Flora of North America species comparison

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Iva imbricata

dune marsh-elder, seacoast marsh elder, seacoast sumpweed
Habit Perennials or subshrubs, 30–50(–100) cm.
Stems

± decumbent to erect.
Leaves

petioles 0–2 mm;

blades narrowly lance-elliptic to lanceolate or spatulate, 1–3(–6+) cm × 4–10(–20) mm, margins usually entire, rarely toothed, faces glabrous, rarely gland-dotted.
Peduncles

2–7+ mm.
Involucres

± campanulate to urceolate, 5–7+ mm.
Pistillate florets

2–5;

corollas 0.3–1.5 mm.
Phyllaries

outer 6–10 distinct, ± herbaceous.
Heads

in racemiform arrays.
Cypselae

4–5 mm.
Paleae

linear to spatulate (distally dilated), 5–6 mm.
Functionally

staminate florets 8–12+;

corollas 4–5 mm.
2n

= 34.

Iva imbricata
Phenology Flowering Jul–Oct.
Habitat Dunes, beaches, at or near tidelands
Elevation 0–10 m (0–0 ft)
Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; VA; West Indies (Bahamas, Cuba)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 26.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ambrosiinae > Iva
Sibling taxa
I. angustifolia, I. annua, I. axillaris, I. frutescens, I. hayesiana, I. microcephala
Name authority Walter: Fl. Carol., 232. (1788)
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 Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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