SUBGENUS: passiflora
SUPERSECTION: stipulata
SECTION: kermesinae
SERIES:
GEOGRAPHICAL DISTRIBUTION OR ORIGIN:
Central and Southern Brazil.
MINIMUM TEMPERATURE: 8 °C
IDEAL MINIMUM TEMPERATURE: 12 °C
ETYMOLOGY: Dedicated to the English botanist Willian Watson (1858 - 1925).
He worked as a gardener at Kew Garden.