Simsia lagasceiformis

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 577. 1836.

Common names: Annual bush sunflower
Synonyms: Simsia exaristata A. Gray
Treatment appears in FNA Volume 21. Treatment on page 141. Mentioned on page 140.
Revision as of 20:36, 16 December 2019 by FNA>Volume Importer

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. Heads in tight to loose, corymbiform arrays. Peduncles 0.5–10 cm. Involucres 8–12 × 5–10 mm. Phyllaries 13–19, unequal. Ray florets 5–10; corollas orange-yellow, laminae 5.1–12 mm. Disc florets 13–27; anthers yellow proximally, usually purple to bronze distally. Cypselae 4.2–6 mm; pappi usually 2.5–4.6 mm, rarely 0. 2n = 34.


Phenology: Flowering year round (mostly Sep–Dec).
Habitat: Deserts, roadsides, open fields, borders of agricultural fields
Elevation: 100–2200 m

Distribution

V21-341-distribution-map.gif

Ariz., N.Mex., Tex., Mexico, Central America (Guatemala).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Simsia lagasceiformis"
David M. Spooner +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
Annual bush sunflower +
Ariz. +, N.Mex. +, Tex. +, Mexico +  and Central America (Guatemala). +
100–2200 m +
Deserts, roadsides, open fields, borders of agricultural fields +
Flowering year round (mostly Sep–Dec). +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Simsia exaristata +
Simsia lagasceiformis +
species +