Sphagneticola trilobata |
Sphagneticola |
|
---|---|---|
Bay Biscayne creeping-oxeye |
creeping-oxeye |
|
Habit | Perennials, mostly 30–200 cm. | |
Stems | prostrate, branched ± throughout (rooting at nodes, usually ± succulent). |
|
Leaves | blades 5–18 × 1–5+ cm. |
cauline; opposite; sessile or petiolate; blades (usually 3-nerved) mostly trullate to lanceolate, often obscurely 3-lobed, bases ± cuneate, margins entire or toothed, faces usually scabrous. |
Involucres | obconic, 6–12 mm diam. |
|
Receptacles | convex to conic, paleate (paleae conduplicate, scarious, acute). |
|
Ray florets | 4–10+, pistillate, fertile; corollas yellow to orange. |
|
Ray laminae | 6–15 mm. |
|
Disc florets/ |
3.5–6 mm. |
30–60+, bisexual, fertile; corollas yellow to orange, tubes shorter than campanulate throats, lobes 5, lance-triangular. |
Phyllaries | persistent, 12–15 in 2–3 series (outer larger, more foliaceous than inner). |
|
Heads | radiate, borne singly. |
|
Cypselae | 3–5 mm. |
strongly biconvex to plumply 3–4-angled (epidermes usually thick, corky, smooth or tuberculate, apices rostrate, each bearing central neck or boss, rostra obscure in mature fruits); pappi 0, or persistent, coroniform (erose or fimbrillate to lacerate, 0.1–0.6 mm). |
x | = 15. |
|
2n | = ca. 40, ca. 50–54, 50–58, 56, ca. 56, 57, and 60. |
|
Sphagneticola trilobata |
Sphagneticola |
|
Phenology | Flowering nearly year round. | |
Habitat | Ruderal, wet places | |
Elevation | 0–10 m (0–0 ft) | |
Distribution |
FL; Mexico; Central America; South America; West Indies; Bermuda; Indian Ocean Islands; Pacific Islands; Australia [Introduced in North America; probably introduced in Asia]
|
Mexico; Central America; South America; West Indies; Bermuda; Asia; Indian Ocean Islands; Pacific Islands; Australia [Introduced in North America] |
Discussion | Sphagneticola trilobata is probably native to subtropics and tropics of the New World and probably introduced in Old World. It is increasingly cultivated and is to be expected as escaped or persisting in warm to hot, sandy spots anywhere in the flora area. Report of it from Louisiana has not been confirmed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 4 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 126. | FNA vol. 21, p. 126. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Sphagneticola | Asteraceae > tribe Heliantheae > subtribe Ecliptinae |
Subordinate taxa | ||
Synonyms | Silphium trilobatum, Wedelia trilobata | |
Name authority | (Linnaeus) Pruski: Mem. New York Bot. Gard. 87: 114. (1996) | O. Hoffmann: Notizbl. Königl. Bot. Gart. Berlin 3: 36. (1900) |
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