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The flowers are bell-shaped, white, pale pink or red, sometimes tinged greenish. The fruit is a berry 5–16 mm (3 ⁄ 16 – 5 ⁄ 8 in) in diameter with a flared crown at the end; they are pale greenish at first, then reddish-purple, and finally uniformly blue when ripe. [5]
Pollia condensata, sometimes called the marble berry, [2] [3] [4] is a perennial herbaceous plant with stoloniferous stems and hard, dry, shiny, round, metallic blue fruit. It is found in forested regions of Africa. [5] The blue colour of the fruit, created by structural coloration, is the most intense of any known biological material.
Caulophyllum thalictroides, the blue cohosh, is a species of flowering plant in the Berberidaceae (barberry) family. It is a medium-tall perennial with blue berry-like fruits and bluish-green foliage. The common name cohosh is probably from an Algonquian word meaning "rough".
Rubus chamaemorus is a species of flowering plant in the rose family.English common names include cloudberry, [2] Nordic berry, bakeapple (in Newfoundland and Labrador), knotberry and knoutberry (in England), aqpik or low-bush salmonberry (in Alaska – not to be confused with salmonberry, Rubus spectabilis), [3] and averin or evron (in Scotland).
The flowers are most commonly an intense blue colour and arranged in flowerheads (capitula) of 1.5–3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red. [5] Fruits are approx. 3.5 mm long with 2–3 mm-long pappus bristles. [6]
The large seeds are covered with a characteristic blue coat, and the fruits remain on the plants until fall. Seed germination can take a few years, and the seedlings are hypogeal, with the cotyledons remaining underground after germination and seedling emergence. The seedlings need a few years of growth before they are large enough to flower.
The leaves are up to 6 centimeters (2.4 inches) long by 3 cm (1.2 inches) wide. They are hairy and glandular. The inflorescence contains 1 to 4 flowers that hang on pedicels up to 2 centimeters (0.8 inch) long. The flower is bell-shaped and greenish white. The fruit is a juicy, sweet-tasting drupe which is usually blue but may be black or white ...
Ipomoea indica [3] is a species of flowering plant in the family Convolvulaceae, known by several common names, including blue morning glory, oceanblue morning glory, koali awa, and blue dawn flower. It bears heart-shaped or three-lobed leaves and purple or blue funnel-shaped flowers 6–8 cm (2–3 in) in diameter, from spring to autumn .