Senna alata (L.) Roxb.

Angiosperms
Order: Fabales
Family: Fabaceae (Leguminosae)
Subfamily: Caesalpinioideae
Genus: Senna

Common names: Emperor's candlesticks, Candle bush, Candelabra bush, Christmas candles, Empress candle plant, Ringworm shrub
Thai names: ชุมเห็ดเทศ
Chinese names: 翅荚决明 chi jia jue ming
Distribution: Native to tropical America, widely introduced in the tropics elsewhere.
Image locations: Pa Hin Ngam National Park Chaiyaphum, Chiang Mai.
Map info: Provinces are highlighted according to phytogeographical areas as used in the Flora of Thailand project.
Additional notes: S. alata is sometimes known by the Synonym Cassia alata.

Images of Senna alata from Thailand.

Senna alata Pa Hin Ngam N.p. Chaiyaphum November

Senna alata, Chom Thong Chiang Mai, November 2016

Senna alata, Chom Thong Chiang Mai, November 2016

Senna alata, Chom Thong Chiang Mai, November 2016

References:
The Plant List
BGO Plant Database, The Botanical Garden Organization
Flora of China
Wikipedia