Coreopsis grandiflora Hogg ex Sweet var. grandiflora. Common name: Large-flowered Coreopsis. Phenology: Late May-late Jun. Habitat: In thin soils of rock outcrops, especially granitic flatrock and granite domes. Distribution: Var. grandiflora ranges from c. GA and w. SC west to e. TX and e. OK, very scattered in distribution; it differs from var. harveyana in having the leaf divisions 2-6 mm wide (vs. 0.5-2 mm wide).
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, F, Il, Smith (1976); < Coreopsis grandiflora Hogg ex Sweet — Fl7, FNA21, G, Mi, Mo2, Ok, RAB, S, Tx, W, WH3, Tadesse & Crawford (2023); < Coreopsis grandiflora Hogg ex Sweet var. grandiflora — C, SE1; > Coreopsis grandiflora Hogg ex Sweet var. grandiflora — Sherff & Alexander (1955); > Coreopsis grandiflora Hogg ex Sweet var. pilosa Sherff — Sherff & Alexander (1955). Basionym: Coreopsis grandiflora Hogg ex Sweet 1826
Links to other floras: < Coreopsis grandiflora - FNA21
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Heliophily ⓘ: 9
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© jim_keesling, some rights reserved (CC BY-NC), uploaded by jim_keesling source CC-BY-NC, permission granted to NCBG | Original Image ⭷
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© Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© jim_keesling, some rights reserved (CC BY-NC), uploaded by jim_keesling source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© jim_keesling, some rights reserved (CC BY-NC), uploaded by jim_keesling source CC-BY-NC, permission granted to NCBG | Original Image ⭷Feedback
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Horticultural Information
Intro: Erect perennial of thin soils on rock outcrops, especially granitic flatrocks.
Stems: Stems unbranched, smooth.
Leaves: Leaves opposite, petiolate, the lower ones lance-shaped and undivided, the middle and upper ones to 3 in. long and pinnately divided into several narrow segments, the center one being broadest.
Inforescence:
Flowers: Composite flowers (heads) solitary on naked, terminal stalks; heads 1 1/2-2 in. wide, consisting of 8 yellow ray florets with toothed tips encircling a dense center of yellow, 5-lobed disk florets; the base of the head is surrounded by 2 series of bracts, the inner straw-colored and the outer green.
Fruits:
Comments: A more commonly encountered variety of C. grandiflora (roadsides and other open, disturbed habitats) is var. harveyana; its leaf segments are narrower (less than 1/8 in.) than those of var. grandiflora (up to 1/4 in.). C. grandiflora var. saxicola ?????
Height: 2-3 ft.
plant sale text:
bloom table text:
description: Erect perennial of thin soils on rock outcrops, especially granitic flatrocks.
stems: Stems unbranched, smooth.
leaves: Leaves opposite, petiolate, the lower ones lance-shaped and undivided, the middle and upper ones to 3 in. long and pinnately divided into several narrow segments, the center one being broadest.
inflorescence:
flowers: Composite flowers (heads) solitary on naked, terminal stalks; heads 1 1/2-2 in. wide, consisting of 8 yellow ray florets with toothed tips encircling a dense center of yellow, 5-lobed disk florets; the base of the head is surrounded by 2 series of bracts, the inner straw-colored and the outer green.
fruits:
comments: A more commonly encountered variety of C. grandiflora (roadsides and other open, disturbed habitats) is var. harveyana; its leaf segments are narrower (less than 1/8 in.) than those of var. grandiflora (up to 1/4 in.). C. grandiflora var. saxicola ?????
cultural notes:
germination code:
native range:
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