命名來源
二裂果組 Sect. Diplophragma Wight et Arn.
來源：中國植物志第71(1)卷 || 茜草科 RUBIACEAE || 耳草屬 Hedyotis Linn. || 二裂果組 Sect. Diplophragma Wight et Arn.
組2. 二裂果組 Sect. Diplophragma Wight et Arn. Prodr. 406. 1834.
形態特徵
二裂果組植物，蒴果室間開裂為2果爿，每果爿含1-4粒（罕有多於此數）種子，果爿腹部直裂，頂部不隆起。直立或平臥灌木和草本；托葉各式。
下級分類
| 金草Hedyotis acutanula Champ. ex Benth. 清遠耳草Hedyotis assimilis Tutch. 大帽山耳草Hedyotis bodinieri Levl. 大苞耳草Hedyotis bracteosa Hance 廣州耳草Hedyotis cantoniensis How ex Ko 敗醬耳草Hedyotis capituligera Hance 中華耳草Hedyotis cathayana Ko 劍葉耳草Hedyotis caudatifolia Merr. et Metcalf 大眾耳草Hedyotis communis Ko 擬金草Hedyotis consanguinea Hance 鼎湖耳草Hedyotis effusa Hance 長花軸耳草Hedyotis exserta Merr. 海南耳草Hedyotis hainanensis (Chun) Ko 粵港耳草Hedyotis loganioides Benth. | 上思耳草Hedyotis longiexserta Merr. et Metcalf 長瓣耳草Hedyotis longipetala Merr. 疏花耳草Hedyotis matthewii Dunn 粗毛耳草Hedyotis mellii Tutch. 粉毛耳草Hedyotis minutopuberula Merr. et Metcalf 卵葉耳草Hedyotis ovata Thunb. ex Maxim. 艷麗耳草Hedyotis pulcherrima Dunn 細梗耳草Hedyotis tenuipes Hemsl. 頂花耳草Hedyotis terminaliflora Merr. et Chun 方莖耳草Hedyotis tetrangularis (Korth.) Walp. 長節耳草Hedyotis uncinella Hook. et Arn. 香港耳草Hedyotis vachellii Hook. et Arn. 黃葉耳草Hedyotis xanthochroa Hance 陽春耳草Hedyotis yangchunensis Ko et Zhang |
相關類群
隆冠果組 Sect. Dimetia
真耳草組 Sect. Euoldenlandia
角果組 Sect. Gonotheca
耳草組 Sect. Hedyotis
