Arum
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Arum is a genus of flowering plants in the family Araceae, native to Europe, northern Africa, and western and central Asia, with the highest species diversity in the Mediterranean region. Frequently called arum lilies, they are not closely related to the true lilies Lilium. Plants in closely related Zantedeschia are also called "arum lilies".
A type of Arum plant in a park in Paris
Historical model of the inner part of the inflorescence, the spadix with the flowers and ring of small hairs. Botanical Museum Greifswald.
Arums in a forest at Vidova gora mountain, island of Brač, Croatia
Bract
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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. Typically, they also look different from the parts of the flower, such as the petals or sepals. A plant having bracts is referred to as bracteate or bracteolate, while one that lacks them is referred to as ebracteate or ebracteolate.
Bright yellow bracts of Castilleja levisecta are more tightly pressed against the stem than bracts of other Castilleja species.
Bracts of Bougainvillea glabra, differ in colour from the non-bract leaves, and attract pollinators.
Bracts along a banana flower stalk surround the rows of flowers