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Tetragonotheca helianthoides Linnaeus. Squarehead, Pineland-ginseng. Phen: Apr-Jul. Hab: Longleaf pine sandhills, sandy woodlands, open hammocks, calcareous glades, alluvial sand barren grasslands, roadsides. Dist: Se. VA and e. TN south to c. peninsular FL and s. MS.

Origin/Endemic status: Endemic

Synonymy ⓘ: = C, F, Fl7, FNA21, G, K1, K3, K4, RAB, S, SE1, Tn, Va, W, WH3, Turner & Dawson (1980)

Links to other floras: = Tetragonotheca helianthoides - FNA21

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Heliophily ⓘ: 7

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image of plant© Scott Ward | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Alan Cressler: Tetragonotheca helianthoides, Kathy Stiles Freeland Bibb County Glades Preserve, The Nature Conservancy, Bibb County, Alabama 1 by Alan Cressler source | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image of plant© Alan Cressler: Tetragonotheca helianthoides, along River Road, Johnson County, Georgia 2 by Alan Cressler source | Original Image ⭷
image of plant© Floyd A. Griffith | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect-ascending, tufted perennial of sandhills, sandy woodlands such as longleaf pinelands, open hammocks and roadsides.

Stems: Stems 1-a few, sparsely branched, hairy.

Leaves: Leaves opposite, sessile with winged bases (lower leaves may be petiolate), elliptic to oval or diamond-shaped, 4-7 in. long, toothed.

Inforescence:

Flowers: Composite flowers (heads) solitary at stem tips; each head consisting of 6-10 well-separated yellow ray florets encircling a flattish central disk of darker yellow, tubular florets. Each head rests on 4 large, oval bracts that collectively suggest a square.

Fruits:

Comments:

Height: 1-3 ft.

plant sale text:

bloom table text:

description: Erect-ascending, tufted perennial of sandhills, sandy woodlands such as longleaf pinelands, open hammocks and roadsides.

stems: Stems 1-a few, sparsely branched, hairy.

leaves: Leaves opposite, sessile with winged bases (lower leaves may be petiolate), elliptic to oval or diamond-shaped, 4-7 in. long, toothed.

inflorescence:

flowers: Composite flowers (heads) solitary at stem tips; each head consisting of 6-10 well-separated yellow ray florets encircling a flattish central disk of darker yellow, tubular florets. Each head rests on 4 large, oval bracts that collectively suggest a square.

fruits:

comments:

cultural notes:

germination code:

native range:

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