Iva axillaris

Pursh

Fl. Amer. Sept. 2: 743. 1813.

IllustratedEndemic
Synonyms: Iva axillaris var. robustior Hooker
Treatment appears in FNA Volume 21. Treatment on page 26.

Perennials, 10–40(–60) cm (rhizomatous). Stems erect (usually herbaceous). Leaves: petioles 0–3 mm; blades narrowly ovate or obovate to elliptic or spatulate, 15–25(–45) × 3–8(–15) mm, margins rarely toothed, faces usually ± strigose to scabrellous, gland-dotted. Heads in ± racemiform arrays. Peduncles 1–2 mm. Involucres ± hemispheric, 2–3 mm. Phyllaries: outer 3–5 ± connate, ± herbaceous. Paleae linear, 1.5–2 mm. Pistillate florets 3–5(–8); corollas 0.5–1.5 mm. Functionally staminate florets 4–8(–20+); corollas 2–2.5 mm. Cypselae 2.5–3 mm. 2n = 36, 54.


Phenology: Flowering May–Oct.
Habitat: Seasonally wet, saline habitats
Elevation: 10–2500 m

Distribution

V21-45-distribution-map.gif

Alta., B.C., Man., Sask., Ariz., Calif., Colo., Idaho, Kans., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah., Wash., Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Iva axillaris"
John L. Strother +
Alta. +, B.C. +, Man. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Kans. +, Minn. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Okla. +, Oreg. +, S.Dak. +, Tex. +, Utah. +, Wash. +, Wis. +  and Wyo. +
10–2500 m +
Seasonally wet, saline habitats +
Flowering May–Oct. +
Fl. Amer. Sept. +
Illustrated +  and Endemic +
Iva axillaris var. robustior +
Iva axillaris +
species +