flowers, buds and faded ovary of a cactus rebutia deminuta, old name of aylostera deminuta, close-up, on black background

abloom america areola aylostera biology blooming botanical bud cactus closeup colourful complete cultivation detail elegance faded flaming flowering flowers gardening good grow growth horticulture improvement increase isolated macro nectar ovary pestle photography pollen pollination progress pubescence rebutia rich south spike spiny stamen stamens succulent thorn tiny