Plant Index


 
 
 
 

Helianthus divaricatus

Helianthus divaricatus L.

woodland sunflower, spreading sunflower

Synonym(s): Helianthus divaricatus var. angustifolius
Helianthus divaricatus (Woodland Sunflower)
Image ID: 29344
Image by: Oglesby, Emily
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: HEDI2
SCIENTIFIC NAME: Helianthus divaricatus
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2019-09-18

GENUS INDEX

GENUS CODE: HELIA3
GENUS SCIENTIFIC: Helianthus
GENUS AUTHORITY: L.
GENUS COMMON: Sunflower
GENUS SUMMARY: A genus of about 50 species, herbs, of North America.
GENUS IDENTIFICATION:
GENUS REFERENCES: Schilling in FNA (2006c); Heiser et al. (1969); Cronquist (1980)=SE; Schilling et al. (1998). Key adapted from FNA, SE, RAB, and Heiser et al. (1969).

FAMILY INDEX

FAMILY CODE: ASTERA
FAMILY SCIENTIFIC: Asteraceae
FAMILY AUTHORITY: Dumortier 1822 or COMPOSITAE Giseke 1792
FAMILY COMMON: Aster Family
FAMILY SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
FAMILY REFERENCE: Cronquist (1980)=SE throughout family treatment.

NCBG DESCRIPTIVES

INTRO: Erect, rhizomatous perennial of moist to dry woodlands, forests, and forest edges and clearings.
STEMS: Stems simple or branched at summit, mostly smooth, often with a whitish coating.
LEAVES: Leaves opposite, spreading horizontally, sessile, lance-shaped, 2-6 in. long, with 3 veins diverging from the base, entire or toothed, rough above or on both surfaces and lower surface soft-hairy.
INFLORESCENCE:
FLOWERS: Composite flowers (heads) in terminal clusters, 1 1/2-3 in. wide, consisting of 8-15 yellow ray florets encircling a center disk of darker yellow tubular florets. Overlapping, upwardly curving bracts surround the base of each head.
FRUITS: Fruit a dark brown to blackish, flattened, oval achene.
COMMENTS:
HEIGHT: 2-7 ft.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT: Opposite
LEAF COMPLEXITY: Simple
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY: Mixed
BLOOM TIME: Jun-Aug
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x x

BLOOM COLOR: Yellow
White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable
x

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Dry forests, Moist forests, Woods margins
NATIVE RANGE: eastern North America

HORTICULTURAL
Plant Sale Text: In late summer, Woodland Sunflower produces two-inch flowers borne on upright slender stems. Yellow rays surround a slightly darker yellow central disk. Its handsome green leaves have a sandpaper-like texture. This species is found in open rocky woods and along roadsides. It is quite drought-tolerant, once the plant’s root system has gotten established. Over time, this species spreads with creeping rhizomes to form colonies. The seeds of this handsome native sunflower are a great food source for birds.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE: 3
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE:
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly, Bird Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
276 2011-0132 2011-06-16 281 View
3986 1992-0142 View
5494 1995-0617 View
6124 1995-1255 View
9432 2021-0094 2021-06-30 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
281 HORT 2009-01-01 NCBG staff View
1825 HORT 2006-10-01 Bryan View
1857 HORT Bryan View
2164 NPMD 2019-08-13 Touloupas View
2168 NPMD 2019-08-16 Touloupas View
2173 NPMD 2019-08-19 Touloupas View
2179 NPMD 2019-08-20 Touloupas View
2186 NPMD 2019-08-28 Touloupas View
2197 NPMD 2019-09-04 Touloupas View
2210 NPMD 2019-09-09 Touloupas View
2234 NPMD 2019-09-16 Touloupas View
2541 NPMD 2021-10-13 Pil View
2542 NPMD 2021-10-13 Boyette View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
666 276 21 NCBG staff 2011-04-08 View
6314 3986 200 NCBG staff 1993-03-01 View
8008 5494 204 NCBG staff 1993-01-01 View
8779 6124 2 NCBG staff 0000-00-00 View
12746 9432 96 Briggs 2021-05-25 View

USDA PLANTS DATABASE

USDA Symbol: HEDI2
USDA Common Name: Woodland Sunflower
Native Status: L48 (N), CAN (N)
Distribution: USA (AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KY, LA, MA, MD, ME, MI, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, VA, VT, WI, WV), CAN (ON, QC)
Duration: Perennial
Growth Habit: Forb/herb

WEAKLEY FLORA

SCIENTIFIC NAME: Helianthus divaricatus
COMMON NAME: Spreading Sunflower
SYNONYMY: [= C, FNA, G, Il, K, Pa, RAB, S, SE, Va, W, WH3, WV; > H. divaricatus var. angustifolius Kuntze - F; > H. divaricatus var. divaricatus - F]
PHENOLOGY: Jun-Aug.
HABITAT: Mesic to dry woodlands and forests, forest edges.
COMMENTS: ME, QC, ON, and IA south to Panhandle FL, LA, and OK.
RANGE MAP: Helianthus divaricatus.png

Key to Map Symbols
ABOUT FAMILY (Weakley Flora)
Asteraceae Dumortier 1822 or COMPOSITAE Giseke 1792 (Aster Family)
SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
REFERENCE: Cronquist (1980)=SE throughout family treatment.
ABOUT GENUS (Weakley Flora)
Helianthus L. (Sunflower)
SUMMARY: A genus of about 50 species, herbs, of North America.
REFERENCE: Schilling in FNA (2006c); Heiser et al. (1969); Cronquist (1980)=SE; Schilling et al. (1998). Key adapted from FNA, SE, RAB, and Heiser et al. (1969).

HERBARIUM RESOURCES

SERNEC: Find Helianthus divaricatus in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Helianthus divaricatus in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Helianthus divaricatus in USDA Plants
NPIN: Find Helianthus divaricatus in NPIN Database
FNA: Find Helianthus divaricatus in the Flora of North America (if available)
Google: Search Google for Helianthus divaricatus

NCBG IMAGE RECORDS

ID IMAGE1: 29344
ID IMAGE2: 0
ID IMAGE3: 29344

From the Image Gallery


Image ID: 7854

Image ID: 7855

Image ID: 14772

Image ID: 14773

Image ID: 14774

Image ID: 29345

Image ID: 29346

Image ID: 29347

Image ID: 29348

Image ID: 29349

Image ID: 29350
12 photo(s) available in the Image Gallery

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