Flora of North America species comparison

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Arctotheca

Cape weed
Habit Perennials (sometimes flowering first year), (4–)8–20(–30+) cm (usually stoloniferous and/or rhizomatous).
Stems

decumbent or creeping to ± erect.
Leaves

basal and cauline;

petiolate;

blades mostly obovate, margins usually pinnatifid to pinnatisect (often lyrate to runcinate) [entire], abaxial faces ± white-woolly, adaxial sparsely puberulent to arachnose (glabrate).
Involucres

hemispheric to campanulate, 10–15[–20+] mm diam.
Receptacles

flat, alveolate or smooth, epaleate.
Ray florets

neuter (staminodes sometimes present);

corollas adaxially yellow (sometimes drying bluish) or ± bluish, laminae 4-veined, 3-toothed.
Disc florets

bisexual, fertile;

corollas yellow or purplish to brownish.
Phyllaries

in 3–6+ series, distinct, ovate or oblong to linear, unequal, margins ± scarious, apices ± acute to acuminate, abaxial faces glabrous or arachnose.
Cypselae

± obovoid or ± prismatic (4-angled), ribs 3–5, faces usually villous or woolly [glabrate];

pappi usually present, persistent, of 7–9+ scales (borne within callous borders crowning cypselae) [sometimes none].
x

= 9.

Arctotheca
Distribution
from USDA
South Africa; Mozambique [Introduced in North America]
[BONAP county map]
Discussion

Species 4 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 197. Author: Alison McKenzie Mahoney.
Parent taxa Asteraceae > tribe Arctotideae
Subordinate taxa
A. calendula
Name authority J. C. Wendland: Bot. Beob., 41. (1798): Hort. Herrenhus. 1: 8, plate 6. (1798)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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