannas, sometimes near evergreen oaks +
Flowering (Mar–)Apr–Jul(–Nov). +
Chaptalia leiocarpa +
Chaptalia albicans +
Chaptalia +
species +