Flora of North America species comparison

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Simsia lagasceiformis

annual bush sunflower
Habit Annuals (rarely persisting), 20–400 cm (taprooted or fibrous rooted).
Leaves

petiole bases rarely dilated (not fused to form nodal discs), blades ovate to deltate, 2–21 × 1–16 cm, rarely 3-lobed.
Peduncles

0.5–10 cm.
Involucres

8–12 × 5–10 mm.
Ray florets

5–10;

corollas orange-yellow, laminae 5.1–12 mm.
Disc florets

13–27;

anthers yellow proximally, usually purple to bronze distally.
Phyllaries

13–19, unequal.
Heads

in tight to loose, corymbiform arrays.
Cypselae

4.2–6 mm;

pappi usually 2.5–4.6 mm, rarely 0.
2n

= 34.

Simsia lagasceiformis
Phenology Flowering year round (mostly Sep–Dec).
Habitat Deserts, roadsides, open fields, borders of agricultural fields
Elevation 100–2200 m (300–7200 ft)
Distribution
from FNA
AZ; NM; TX; Mexico; Central America (Guatemala)
[BONAP county map]
Source FNA vol. 21, p. 141.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Helianthinae > Simsia
Sibling taxa
S. calva
Synonyms S. exaristata
Name authority de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 577. (1836)
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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