Sphagneticola trilobata (L.C. Rich.) Pruski
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EOL Text
Leaf blades 5–18 × 1–5+ cm. Ray laminae 6–15 mm. Disc corollas 3.5–6 mm. Cypselae 3–5 mm. 2n = ca. 40, ca. 50–54, 50–58, 56, ca. 56, 57, and 60.
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Comments: Sometimes treated as Wedelia trilobata; Kartesz (1999) treats as Sphagneticola trilobata.
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Sphagneticola trilobata (L.) Pruski
BASÓNIMO: Silphium trilobatum L.
SINÓNIMO: Wedelia trilobata (L.) Hitchc.
Hierba rastrera o decumbente, a veces escandente, que alcanza 2 m de largo. Tallos obtusamente cuadrangulares o cilíndricos, puberulentos. Hojas opuestas; láminas 3-10 × 2.5-6 cm, oblanceoladas o rómbicas, usualmente 3-lobadas, cartáceas, el ápice obtuso o agudo, la base obtusa o atenuada, los márgenes aserrados; haz pubescente o puberulento; envés pubescente o puberulento, con puntos glandulares, con la nervación prominente y pubescente; pecíolos 0-5 mm de largo. Capítulos con numerosas flores, solitarios, terminales; pedúnculos 3.5-14 cm de largo, puberulentos; involucro turbinado; filarios en una serie, 12-14, desiguales, 10-14 cm de largo, oblanceolados u oblongos, verdes; corolas del disco tubulares, amarillas, 4.5-5.5 mm de largo, papilosas en la superficie externa de los lóbulos; corolas del margen liguladas, las lígulas ca. 15 mm de largo, sub-elípticas, trilobadas en el ápice. Aquenios piriformes, ca. 2 mm de largo; pappus formando una corona, ca. 1 mm de alto.
Fenología: Florece y fructifica todo el año.
Estatus: Ornamental, cultivada y naturalizada, muy común.
Especimenes Estudiados: Acevedo-Rdgz., P. 923; 2894.
Sphagneticola trilobata (L.) Pruski in Acev.-Rodr., Mem. New York Bot. Gard. 78: 114. 1996.
Basionym: Silphium trilobatum L.
Synonym: Wedelia trilobata (L.) Hitchc.
Creeping or decumbent herb, sometimes scandent, attaining 2 m in length. Stems obtusely quadrangular or cylindrical, puberulous. Leaves opposite; blades 3-10 × 2.5-6 cm, oblanceolate or rhombic, usually 3-lobed, chartaceous, the apex obtuse or acute, the base obtuse or attenuate, the margins serrate; upper surface pubescent or puberulous; lower surface pubescent or puberulous, with glandular dots, with prominent venation and pubescent; petioles 0-5 mm long. Capitula of numerous flowers, solitary, terminal; peduncles 3.5-14 cm long, puberulous; involucre turbinate; phyllaries in one series, 12-14, unequal, 10-14 cm long, oblanceolate or oblong, green; disc corollas tubular, yellow, 4.5-5.5 mm long, papillose on the outer surface of the lobes; ray corollas ligulate, the ligules ca. 15 mm long, subelliptical, trilobed at the apex. Achenes pyriform, ca. 2 mm long; pappus forming a corona, ca. 1 mm high.
Phenology: Flowering and fruiting throughout the year.
Status: Ornamental, cultivated and naturalized, very common.
Selected Specimens Examined: Acevedo-Rdgz., P. 923; 2894.
Habit: Herb
Silphium trilobatum Linnaeus, Syst. Nat. ed. 10, 2: 1233. 1759 (as trilobatu); Wedelia trilobata (Linnaeus) Hitchcock
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Local
Contains acetylenes and derivatives of kaurenic acid.
The following is a representative barcode sequence, the centroid of all available sequences for this species.
Perennial herb to 30 cm, but usually much shorter. Stems prostrate, creeping and rooting at the nodes. Leaves dark green, shiny, entire, serrate to lobed. Capitula 3 cm in diameter, yellow to orange-yellow, solitary on long peduncles. Achenes brown.