Commelina auriculata Blume

Herbs perennial. Stems erect, to 1.4 m, glabrous except sparsely hairy in a line distally. Leaf sheaths hirsute-ciliate at mouth, ciliate in a line along 1 side, with red lines; petiole short, ca. 3 mm; leaf blade elliptic or lanceolate, 2--4(--6) × 1--2 cm, adaxially sparsely scabrid, abaxially sometimes pubescent, or glabrous on both surfaces. Involucral bracts borne opposite leaves, 1(--3) aggregated at apex of each branch, with ca. 5 mm long stalk, funnelform, ca. 1 cm, glabrous or slightly white hispid, proximal margins connate, apex acute. Cincinnus 1; proximal branch undeveloped; distal branch with 2--5 small, bisexual flowers. Sepals 3--4 mm, membranous. Petals white, 2 longer ones ca. 7 mm, proximal one ca. 3 mm. Capsule globose, trigonous, ca. 4 mm, 3-valved, or 2-valved with posterior valve indehiscent. Seeds 1 per valve, gray-brown, ellipsoid, ca. 3.5 mm, smooth, flat on 1 surface. Fr. Nov.

Hill forests, streamsides in ravines. S Fujian (Zhangpu Xian), Guangdong, Taiwan [Indonesia; W Oceania].

Commelina auriculata là một loài thực vật có hoa trong họ Commelinaceae. Loài này được Blume mô tả khoa học đầu tiên năm 1827.

耳苞鸭跖草（学名：Commelina auriculata），又名蓬莱鸭跖草、耳叶鸭跖草，为鸭跖草科鸭跖草属的植物。分布在大洋洲、印度尼西亚、日本、台湾岛以及中国大陆的澳门、广东、福建等地，见于低海拔的丘陵丛林中或山沟水边，目前尚未由人工引种栽培。