Flora of North America species comparison

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Xerochrysum
Habit Annuals, biennials, or perennials, 20–90+ cm; taprooted (rhizomatous, not stoloniferous).
Stems

usually 1, erect (rarely 1–2 or more times branched; usually arachnose and ± stipitate-glandular).
Leaves

cauline; alternate;

sessile (or nearly so);

blades elliptic or spatulate to oblanceolate, lanceolate, or linear, bases cuneate, margins entire, faces concolor, usually arachnose and ± stipitate-glandular.
Involucres

± hemispheric, 10–30 mm.
Receptacles

flat, glabrous, epaleate.
Peripheral (pistillate) florets

(0–)25–50 (fewer than bisexual);

corollas yellow.
Phyllaries

in 3–8+ series, usually yellow or brown to purple, sometimes white or pinkish (opaque, stereomes not glandular), unequal, usually chartaceous toward tips (spreading at flowering, deflexed in age).
Heads

disciform, borne singly or (2–3) in loose, corymbiform arrays.
Cypselae

columnar to ± prismatic (4-angled), faces smooth, glabrous;

pappi readily falling, of 25–35+, distinct or loosely basally ± coherent, subplumose to barbellate bristles in 1 series (falling separately or in groups or rings).
Inner

(bisexual) florets 200–400;

corollas yellow (lobes erect).
x

= 12, 13, 14, 15.

Xerochrysum
Distribution
Australia; cultivated and escaping in many areas elsewhere [Introduced in North America]
[BONAP county map]
Discussion

Species 6 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 427. Author: Guy L. Nesom.
Parent taxa Asteraceae > tribe Gnaphalieae
Subordinate taxa
X. bracteatum
Synonyms Bracteantha
Name authority Tzvelev: Novosti Sist. Vyssh. Rast. 27: 151. (1990)
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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