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The six-petal rosette is common in 17th to 20th century folk art throughout Europe. In Portugal , it is common to find it in medieval churches and cathedrals, as the engraved signature of a mason; but also as decoration and symbol of protection on the chimneys of old houses in Alentejo (at times together with the lauburu , or with the pentagram ).
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 inception and further development of petals show a great variety of patterns. [7] Petals of different species of plants vary greatly in colour or colour pattern, both in visible light and in ultraviolet. Such patterns often function as guides to pollinators and are variously known as nectar guides, pollen guides, and floral guides.
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.
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone , or in formal botanical usage a strobilus , pl. : strobili , is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads .
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 ...
Satyrium carneum.Ground orchid with typical zygomorphic floral anatomy. Zygomorphic ("yoke shaped", "bilateral" – from the Greek ζυγόν, zygon, yoke, and μορφή, morphe, shape) flowers can be divided by only a single plane into two mirror-image halves, much like a yoke or a person's face.
The barbed quatrefoil is a quatrefoil pierced at the angles by the points of an inscribed square, [11] which gives an image akin to a heraldic rose, which is termed "barbed" due to the stylised thorns which project at the intersection of each pair of petals.