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Coreopsislinifolia Nuttall. Savanna Coreopsis. Phen: Early Jul-late Oct. Hab: Pine savannas, sandhill seeps, sandhill-pocosin ecotones. Dist: Se. VA south to ne. and Panhandle FL, west to e. TX.
ID notes:Basal rosettes of this species are abundant in wet savannas and can be distinguished readily by the distinctive leaves: very long-petiolate, about 1 cm across, the pinnate venation very neat (the main lateral veins straight and parallel to the other laterals on the same side of the leaf), with small dark dots when backlit, and very thick (ca. 1 mm) and stiff in texture.
Origin/Endemic status: Endemic
Taxonomy Comments: The proper taxonomic treatment of this taxon and its relatives remains unclear. Smith (1976) interpreted C. linifolia to range from se. VA south and west along the Coastal Plain to e. TX (with a few inland disjunctions) and to consist of two chromosome races, a diploid Gulf Coast race (w. FL to se. TX) and a tetraploid Atlantic Coast race (s. GA to se. VA), "not differing sufficiently morphologically to justify nomenclatural recognition." Fernald, however, named C. oniscicarpa (the tetraploid) based on morphologic characters. Given the existence of morphologic characters, the failure of Smith's attempted hybridizations of the two "races," his speculation that the tetraploid could be an allotetraploid (though likely an autotetraploid), and the allopatric ranges of the two races, specific recognition is plausible. Further study is needed. Cronquist (in C, G, SE) does not recognize C. oniscicarpa as distinct from C. linifolia, and reduces C. linifolia (sensu lato) to a variety of C. gladiata, also including C. falcata in the typic variety of C. gladiata. The abundant morphologic, phenologic, and ecologic differences between C. gladiata, C. linifolia, and C. falcata render such an approach undesirable.
Synonymy ⓘ: = GW2, K1, K3, K4, Tx, Va, WH3, Sherff & Alexander (1955), Smith (1976), Sorrie, LeBlond, & Weakley (2013); = Coreopsisangustifolia Aiton – RAB, possibly misapplied; = Coreopsisgladiata Walter var. linifolia (Nutt.) Cronquist – C, G, SE1; < Coreopsisgladiata Walter – FNA21; > Coreopsisoniscicarpa Fernald var. oniscicarpa – F; > Coreopsisoniscicarpa Fernald var. simulans Fernald – F
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Horticultural Information
Intro:Erect to leaning perennial of pine savannas, sandhill seeps and sandhill-pocosin ecotones.
Stems:Stems ribbed, unbranched, smooth.
Leaves:Leaves basal and mostly opposite on the stem, petiolate (basal ones only), oblong-lance-shaped, to 7 in. long, stiff and thick, with minute dark dots beneath; reduced and bract-like above.
Inforescence:
Flowers:Composite flowers (heads) solitary at the end of the stem, to 2 in. wide, consisting of 5-20 long, yellow ray florets with toothed tips encircling a dense center disk of tiny, dark red, 4-lobed tubular florets; several series of small, green, pointed bracts surround the base of the head, these sometimes streaked with red.
Fruits:
Comments:
Height:1 1/2-3 1/2 ft.
plant sale text:Savanna coreopsis is a delicate perennial that is found in moist ditches and wet flatwoods in the coastal plain region of North Carolina. It has slender, leafless stems and cheerful yellow flowers that appear in the late summer and into the fall. The flowers are reminiscent of some Rudbeckia species but are distinguished by the 3 lobes at the ends of the individual flower petals. This species prefers moist soils and grows well when planted among native grasses and asters for support.
bloom table text:
description:Erect to leaning perennial of pine savannas, sandhill seeps and sandhill-pocosin ecotones.
stems:Stems ribbed, unbranched, smooth.
leaves:Leaves basal and mostly opposite on the stem, petiolate (basal ones only), oblong-lance-shaped, to 7 in. long, stiff and thick, with minute dark dots beneath; reduced and bract-like above.
inflorescence:
flowers:Composite flowers (heads) solitary at the end of the stem, to 2 in. wide, consisting of 5-20 long, yellow ray florets with toothed tips encircling a dense center disk of tiny, dark red, 4-lobed tubular florets; several series of small, green, pointed bracts surround the base of the head, these sometimes streaked with red.
