木通科科

本科植物主要为木质藤本，也有直立的灌木，叶互生，主要为掌状复叶，也有羽状复叶，有托叶；花辐射对称，单性，花瓣6，雄蕊6，果实为肉质的蓇葖果或浆果，沿腹缝开裂或不裂。

木通科的木通(古称三叶木通)、毛茛科的川木通和马兜铃科的关木通都统称为木通。关木通，而据考证，“此木通非彼木通”。如今市场常见、临床常用的关木通与《神农本草经》等古籍中所记载的木通虽同名为“木通”，但并非一物。关木通属马兜铃科，其所含马兜铃酸经研究证明可能引起人体肾脏损害，属“有毒”类中药。而《神农本草经》中所记载的木通为木通科的木通，其性无毒。

下属分类

本科包括以下属：

木通属 Akebia Decne.

长萼木通属 Archakebia C. Y. Wu, T.C.Chen & H.N.Qin（有的分类学家将其列入八月瓜属）

避役藤属 Boquila Decne., 1837

猫儿屎属 Decaisnea Hook.f. & Thomson

八月瓜属 Holboellia Wall.

Kajanthus M.M.Mendes, G.W.Grimm, J.Pais & E.M.Friis, 2014

Kajanthus lusitanicus

酒杯藤属 Lardizabala Ruiz & Pav., 1794

大血藤属 Sargentodoxa Rehder & E. H. Wilson（有的分类学家将其单独分为一科 Sargentodoxaceae）

串果藤属 Sinofranchetia (Diels) Hemsl.

野木瓜属 Stauntonia DC.

Lardizabalaceae is a family of flowering plants.

The family has been universally recognized by taxonomists, including the APG II system (2003; unchanged from the APG system of 1998), which places it in the order Ranunculales, in the clade eudicots.

The family consist of 7 genera with about 40 known species of woody plants. All are lianas, save Decaisnea, which are pachycaul shrubs. The leaves are alternate, and compound (usually palmate), with pulvinate leaflets. The flowers are often in drooping racemes.

They are found in eastern Asia, from the Himalayas to Japan, with the exception of the genera Lardizabala and Boquila, both native to southern South America (Chile, and Boquila also in adjacent western Argentina). The extinct genus Kajanthus is known from the Early Cretaceous of Portugal.