Hoya siamica
Encyclopedia
Hoya siamica is a slender vine found in 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...

 with long light green leaves. The leaves are on average 1.5-2 cm wide by 4-10 cm long. It has white flowers that come in clusters of 10 to 15. The corolla of the flowers are white and flat; the corona can be a deep purple or a very pale yellow depending on how much light the plant receives. The flowers are approximately 1.5 cm in diameter, fuzzy, have a slight scent, and last about a week when they flower during the summer.

Hoya siamica was first found by Arthur Francis George Kerr
Arthur Francis George Kerr
Arthur Francis George Kerr was an Irish medical doctor. He is known particularly now for his botanical work, which was important for the study of the flora of Thailand....

 and published by W. G. Craib in 1911 in the Kew Bulletin. Kerr discovered the plant in the jungle on the mountain Doi Suthep
Doi Suthep
Doi Suthep , is a mountain located in Chiang Mai Province, Thailand.-Description: Doi Suthep is one of the twin peaks of a granite mountain located west of Chiang Mai, the other peak is known as Doi Pui and is slightly taller .Doi Suthep is located 15 km away from Chiang Mai city centre.Most...

 which is near the city Chiang Mai
Chiang Mai
Chiang Mai sometimes written as "Chiengmai" or "Chiangmai", is the largest and most culturally significant city in northern Thailand. It is the capital of Chiang Mai Province , a former capital of the Kingdom of Lanna and was the tributary Kingdom of Chiang Mai from 1774 until 1939. It is...

, at an altitude of around 1500-1650 meters above sea level. The plant derives its name from Siam, the former name of 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...

. It was later also discovered in Gaoligongshan
Gaoligong Mountains
The Gaoligong Mountains are a mountainous area at the southern end of the Hengduan Mountain Range, located in the western Yunnan highlands very near to the China and Myanmar border. It is located along the west bank of the Nujiang valley from Gongshan down in to Dehong Prefecture, a distance of...

, Yunnan Province
Yunnan
Yunnan is a province of the People's Republic of China, located in the far southwest of the country spanning approximately and with a population of 45.7 million . The capital of the province is Kunming. The province borders Burma, Laos, and Vietnam.Yunnan is situated in a mountainous area, with...

in China. Hoya siamica is related to Hoya longifolia.
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