Difference between revisions of "Iva annua"
Sp. Pl. 2: 988. 1753.
Synonyms: Iva annua var. caudata (Small) R. C. Jackson Iva annua var. macrocarpa (S. F. Blake) R. C. Jackson
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|name=Iva annua var. caudata | |name=Iva annua var. caudata | ||
|authority=(Small) R. C. Jackson | |authority=(Small) R. C. Jackson | ||
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|name=Iva annua var. macrocarpa | |name=Iva annua var. macrocarpa | ||
|authority=(S. F. Blake) R. C. Jackson | |authority=(S. F. Blake) R. C. Jackson | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_46.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | ||
Revision as of 16:34, 18 September 2019
Annuals, (10–)50–100(–150+) cm. Stems erect. Leaves: petioles 5–20(–30) mm; blades deltate or ovate to elliptic, trullate, or lanceolate, 30–100(–150)+ × 8–45(–80) mm, margins ± toothed, faces ± scabrellous, gland-dotted. Heads in ± spiciform arrays. Peduncles 0–1 mm. Involucres ± hemispheric, 3–4(–5) mm. Phyllaries: outer 3–5 distinct, ± herbaceous. Paleae linear, 2–2.5 mm. Pistillate florets 3–5; corollas 0.5–1 mm. Functionally staminate florets 8–12+; corollas 2–2.5 mm. Cypselae 2–3 mm. 2n = 34.
Phenology: Flowering Jul–Nov.
Habitat: Disturbed sites, moist soils
Elevation: 10–500 m
Distribution
Ala., Ark., Colo., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Mich., Miss., Mo., Nebr., N.Mex., N.C., N.Dak., Ohio, Okla., Pa., S.C., S.Dak., Tenn., Tex., Va., W.Va., Wis., Mexico (Tamaulipas).
Discussion
Selected References
None.
Lower Taxa
None.