F. coccinea Tube color : red to dark pink Sepal color : red to dark pink Corolla color : violet Flower : single Habitus : upright Parentage : X
F. cochabambana Tube color : orange red to bright crimson Sepal color : orange red to bright crimson Corolla color : red, often drying purplish Flower : Habitus : Parentage : X
F. confertifolia Tube color : red Sepal color : red Corolla color : red Flower : Habitus : Parentage : X
F. coriacifolia Tube color : orange Sepal color : orange Corolla color : orange Flower : single Habitus : upright Parentage : X
F. corollata Tube color : paler subnitid red pink to scarlet, often greenish towards tips Sepal color : subnitid red pink to scarlet Corolla color : scarlet Flower : single Habitus : upright Parentage : X
F. corymbiflora Tube color : pale pink to bright scarlet Sepal color : pale pink to bright scarlet Corolla color : darker than sepals, red Flower : single Habitus : upright Parentage : X
F. crassistipula Tube color : subnitid scarlet pink Sepal color : subnitid scarlet pink becoming dull purple towards the tip Corolla color : deep red Flower : single Habitus : upright Parentage : X
F. cuatrecasasii Tube color : nitid red to orange red Sepal color : nitid red to orange red Corolla color : orange red Flower : Habitus : Parentage : X
F. cyrtandroides Tube color : green with dark purple streaks in bud and at anthesis, changing abruptly to dark crimson-purple before dehiscing Sepal color : green with dark purple streaks in bud and at anthesis, changing abruptly to dark crimson-purple before dehiscing Corolla color : red Flower : single Habitus : upright Parentage : X
F. decidua Tube color : reddish pink Sepal color : reddish pink Corolla color : red Flower : single Habitus : upright Parentage : X