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Nan Flora

Nan

Nan (Thai: น่าน, pronounced [nâːn]; Northern Thai: ᨶᩣ᩠᩵ᨶ) is one of Thailand's seventy-six provinces (changwat), and lies in upper northern Thailand. Neighboring provinces are (from south clockwise): Uttaradit, Phrae, and Phayao. To the north and east it borders Sainyabuli of Laos.

Nan was inducted into the UNESCO Creative Cities Network for the City of Crafts and Folk Arts in 2025.
The province is in the remote Nan River valley, surrounded by forested mountains, the Phlueng Range in the western part and the Luang Prabang Range in the east.The highest mountain is the 2,079 meter high Phu Khe in Bo Kluea District, northeast of the city of Nan towards the border with Laos.The total forest area is 7,436 km(2,871 sq mi) or 61.3 percent of provincial area


National parks

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There are ten national parks in region 13 (Phrae), of which seven national parks are in Nan province. (Visitors in fiscal year 2024)

Doi Phu Kha National Park1,704 km2(658 sq mi)  (28,945)
Si Nan National Park1,024 km2(395 sq mi)  (38,495)
Mae Charim National Park   432 km2(167 sq mi)    (6,251)
Nanthaburi National Park   427 km2(165 sq mi)    (5,121)
Khun Sathan National Park   342 km2(132 sq mi)  (21,074)
Tham Sakoen National Park    250 km2(97 sq mi)    (5,224)
Khun Nan National Park   249 km2(96 sq mi)    (3,044)

Wildlife Sanctuaries

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The two wildlife sanctuaries in region 13 (Phrae) are not in Nan province.



Several notable Gesneriaceae species are found in Nan Province, Thailand, including Microchirita woodiiDidymocarpus formosus, and Aeschynanthus superbus


Gesneriaceae
Documented Gesneriaceae in Nan Province
  • Microchirita woodii: A rare species endemic and uniquely known to Nan Province, featuring large white corollas with a yellow ventral stripe and purple-brown spots. [1]
  • Didymocarpus formosus: Found growing on large shaded boulders near streams in montane forests within the Bo Kluea District, displaying deep blood-red pendulous flowers. 
  • Aeschynanthus superbus: An epiphytic pendulous shrub found in montane forests at elevations of 900–1,700 meters, carrying striking red flowers with dark lines. 
  • Microchirita thailandica: Discovered and recorded from limestone formations in Sakoen, Song Kwae District. 
  • Microchirita glandulosa C.Puglisi Nan, Song Kwaw, Sakoen, Khao Tham Plakang, 750 m, 3 September 
  • Paraboea glabrisepala B.L Buryt recorded from Tham Sakoen National Park 

  • Paraboea glabrisepala B.L Buryt


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    Provincial government

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    The province is divided into 15 districts (amphoe). These are further divided into 99 subdistricts (tambons) and 848 villages (mubans).

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