Ancistrocladus tectorius is a species in the monogeneric family Ancistrocladaceae

Ancistrocladaceae

Ancistrocladaceae is the botanical name for a family of flowering plants. Such a family has been widely recognized by taxonomists.The APG II system, of 2003 , also recognizes this family and assigns it to the order Caryophyllales in the clade core eudicots...

found in China (Hainan

Hainan

Hainan is the smallest province of the People's Republic of China . Although the province comprises some two hundred islands scattered among three archipelagos off the southern coast, of its land mass is Hainan Island , from which the province takes its name...

) Cambodia

Cambodia

Cambodia , officially known as the Kingdom of Cambodia, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia...

, India (Andaman and Nicobar Islands), Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

, Laos

Laos

Laos Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ Sathalanalat Paxathipatai Paxaxon Lao, officially the Lao People's Democratic Republic, is a landlocked country in Southeast Asia, bordered by Burma and China to the northwest, Vietnam to the east, Cambodia to the south and Thailand to the west...

, Malaysia, Myanmar

Myanmar

Burma , officially the Republic of the Union of Myanmar , is a country in Southeast Asia. Burma is bordered by China on the northeast, Laos on the east, Thailand on the southeast, Bangladesh on the west, India on the northwest, the Bay of Bengal to the southwest, and the Andaman Sea on the south....

, Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

, Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

, and Vietnam

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

. The Vietnamese

Vietnamese language

Vietnamese is the national and official language of Vietnam. It is the mother tongue of 86% of Vietnam's population, and of about three million overseas Vietnamese. It is also spoken as a second language by many ethnic minorities of Vietnam...

 name is trung quan; , gou zhi teng.

These are palaeotropical

Palaeotropical

In biology, palaeotropical refers to geographical occurrence. For a distribution to be palaeotropical a taxon must occur in tropical regions on both continents in the Old World, i.e. in Africa and Asia....

 climbing twining plants, found in lowland to submontane, wet to seasonal evergreen tropical forests in valleys and on slopes from sea level to 1600 m. Good specimens can be found in Cat Tien National Park

Cat Tien National Park

Cát Tiên National Park is an important national park located in the south of Vietnam, approximately 150 km north of Ho Chi Minh City. It has an area of about 720 km² and protects one of the largest areas of lowland tropical rainforests left in Vietnam.-History:Cát Tiên national park was...

, Dong Nai Province, where leaves are used as roofing material by minority people.