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A petal fold starts with two connected flaps, each of which has at least two layers. (For example, two flaps of a preliminary base). The two flaps are attached to each other along a reference crease. Make two radial folds from the open point, so that the open edges lie along the reference crease. Unfold these two radial folds.
The petals are about 25 mm (0.98 in) long and are joined at their lower end to form a tube. The petal tube and lobes are blue, pink or violet. The outer surface of the petal tube and lobes is hairy, the inner surface of the lobes is glabrous and the inside of the tube is filled with woolly hairs. The 4 stamens are fully enclosed in the petal tube.
open – petals or sepals do not overlap or even touch each other . reduplicate – folded outwards. valvate – margins of adjacent petals or sepals touch each other without overlapping. vexillary – a special type of aestivation occurring in plants like pea; in this type of aestivation a large petal called standard encloses two smaller petals.
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are usually different from foliage leaves; they may be of a different size, color, shape, or texture.
The petals are 18–30 mm (0.7–1 in) long and joined at their lower end to form a tube. The petal tube is lilac-coloured or purple on the outside and white with lilac spots inside. The outside of the petal tube and the lobes are hairy but the inside surface of the lobes is glabrous and the inside of the tube is filled with woolly hairs.
Like all members of the sunflower family, the flowering structure is a composite inflorescence, with rose-colored (rarely yellow or white) florets arranged in a prominent, somewhat cone-shaped head – "cone-shaped" because the petals of the outer ray florets tend to point downward (are reflexed) once the flower head opens, thus forming a cone ...
The outside of the tube and the petal lobes are almost glabrous but the inside of the tube is filled with woolly hairs. The petal lobes are rounded but have a small point in their centres. The 4 stamens are fully enclosed within the tube. The fruits are oval to cone-shaped, 7–9.5 mm (0.3–0.4 in) long and are woody with a papery covering. [2]
The petal tube is pale to deep lilac-coloured or deep purple, sometimes mauve, purple violet or white on the outside, while the inside of the tube is white, spotted with purple. The outside of the petal lobes and most of the tube are hairy, the inside of the lobes is glabrous and the inside of the tube is filled densely woolly. The 4 stamens ...