Pericallis
ragwort
usually 1, erect or spreading (branched distally).
basal and cauline; alternate;
petiolate (petiole bases sometimes expanded and/or clasping);
blades palmately nerved, cordate-deltate to orbiculate or polygonally lobed, margins dentate to denticulate, faces sparsely hairy.
cylindric to urceolate, mostly 3–8+ mm diam.
flat, foveolate (socket margins membranous), epaleate.
± 13 or ± 21, pistillate, fertile;
corollas whitish or bluish, pinkish, purplish, or reddish (often proximally pale and distally darker).
40–60+, bisexual, fertile;
corollas ochroleucous, white, or purplish to reddish or pinkish, tubes longer than funnelform throats, lobes 5, erect or reflexed, deltate to lanceolate;
style branches stigmatic in 2 lines, apices truncate [with deltate appendages].
persistent, mostly 13 or 21 in (1–)2 series, erect, distinct, ± linear, subequal, margins scarious (tips green to brown or reddish, not blackened).
0.
radiate, usually in corymbiform to paniculiform arrays, rarely borne singly.
± ellipsoid (sometimes ± compressed), 4–5-ribbed, glabrous or puberulent;
pappi readily falling, usually of 20–40+, white, barbellate bristles (discs), sometimes 2 setiform to subulate scales or 0 (rays).
= 30.
Pericallis
Species ca. 15 (1 in the flora).
The taxonomic status and nomenclature of Pericallis have been treated by B. Nordenstam (1978); the origins of the florists’ cineraria have been reviewed by T. M. Barkley (1966).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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