Capitula radiate, solitary and terminal on branches or in cymes
Involucre with bracts in 2 rows; bracts dimorphic; outer bracts unequal, large, foliaceous, ciliate; inner bracts smaller
Receptacle with ± cucullate paleae
Ray florets in 1 row, female; corolla golden yellow, minutely 3-lobed
Disc florets bisexual, fertile; corolla yellow, cylindric, narrowed below, with reflexed pubescence at base, 5-lobed
Anthers obtuse or minutely sagittate at base; with apical appendage
Cypselas obovate, oblanceolate or obconical; ray cypselas triquetrous; disc cypselas 4-angled
Pappus 0
x = 5 (7, 8 - 1 report each) (aneuploids, high polyploidy, B-chromosomes)
Nomenclature:
*Guizotia Cass.
Cassini: 237 (1829)
Oliver & Hiern: 384 (1877)
Wild: 11 (1967)
Hansen: 139 (1976)
Baagøe: 1 (1974)
Karis & Ryding: 610 (1994)
Distribution & Notes:
Global: Species ± 6, tropical Africa
Southern Africa: Species 1: *Guizotia abyssinica (L.f.) Cass. occurs sporadically in Gauteng and Mpumalanga
References:
BAAGØE, J. 1974. The genus Guizotia (Compositae): a taxonomic revision. Botanisk Tidsskrift 69
CASSINI, A.H.G. DE. 1829. Dictionnaire des sciences naturelles 59. Ed. F. Cuvier. edn 2. Le Normant, Paris
HANSEN, A. 1976. Guizotia. Flora europaea 4
KARIS, P.O. & RYDING, O. 1994. Tribes Helenieae and Heliantheae. In K. Bremer, Asteraceae, cladistics and classification. Timber Press, Portland, Oregon
OLIVER, D & HIERN, W.P. 1877. Compositae. Flora of tropical Africa 3
WILD, H. 1967. The Compositae of the Flora zambesiaca area, 1. Kirkia 6
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Biodiversity Advisor, developed by the South African National Biodiversity Institute (SANBI) and its Data Partners, is a system that will provide integrated biodiversity information to a wide range of users who will have access to geospatial data, plant and animal species distribution data, ecosystem-level data, literature, images and metadata.
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