三角叶西番莲（学名：Passiflora suberosa）又称为栓皮西番莲、黑子仔、爬山藤、姬番果，多年生蔓性草本。原产于南美巴西，1907年由日本人引进**，现在已遍布全岛平地至低山地区。老茎外包着黄白色的木栓层，于是又名「栓皮西番莲」。

单叶，互生，叶具柄，具三主脉，柄长1~2.5公分，近基部具一对腺点；叶片长3~6公分，宽4~7公分，宽卵形或阔心形，具3裂，裂片呈三角形，叶缘具刚毛，上下表面光滑无毛；托叶尖形或尖锥状。

花通常成对存在，腋生，花梗长1~2公分，具小苞片；花萼5片，长0.6~0.8公分，长椭圆状线形；不具花冠；外轮丝状副冠反卷，长0.2~0.3公分，绿色，近先端为黄色；雄蕊5枚，基部合生成筒，包围花柱，上部离生；雌蕊柄长约0.4公分；花柱3叉，细长，柱头头状。花萼呈长椭圆状线形，外轮丝状副冠反卷。

Passiflora suberosa is a species of passionflower that is native to the Americas. Its range stretches from Florida and the Lower Rio Grande Valley of Texas in the United States south through Mexico, Central America, and the Caribbean to South America. It is commonly known as corkystem passionflower due to the corkiness of older stems. The fruit is not hardy and transitions from green to indigo, purple and, lastly, black as it ripens. This species is a host plant for the caterpillars of the Gulf fritillary (Agraulis vanillae), Julia heliconian (Dryas iulia), Mexican silverspot (Dione moneta) and zebra heliconian (Heliconius charithonia). It is a larval host plant for the glasswing butterfly (Acraea andromacha) in Australia.