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Aquilegia coerulea is a herbaceous plant with flowering stems that may be 15–80 centimeters (6–31 in) when fully grown. [3] Its leaves are on stems that are always shorter than the flowering stems, just 9–37 cm (4–15 in) and are compound leaves that usually have three leaflets on three components (), but occasionally may be simpler with just three leaflets or more complex (). [4]
The male flowers have 9 to 15 fertile stamens; the innermost circle of stamens can be found at the base of the stamen glands. Usually the stamens are longer than the anthers, which in turn consist of two chambers and are directed inwards or sideways. The vestigial ovary is negligible or absent. The base of the flower is small and flat.
The flowers are unisexual, with the two kinds borne on separate plants (i.e. the species are dioecious). The staminate ("male") flowers are arranged in short panicles. Each flower basically consists only of two stamens. [3] The carpellate ("female") flowers are arranged in thyrses (spike-like structures).
The species is a bushy shrub that can grow up to 1.5 meters tall, is many-stemmed, and has golden yellow flowers with conspicuous stamens. The plant has been well-documented in botanical literature, with mentions dating back to at least 1627.
In some species, however, the flowers are unisexual with only carpels or stamens. (monoecious = both types of flowers found on the same plant; dioecious = the two types of flower found only on different plants). A flower with only stamens is called androecious. A flower with only carpels is called gynoecious. A pistil consists of one or more ...
It has pink flower buds, [4] that open up to brilliant blue or bright blue flowers with a white centre, approximately 10 mm (0.4 in) wide. There are 5 sepals. It has clusters of flowers, but only one flowering at a time. Its stamens are hidden inside narrow flower-tubes which end in a white eye in the centre of a blue flower. [5]
Flowers have five bluish-white petals. They exhibit a white and purple corona, a structure of fine appendages between the petals and stamens. The large flower is typically arranged in a ring above the petals and sepals. They are pollinated by insects such as bumblebees and carpenter bees, and are self-sterile. The flower normally begins to ...
The buds take many months to develop and the flower lasts for just a few days. The flowers are dioecious – either male or female, thus both flowers are needed for successful pollination. [22] When Rafflesia is ready to reproduce, a tiny bud forms outside the root or stem of its host and develops over a period of a year. The cabbage-like head ...