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Asteraceae
Helenium

not marked as a favorite taxon Helenium flexuosum Rafinesque. Common name: Southern Sneezeweed. Phenology: May-Aug. Habitat: Moist pastures, moist forests, riverbanks, wet pine rocklands (in s. FL). Distribution: S. ME west to MN, south to c. peninsular FL and TX; disjunct in s. FL.

Glossary (beta!)

Origin/Endemic status: Native

Taxonomy Comments: Rayless plants of s. FL likely warrant taxonomic recognition.

Synonymy ⓘ: = C, Fl7, FNA21, G, GrPl, GW2, Il, K4, Mi, NE, NY, Oh3, Pa, RAB, SE1, Tn, Va, W, WH3, WV, Bierner (1972); > Helenium floridanum Fernald — Fernald (1943); > Helenium godfreyi Fernald — Fernald (1943); > Helenium nudiflorum Nutt. — F, S, Tat, Fernald (1943); > Helenium polyphyllum Small — S. Basionym: Helenium flexuosum Raf. 1836 [1838]

Links to other floras: = Helenium flexuosum - FNA21

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FAC
  • Great Plains: FACW
  • Midwest: FAC
  • Northcentral & Northeast: FAC

Heliophily ⓘ: 8

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image #1 of Helenium flexuosum© Gary P. Fleming | Original Image ⭷
image #2 of Helenium flexuosum© Keith Bradley | Original Image ⭷
image #3 of Helenium flexuosum© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #4 of Helenium flexuosum© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #5 of Helenium flexuosum© Gary P. Fleming | Original Image ⭷
image #6 of Helenium flexuosum© Scott Ward | Original Image ⭷
image #7 of Helenium flexuosum© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #8 of Helenium flexuosum© Erik Danielson source | Original Image ⭷
image #9 of Helenium flexuosum© Keith Bradley | Original Image ⭷
image #10 of Helenium flexuosum© Alan Cressler: Helenium flexuosum, Union County, Georgia 1 by Alan Cressler source | Original Image ⭷
image #11 of Helenium flexuosum© Grant Morrow Parkins | Original Image ⭷
image #12 of Helenium flexuosum© Joe MDO, some rights reserved (CC BY-NC), uploaded by Joe MDO source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #13 of Helenium flexuosum© Joe MDO, some rights reserved (CC BY-NC), uploaded by Joe MDO source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #14 of Helenium flexuosum© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #15 of Helenium flexuosum© Scott Ward | Original Image ⭷
image #16 of Helenium flexuosum© Scott Ward | Original Image ⭷
image #17 of Helenium flexuosum© Scott Ward | Original Image ⭷
image #18 of Helenium flexuosum© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect perennial of moist forests, moist pastures and river banks.

Stems: Stems wing-angled, with stiffly ascending, leafy branches above; rough-hairy.

Leaves: Leaves alternate, sessile (basal leaves petiolate), narrowly lance-shaped to oval, to 6 in. long (reduced upward), wavy-margined, smooth or velvety-furry.

Inforescence:

Flowers: Composite flowers (heads) at ends of branches; 1 1/2-2 in. wide; consisting of 8-15 yellow, drooping, narrowly wedge-shaped and 3-toothed ray florets encircling a maroon-brown, ball-shaped central disk (about 1/2 in. tall) composed of many tubular florets.

Fruits:

Comments:

Height: 1-3 ft.

plant sale text: This handsome SE native produces multibranched stems of bright yellow flowers, each with a prominent dark purplish center. While this plant does not cause hay fever symptoms, it is also known as sneezeweed because it blooms at the same time as ragweed. Often found growing around the edges of ponds and on streambanks, it also does well in average soil conditions. This perennial is deer resistant and makes a wonderful cut flower. This species is being studied for its anticancer properties.

bloom table text:

description: Erect perennial of moist forests, moist pastures and river banks.

stems: Stems wing-angled, with stiffly ascending, leafy branches above; rough-hairy.

leaves: Leaves alternate, sessile (basal leaves petiolate), narrowly lance-shaped to oval, to 6 in. long (reduced upward), wavy-margined, smooth or velvety-furry.

inflorescence:

flowers: Composite flowers (heads) at ends of branches; 1 1/2-2 in. wide; consisting of 8-15 yellow, drooping, narrowly wedge-shaped and 3-toothed ray florets encircling a maroon-brown, ball-shaped central disk (about 1/2 in. tall) composed of many tubular florets.

fruits:

comments:

cultural notes:

germination code:

native range: eastern United States



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