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Arnoglossum reniforme (Hooker) H. Robinson. Great Indian-plantain. Phen: Jun-Oct. Hab: Cove forests, floodplains, other mesic forests. Dist: PA and MN, south to SC (Gaddy 2014), GA, MS, and OK.

ID notes: The very large, reniform leaves (sometimes up to 75 cm across) are conspicuous in rich cove forests.

Origin/Endemic status: Native

Synonymy : = Ar, FNA20, Il, K2, K3, K4, Ok, Pa, Tn, Va, Anderson (1998), Barkley (1999); = Arnoglossum muehlenbergii – K1; = Cacalia muhlenbergii (Sch.-Bip.) Fernald – C, F, G, Oh3, RAB, SE1, Tat, W, Harper (1905a), Pippen (1978); = Mesadenia reniformis (Hook.) Raf. – S

Links to other floras: = Arnoglossum reniforme - FNA20

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Heliophily : 4

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Coarse, erect perennial of cove forests, rich oak-hickory forests, northern hardwood forests and clearings at middle and high elevations.

Stems: Stems conspicuously 6- to 8-grooved, unbranched, sometimes red-tinged, smooth.

Leaves: Leaves alternate, petiolate, 2-10 in. long, green on both sides; lower leaves broadly kidney-shaped with widely notched base and round-toothed margins; upper leaves kidney- to oval-shaped, notched to nearly flat at the base, with sharply toothed margins.

Inforescence:

Flowers: Composite flowers (heads) in a many-branched, terminal cluster; heads greenish-white, to 1/4 in. wide, consisting of 5 tubular disk florets, each with 5 tightly curled corolla lobes, from which protrudes a split style encased in brown column of stamens. The cylindric base of the head is a tube composed of 5 whitish-green, oblong bracts.

Fruits: Fruit a dark brown to purple, oblong achene with tuft of white hairs.

Comments:

Height: 3-8 ft.

plant sale text:

bloom table text:

description: Coarse, erect perennial of cove forests, rich oak-hickory forests, northern hardwood forests and clearings at middle and high elevations.

stems: Stems conspicuously 6- to 8-grooved, unbranched, sometimes red-tinged, smooth.

leaves: Leaves alternate, petiolate, 2-10 in. long, green on both sides; lower leaves broadly kidney-shaped with widely notched base and round-toothed margins; upper leaves kidney- to oval-shaped, notched to nearly flat at the base, with sharply toothed margins.

inflorescence:

flowers: Composite flowers (heads) in a many-branched, terminal cluster; heads greenish-white, to 1/4 in. wide, consisting of 5 tubular disk florets, each with 5 tightly curled corolla lobes, from which protrudes a split style encased in brown column of stamens. The cylindric base of the head is a tube composed of 5 whitish-green, oblong bracts.

fruits: Fruit a dark brown to purple, oblong achene with tuft of white hairs.

comments:

cultural notes:

germination code:

native range: eastern United States