Zinnia acerosa
Zinnia anomala
desert or shrubby or southern zinnia, desert zinnia
shortray zinnia
greenish to gray, much branched, pilose.
yellowish, much branched, strigose.
blades 1-nerved, linear to acerose, 8–20 × 1–2 mm, scabrous to glabrescent.
blades 1- or 3-nerved, linear, 15–30 × 1–4 mm, strigose.
5–35 mm.
to 25 mm.
campanulate, 3–5 × 5–7 mm.
broadly cylindric, 8–10 × 8–10 mm.
4–7;
corollas usually white, sometimes pale yellow, laminae oblong to suborbiculate, 7–10 mm.
0 or 5–8;
corollas yellow, laminae suborbiculate to ovate, 0–6(–9) mm.
8–13;
corollas yellow or tinged with purple (drying reddish), 3–6 mm, lobes 1 mm.
ca. 20;
corollas reddish, 5.5–6.2 mm, lobes 1 mm.
suborbiculate to oblong, becoming scarious proximally, appressed-hairy distally, apices obtuse, ciliate.
round to oblong, becoming scarious, appressed-hairy distally, apices rounded, ciliate.
2.4–4 mm, 3-angled (ray) or compressed (disc), ribbed, strigose or distally ciliate;
pappi usually of 1–3 unequal awns, sometimes reduced to teeth.
7–8 (ray) or 3–6 mm (disc), 3-angled (ray) or compressed (disc), ribbed, distally ciliate or scabrellous;
pappi usually of 2 or 3 equal or unequal awns.
uniformly yellow, apices obtuse, erose.
yellowish (often red-tipped), apices obtuse, erose.
= 20, 40, or 22.
= ca. 48, ca. 84.
Zinnia acerosa
Zinnia anomala
Attribution of Zinnia acerosa to Utah (S. L. Welsh et al. 1993) was based on Atwood et al. 9704 (BRY), from Moab, Grand County; the specimen was indicated as “possibly cultivated” by the collector, and it is well outside the known range of the species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
A. M. Torres (1963) speculated that Zinnia anomala, which often lacks rays or has inconspicuous rays, might be an octoploid derivative of the rather similar Z. grandiflora, which has showy yellow rays.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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