'Brunfelsia pauciflora' is a species of flowering plant in the family 'Solanaceae', the nightshades. It is endemic to Brazil, and it is grown in cultivation. A shrubby perennial plant grown in gardens, its common names include' yesterday-today-and-tomorrow', 'morning-noon-and-night', 'kiss me quick', and 'Brazil raintree'.

Cultivars bred for ornamental use include the common 'Eximia', the smaller, more floriferous 'Floribunda', and 'Macrantha', which has larger flowers without white throats. This plant has gained the Royal Horticultural Society's Award of Garden Merit.

It occurs mainly on the Atlantic facing slopes of the Serra do Mar in southeastern Brazil. The distribution areas are located in the state of Rio de Janeiro to Santa Catarina, where they range from sea level to altitudes of 1500 m. Most are found in pluvial rainforests with an annual rainfall of up to 1600 mm. One finds plants of the kind on shady river banks and ravines, as well as in forests in damp, well draining soils.

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