White Alder (Turnera subulata)

An introduced ornamental herb native to tropical America. Cultivated in gardens. Also escaped and naturalized along roadsides. 

Twelve o’clock flower (Turnera ulmifolia)

Native plant of West Indies. Introduced and naturalized along roadsides and waste lands of low country and also cultivated in home gardens as an ornamental plant. Flowers open at about 8.00 o’clock and close before noon. Hence the vernacular name. Flowering occurs all the year round.