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Florida Yellowtops

Flaveria floridana Johnston

Comments

provided by eFloras
Flaveria floridana is known only from the lower Gulf coast of Florida; it is especially prevalent in the Tampa Bay area. The relatively long calyculus bractlets and modified peduncular leaves that extend beyond the heads distinguish it from F. linearis, the other perennial species in Florida. The closest relative of F. floridana is probably the similar F. brownii of the Texas Gulf coast.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 248 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

provided by eFloras
Perennials (or annuals), 50–120 cm (usually glabrous, sometimes sparsely pubescent distally on peduncles). Stems erect. Leaves sessile; blades usually linear or lanceolate, rarely subelliptic, 50–140 × 4–17 mm, bases ± connate, margins entire, minutely serrate, or spinulose-serrate. Heads 20–100+, in dense, scorpioid-cymiform arrays. Calyculi of 1–3 linear-lanceolate bractlets 4–6 mm (often surpassing involucres). Involucres suburceolate, oblong-angular, 3.6–4.5 mm. Phyllaries 5–6(–9), oblong or ovate-orbiculate. Ray florets 0 or 1; laminae yellow, ovate-spatulate, 2–2.8 × 1.5–2 mm. Disc florets 9–14; corolla tubes 0.8–1 mm, throats funnelform, 1.3–1.5 mm. Cypselae oblong-oblanceolate or linear, 1.2–1.8 mm; pappi 0. 2n = 36.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 248 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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visit source
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eFloras

Comprehensive Description

provided by North American Flora
Flaveria floridana T. R. Johnston, Proc. Am. Acad 39: 291. 1903.
A stout dichotomously branched annual herb; stem striate, glabrous, 5-10 dm. high; leaves linear to lance-linear, rarely denticulate, 2.5-8 cm. long, 3-12 mm. wide, slightly connate; inflorescence irregular; glomerules compact, subtended by a whorl of leaves; heads 10-13-flowered; involucral bracts subequal, 4 mm. long; ligule oval, 2 mm. long; disk-corollas 2.5 mm. long, glabrous; tube shorter than the funnelform throat; achenes 1.5 mm. long.
Type locality: Sanibel Island, Florida. Distribution: Florida.
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bibliographic citation
Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
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Flaveria floridana

provided by wikipedia EN

Flaveria floridana, Florida yellowtops,[2] is a North American plant species of yellowtops within the sunflower family. It has been found only along the Gulf Coast of Florida between Clearwater and Marco Island, mostly in the Tampa Bay region.[3][4]

Flaveria floridana is an perennial herb up to 120 cm (3.9 ft) tall. Leaves are long and narrow, up to 14 cm (5.5 in) long. One plant can sometimes produce as many as 100 flower heads in a tightly packed array. Each head contains 9-14 yellow disc flowers. Sometimes it produces a single yellow ray flower as well.[2][4]

References

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Flaveria floridana: Brief Summary

provided by wikipedia EN

Flaveria floridana, Florida yellowtops, is a North American plant species of yellowtops within the sunflower family. It has been found only along the Gulf Coast of Florida between Clearwater and Marco Island, mostly in the Tampa Bay region.

Flaveria floridana is an perennial herb up to 120 cm (3.9 ft) tall. Leaves are long and narrow, up to 14 cm (5.5 in) long. One plant can sometimes produce as many as 100 flower heads in a tightly packed array. Each head contains 9-14 yellow disc flowers. Sometimes it produces a single yellow ray flower as well.

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