Ranong Flora

 Ranong

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Ranong is one of Thailand's southern provinces (changwat), on the west coast along the Andaman Sea. It has the fewest inhabitants of all Thai provinces (making it the least populous of all the Thai provinces). Provinces neighboring Ranong are (clockwise) Chumphon, Surat Thani, and Phang Nga. To the west, it borders Kawthaung, Tanintharyi, Myanmar.

Ranong is on the Kra Isthmus, a narrow strip of land, only 44 kilometres (27 mi)wide,that connects Thailand with the Malay Peninsula, on the west of the Phuket mountain range. It has a long coast on the Andaman Sea. The province, together with Trat province, is known for being one of the wettest places in Thailand, the rainy season lasting for about eight months.

Ranong is the least populated province. The total forest area is 1,726 km²(666 sq mi) or 53.5 percent of provincial area, and 67 percent is mountainous.In former years the major industry was tin mining, but most mines are now exhausted. White clay mining (for the production of porcelain) and fishing are now the main industries, along with rubber and cashew nuts.

The Ngao Mangrove Forest Research Centre, also known as the Ranong Biosphere Reserve, in the north of Kapoe District, covering 189,431 rai (303.09 km²), was declared in 1997. It is the fourth biosphere reserve of Thailand, and the only one on the seacoast protecting mangrove forests.

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National parks

edThere are four national parks, along with seven other national parks, make up region 4 (Surat Thani) of Thailand's protected areas. (Visitors in fiscal year 2^[8]

edThere are four national parks, along with seven other national parks, make up region 4 (Surat Thani) of Thailand's protected areas. (Visitors in fiscal year 2024)^[8]

Namtok Ngao National Park	668 km2(258 sq mi)	(94,691)
Mu Ko Ranong National Park	357 km2(138 sq mi)	(1,716)
Laem Son National Park	315 km2(122 sq mi)	(21,911)
Lam Nam Kra Buri National Park	160 km2(62 sq mi)	(34,135)

Wildlife sanctuaries

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There are four wildlife sanctuaries, along with three other wildlife sanctuaries, make up region 4 (Surat Thani) of Thailand's protected areas.

Khlong Nakha Wildlife Sanctuary	530 km2(200 sq mi)
Khuan Mae Yai Mon Wildlife Sanctuary	464 km2(179 sq mi)
Thung Raya–Na Sak Wildlife Sanctuary	338 km2(131 sq mi)
Prince Chumphon South Park Wildlife Sanctuary	315 km2(122 sq mi)

Gesneriaceae

Notable Gesneriaceae species found in Ranong province include Kaisupeea larsenii and Somrania albiflora, both rare and endemic plants native to the area's damp, shaded ecosystems. 

Noteworthy Species

Kaisupeea larsenii (Mani Krailat) มณีไกรลาส
• Discovered and published officially in 2025 in the Thai Journal of Botany, though first collected in 1984.
• Grows near streams in low-altitude evergreen rainforests at around 150 meters elevation.
• Exhibits blooming periods from August through September. 
Somrania albiflora (Khao Phrommachan)



• Described in 2012 by botanists from new genera collections.
• Small herbaceous plant reaching up to 20 cm with hairy stems and white bell-shaped flowers.
• Inhabits limestone cliff faces specifically inside Ngao Waterfall National Park. 
Aeschynanthus fecundus ไก่กุ่น
• Recorded in low-altitude evergreen forests in southern Thailand and Peninsular Malaysia. 

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Central government

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Map with five districts

Ranong is divided into five districts (amphoe). These are further divided into 30 subdistricts (tambon) and 178 villages (muban).^[16]

No.	District	Thai	Malay	Pop.	subdistricts	Villages
1.	Mueang Ranong	เมืองระนอง	Bandar Raya Rundung	93,271	9	38
2.	La-un	ละอุ่น	Pak Un	15,240	7	30
3.	Kapoe	กะเปอร์	Kapur	22,093	5	34
4.	Kra Buri	กระบุรี	Segenting Kera	48,163	7	61
5.	Suk Samran	สุขสำราญ	-	14,594	2	15
		-	Total	193,371	30	178