Appearance
''Thyrsanthella difformis'' is a deciduous low-growing woody twining vine in the dogbane family. Its leaves are opposite, entire, acuminate, and have variable shape. White to creamy yellow flowers, lacking a corona, corolla lobes 3–4 mm long, appear May to July. Reddish fruit are follicles 10–25 cm long, 1–2 mm in diameter that appear July through September.The variable leaf shape may make identification challenging in some cases, particularly if the narrow-leaf form is first encountered. Also, ''T. difformis'' may be confused with trumpet honeysuckle, alien japanese honeysuckle, or carolina jessamine. Distinguish ''T. difformis'' in the field from these plants by observing that only ''T. difformis'' exudes milky sap from broken stems or the central vein of torn leaves. It may be distinguished from the alien confederate jasmine, formerly in the same genus, by the unassuming pale yellow flowers of the native species contrasting to the showy white flowers of the introduced vine.Defense
One source reports that all parts of this plant are poisonous if ingested.References:
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