2.
Iva imbricata
Walter, Fl. Carol. 232. 1788.
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.
Heads
in racemiform arrays.
Peduncles
2—7+ mm.
Involucres
± campanulate to urceolate, 5—7+ mm.
Phyllaries:
outer 6—10 distinct, ± herbaceous.
Paleae
linear to spatulate (distally dilated), 5—6 mm.
Pistillate florets
2—5; corollas 0.3—1.5 mm.
Functionally staminate florets
8—12+; corollas 4—5 mm.
Cypselae
4—5 mm.
2
n
= 34.
Flowering Jul—Oct. Dunes, beaches, at or near tidelands; 0—10 m; Ala., Fla., Ga., La., Miss., N.C., S.C., Tex., Va.; West Indies (Bahamas, Cuba).
